JP2009048506A - Radio communication medium buried in periodontium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To safely and surely install a radio communication medium in a living body as a personal identification means based on biological information. <P>SOLUTION: A flexible and thin film-like radio communication medium is formed by an antenna obtained by forming a foil-like conductive material having biocompatibility in a loop and a communication medium buried by a material having biocompatibility, and the radio communication medium is buried in the periodontium in a surgical operation process of intraoral mucous tissue. Consequently, the radio communication medium can be installed in the living body while avoiding damage on the surface of a body in order to subcutaneously bury the communication medium as in the case of the conventional method. A communication terminal which can be wirelessly connected to the radio communication medium installed in the periodontium as a personal identification means is prepared and the mobile communication terminal having a reader/writer function stores various information such as electronic information for identification in the radio communication medium and to control the input/output of the stored information. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wireless communication medium embedded in a human body.

  Today, when money and merchandise are traded in large quantities, fraud crimes by impersonating others using counterfeit credit cards are causing social unrest. As a countermeasure, recently, an attempt has been made to counter the above-mentioned credit fraud by adopting a card using an IC chip, which is said to be difficult to counterfeit, instead of a magnetic card used in a conventional credit card. However, these credits are also based on the premise that individuals will be able to handle the system correctly, and no matter how elaborate and difficult to forge a credit card, it is assumed that someone else has it. As long as it is possible, there is no guarantee that the person who owns it is the person. Therefore, no matter how strictly security checks using authentication means such as smart cards are applied and carefully implemented, it will not be the deciding factor to eliminate 100% of credit crimes. Therefore, it is no exaggeration to say that the most important theme in today's economic transactions is the identification of the parties. For this reason, recently, identification methods based on biometric information such as fingerprints, retinas, facial features, voiceprints, irises, DNA, etc. have been developed and are spreading in the industry that emphasizes security.

Voices seeking security are not limited to personal property protection, but traceability using contactless IC tags is applied, and contactless wireless IC tags are embedded in the body to protect children and young people from crimes such as kidnapping. Therefore, development of a system for issuing an alarm in an emergency is progressing. An attempt to identify individuals by replacing authentication means such as Dog Tag used for solid identification with electronic communication media and embedding them in the body started in the 1990s, and Applied Digital Solutions in the United States, established in 1993, In December 2001, patients with a disease that could be suddenly afflicted with human resources such as diabetes due to non-contact IC tags (VeriChip ^TM ) initially embedded in livestock and used for electronic solid identification An attempt was made to implant it in the body for the purpose of medical management. By embedding an IC chip that stores the patient's medical information in the arm, the medical institution can quickly and reliably grasp information necessary in an emergency such as medical history, medication, blood type, family contact information, etc. Is. A technique has been proposed in which such an in-vivo electronic communication medium is used as an authentication means to perform identity verification, prevent impersonation of others and prevent crimes such as credit fraud.

  In addition, as means for storing the above-described biological information in the body, “biological information measurement / recording and communication device using dental structure” and information on this device shown in Patent Document 1 previously filed by the applicant of the present application. There is an invention of “information control method for input / output control”. This invention uses a dental structure applied to a deactivated tooth or an artificial root implant instead of a missing tooth to provide patient biological information without adversely affecting the living body by installing an electronic measuring device in the body. The purpose of this is to monitor, and for this purpose, the function to measure biological information inside the dental structure installed in the living body according to the process of dental surgery, the measurement result and this measurement result There is provided a biological information measuring / recording and communication device having a recording function for storing various types of information attached thereto and a communication function for transmitting the stored contents to the outside. Furthermore, information terminal means connectable to the biological information measurement / recording and communication device from outside by wireless communication is provided, and necessary information input and recording to the biological information measurement / recording and communication device is performed by a control signal from the information terminal means. The communication function is controlled so as to output the information stored by the function.

Japanese Patent Application No. 2001-176888

  The following are examples of problems to be solved by the invention. While the use of wireless communication media (contactless IC tags) in the body has been supported by many people for use in medical purposes related to people's life preservation, it can be used as a means of identity verification in commercial purposes. There are many voices that hesitate from humanitarian and ethical concerns. There will probably never be any attempt to embed these authentication means injure your body just because you want to be confident.

  However, when it comes to identity verification means based on biometric information, which is currently spreading as the ultimate identity verification means, that is, biometrics, there is still room for doubt about its usefulness. This is because the biometric information itself, which is the basis for authentication, does not include information such as the person's name and address, and can only be used as a means for confirming the person. In Japan, an IC chip with an iris pattern recorded in the passport is already provided, and the method used for verification at the time of immigration is a test, but this method has been implemented in 2003. While it contributes to improving the accuracy of confirmation, it does not improve the convenience of the user at all, although new labor and cost are required for the application of the IC chip to the passport and the biometric authentication procedure. For example, quick gate control such as touch-and-go using a wireless IC card at a railway ticket gate, represented by JR East's “SUICA”, cannot be realized.

  Next, biological data includes information closely related to personal health and privacy. And the biggest concern when using such personal biometric information for identity verification is that personal information is being collected more than ever in various industries in society. If an individual provides such biometric information to a third party as an authentication means, even if he tries to delete the biometric information, the person who provided the information no longer has a fundamental erasure means. is there. Especially for the general public, it is afraid that biometric data stored in private companies will be associated with information stored in police and other investigation agencies, whether or not I don't get it. In the unlikely event that such a situation occurs, it is absolutely impossible to change an individual's retina, fingerprint, or even DNA pattern, so there is a risk that it will be engulfed by the social disadvantages and persecution associated with biometric authentication. I can't wipe it off. In addition, these biometric information is considered to have a similar pattern even in the registered relative of the person concerned, so that the biometric information in the hands of a third party also affects relatives other than the person concerned. is expected. The advantage of authentication by biometric information that does not change semipermanently can be said to be a drawback that can be a great threat to individuals if it is reversed.

  Compared to such concerns, the above-described identity verification method by embedding a communication medium that is the basis for authentication in the human body is authenticated by externally inactivating the electronic communication medium or, at worst, by removing the communication medium by surgery. It is possible to fundamentally eliminate the means, and it can be seen as advantageous from the viewpoint of respecting the privacy of individuals. As long as the pain of a moment is acceptable, it becomes possible for a public third party to guarantee the identity of the person, and when embarking on the significance of becoming a great base for establishing social safety, embedding communication means in the living body For security measures based on it, one of the options is to secure room for discussion among people.

  In fact, when embedding an electronic communication medium in a living body for a human being, a method of placing an IC chip encapsulated in a material that has little harmful effect on the living body, such as biological glass, has been put into practical use. Yes. Although placing an authentication means chip (authenticator) in a living body must be extremely effective for the purpose of establishing social safety, in fact, an information device such as an IC chip is placed in the living body. Implantation is only used in part for medical needs. For example, a patient with severe diabetes or cardiovascular disease has a fear of sudden loss of personnel regardless of time and place, but in such a case, the patient can no longer report or explain the medical condition. It becomes a state. However, by taking the above measures in advance, even if the patient is in an unconscious state, medical information about the medical condition can be obtained quickly and reliably from the information medium existing in the body, and the best for the patient. Treatment can be given.

  However, in any case that contributes to maintaining the life of an individual, everyone will be hesitant to take a foreign substance into the body for the sole purpose of authenticating the person. In the conventional living body embedding technique, it is unavoidable to hurt the living body, although it is slight, and pain must be accepted even though it is temporary. Since IC chips embedded in the body are only foreign substances to the living body, as long as they are in the living body, antigen-antibody reactions, inflammation reactions, infections, and heavy metals elute from the embedded chip due to aging. You can't completely dispel any concerns.

  Furthermore, when these authentication means are used as identity verification means, it is actually necessary to embed them deep inside the body so that they cannot be easily taken out from the living body. Because the current IC chip implantation site is basically subcutaneous, anyone can easily remove it with a small amount of anesthetic injection and blade, and can be transplanted to others That's why. In other words, as long as someone other than the IC chip owner can divert the IC chip, this method cannot prevent impersonation of others, so it is not decisive for identity verification. Therefore, even if the IC chip is embedded deeply in the body, this time, the shielding by the living tissue is strengthened between the IC chip and the communication device, and the communication distance also increases, so reading / writing becomes difficult. That said, for example, even if read / write is enabled using stronger radio waves, the radio waves spread over a wide area, which may hinder the prevention of information leakage, which is a serious security issue. Concerns arise. For example, there is a high possibility that personal information will be stolen by intercepting communication to the IC chip from the surroundings without knowing it.

  IC chip memory devices, etc., are vulnerable to ionizing radiation such as X-rays that are exposed in medical practice and may cause malfunction. At that time, if the IC chip is taken out, it is expected that the extraction operation will be extremely difficult if it is buried deep in the human body. In this way, trying to embed a communication medium such as an IC chip directly in the human body is not very profitable for the risk involved.

  Also, in the situation where the IC chip must be removed from the body, there is no method other than incising and removing the skin from the body surface, no matter where the chip is stored. In that case, it is inevitable that the incision remains after the removal, which may result in aesthetic sequelae. Furthermore, since most of the external shape of the conventional implantable IC chip is a glass-like capsule body, it may move from the initially embedded position after being embedded in the living tissue. In this case, if it moves deep into the tissue, it can be a disruption to communication functions, and if contact or pressure on nerves or blood vessels occurs, it can directly affect the tissue due to neurological or circulatory disorders. May cause negative effects.

  Therefore, as shown in Japanese Patent Application No. 2001-176888 filed earlier, the present inventor incorporates a minute electronic communication medium such as a wireless IC tag into an artificial material called a dental crown structure used for restoration of human teeth. With this technique, we have developed a technique that allows these subjects to be firmly integrated with the living body without causing any discomfort or pain to the subject and cannot be easily extracted. In this method, since the IC chip is attached to a tooth, unlike a conventional biochip, it can be implanted non-invasively, and an electronic communication medium such as an IC chip is completely isolated from living tissues in the living body, Since it does not touch the living body directly, it is characterized by high safety. In addition, because it is fixed inside a strong artificial tooth that can withstand occlusal force, it does not move from the place where it is installed, and it is difficult to remove the IC chip intact compared to transplanting subcutaneously. Highly effective in preventing unauthorized use and impersonation of others. In addition, when the reader communicates with the IC chip, the communication distance approaches 10 cm or less, so it is possible to suppress the radio wave output emitted from the reader, and interception by malicious third parties and scanning against the will. It is easy to prevent and sufficient security can be secured. It can be removed by a dental method as necessary, and can be removed or replaced under the equipment of the dental clinic according to the customer's request in the case of failure or when it is desired to cancel personal authentication.

  Even if an IC chip is attached, the appearance is exactly the same as a conventional dental treatment, and the attachment can be kept secret. There is no pain or incongruity for the wearer, and there is no change in the process of regular dental treatment. In other words, this method has the advantage that information devices such as wireless IC tags can be integrated with the human body much more easily than before without causing pain and burden to the subject in the process of realizing indwelling of the authentication means. Moreover, it meets all the requirements for effective use of this as a decisive factor for identity verification.

  However, the application of such a method is limited to the case where the tooth is greatly collapsed by caries or the like to the extent that an artificial tooth must be used. In dental treatment, even if a substantial defect occurs in a tooth due to a disease such as caries, not all cases are subject to relatively extensive dental restoration with a crown structure and a full crown. Recently, in particular, a policy to preserve and restore the original tooth as much as possible has become established, and even if the nerve of the tooth is removed due to a disease such as caries, the tooth There are cases where it is preserved as much as possible and is repaired using a dental filler, and a dental structure or the like is not necessarily used. Furthermore, it is out of the question that wireless IC tags are attached to healthy teeth of people who have no disease such as caries.

  In addition, since this method places an electronic communication medium on the teeth, the physical stress that the teeth receive on a daily basis, that is, due to a considerable amount of compression or tension accompanying the occlusion, external forces such as shear stress, as well as food and beverages Since it may be affected by a sudden temperature change, it is necessary to ensure sufficient durability for long-term use. If the media embedded in the teeth is upset due to physical stress, it can be replaced by a dental procedure, but the user will have a wireless IC tag installed in the oral cavity. Opportunities to pay for the trouble and expense of replacing it because of a failure should be avoided, and at least such a situation can never be avoided.

  The usefulness of storing electronic communication media such as wireless IC tags on human teeth and using them socially is as described above, but on the other hand, when actually installing wireless IC tags on human teeth The above various concerns are assumed, and sufficient measures are required to cope with the disadvantages. Therefore, if the significance of attaching the wireless IC tag to the teeth, that is, the essential merit is that it can be linked with the wireless communication medium existing in the body in addition to the above-mentioned fixed telephone or mobile phone call, wireless communication If the condition that the medium can be placed safely is satisfied, the installation position may be other than the tooth itself, and it may be any place in the tissue around the oral cavity that can be accessed with the mobile phone during a call, for example.

  However, as mentioned above, finding a place to install in the oral cavity considering only the purpose of installing such a wireless IC tag in the body hurts the originally healthy tissue only for embedding the wireless IC tag. Could lead to Therefore, it is necessary to carefully consider such means when installing a wireless communication medium in the oral cavity other than during dental treatment because such inhumane actions must be strictly avoided.

  In order to widely spread the merit of using an implantable electronic communication medium to the people, when the installation of the electronic communication medium is not limited to the teeth and the surrounding tissue is targeted, the above-mentioned teeth are used as the installation location. As in the invention shown in Japanese Patent Application No. 2001-176888, it is necessary to take such measures in conjunction with the treatment of diseases of the teeth, so as not to touch a healthy tissue. To that end, instead of simply considering expanding the area where the wireless IC tag is to be installed to other than the tooth, the case where the wireless IC tag can be installed, that is, the case where the wireless IC tag can be installed, is a disease of the tooth itself such as caries. In addition, when a device was devised to expand the range of cases in which the wireless IC tag can be taken in comfortably during the treatment method, the wireless IC tag is not inserted into the oral cavity other than the tooth for the first time. There is room for debate as a place of installation.

  In other words, until now, the target for storing electronic communication media such as wireless IC tags has been limited to teeth, but for people who have no dental illness such as dental caries, the storage range is limited to the tissues surrounding the teeth. As a condition that extends to other areas, there is a need for a method of installing a wireless IC tag without difficulty even when treating diseases of tissues around the oral cavity. At that time, in order to maximize the life of the electronic communication medium to be installed, consideration should be given to the installation site to be a place or environment where physical stress to the wireless IC tag is minimized. I will. Of course, it would be desirable to install an information device such as a wireless IC tag in the oral cavity by a method that conforms to the dental treatment method. If it is possible to safely place an information device such as a wireless IC tag in the oral cavity in some way even for people who have relatively mild dental illness or no illness, I think that the possibility that many people who want social safety can understand that even an electronic communication medium such as a wireless IC tag can be accepted in the body is expanded.

As a method for this, it is considered that a site adjacent to the tooth in the oral cavity, that is, the surrounding soft tissue is set as a site for installing the wireless IC tag. For example, if it is placed in soft tissue, it is the type that is installed in the subcutaneous tissue that has already been put into practical use when painless treatment is performed by anesthesia to the gingiva performed in the periodontal disease. A method for embedding non-contact IC tags that can be implanted in a living body, such as VeriChip ^TM, into the gums will be recalled. In other words, this is a technique in which a capsule-type wireless communication medium covered with biological glass that is compatible with ecological tissue is placed under the gingiva or oral mucosa.

  However, as described above, as a risk factor associated with embedding the current capsule-shaped wireless communication medium in the tissue, there is a great concern that the embedded wireless communication medium may move in the tissue in soft tissue. Become. In other words, even if the capsule-like wireless communication medium is initially embedded in a predetermined safe tissue in the oral cavity, if it moves within the tissue, especially in the tissue around the oral cavity in the head, the capsule moves to the head. It may cause contact and compression on the complex neural networks of motor nerves such as the sensitive sensory nerves derived from the controlling trigeminal nerve and the facial nerves that control the mastication and pronunciation functions of the oral cavity, as well as the jawbone and surrounding blood vessels . In that case, it is expected to cause sensory disorders such as pain and paralysis, or movement disorders to the head muscles.

  Furthermore, when it is installed in the oral tissue, it will be installed under the mucous membrane, but the tissue under the oral mucosa has high mobility and elasticity, so it is sparse and has more voids than the subcutaneous tissue, It is known that the space in the tissue continues to the cervix, and in particular, the mucosal tissue lesions of the mandibular molar region often inflame the pharynx and mediastinum through this pathway. Therefore, when a small solid matter is embedded in the tissue around the oral cavity, it may move in the cervical direction, thereby causing extremely serious tissue damage due to foreign substances.

  In addition, if the above conditions are cleared and the wireless IC tag can actually be installed in the oral cavity, and it is used as a personal authentication means, the wireless IC tag is used from the viewpoint of privacy protection and security. It is desirable not to expose the certification process based on In recent years, some major city banks have started identity verification services using biometrics that perform identity verification by scanning palm vein patterns at ATMs. However, it is pointed out that this authentication method may induce new crimes targeting customers who use ATM services based on this biometrics because it is possible for others to see the process. Yes. Because, in March 2005, in the suburbs of Kuala Lumpur, Malaysia, Mercedes adopted a so-called fingerprint authentication key system that would not work unless the owner's index finger was applied to the security panel and verified as a security device. When a Mercedes-Benz car is stolen, an unprecedented brutal crime has happened in which the index finger of the male accountant who is the owner is cut off for the purpose of operating the key system. Therefore, when the wireless IC tag in the oral cavity is used for personal approval, the same concern arises if communication with the wireless IC tag is scattered by others. That is, when using a wireless communication medium in the oral cavity, it is desirable not to expose the communication scan to the outside.

  In the first place, when a wireless IC tag or the like is worn in the oral cavity, the reader must be brought close to the face when using it, and such an operation should clearly cause discomfort to the wearer. . In addition, even if the wireless communication medium in the oral cavity is apparently hidden, it is expected that there is a wireless communication medium in the oral cavity for an unspecified number of people, aiming for the information there, It is also expected that seniors who attempt unauthorized access and skimming by wireless will appear. Some wireless IC tags including RFID currently have a security function, but from the viewpoint of ensuring sufficient security performance for the wireless communication medium installed in the oral cavity, an unauthorized access from the outside is detected and an alarm is issued. A system will also be required. Even if the wireless communication medium can be safely placed in the oral cavity in this way, it must be less practical unless various measures are taken to eliminate security and emotional concerns. I don't get it.

  In order to solve the problems raised in the above-mentioned problems, the present invention provides a method for safely placing a wireless communication medium such as a wireless IC tag in a living tissue in a tissue around the oral cavity, and using this securely and effectively. For the purpose of establishment, it is applied to periodontal tissue regeneration techniques that have become popular in recent years, and has biocompatibility such as titanium metal and polytetrafluoroethylene (PTFE) on a membrane for the purpose of securing alveolar bone regeneration space. A wireless IC tag (RFID) embedded in a material and an antenna formed by pattern wiring using a wire material such as titanium or conductive plastic that has biocompatibility. Establish a wireless communication medium that functions as an IC tag.

  When performing surgical treatment on periodontal tissue as a treatment method for gingivitis and periodontal disease widely used in dentistry, the alveolar bone exposed when the gingiva or alveolar mucosa is incised and inverted, or Affix to the alveolar periosteum and fix. Next, the attached book membrane-like wireless communication medium is covered with an incised gingiva or alveolar mucosa and embedded under periodontal tissue. Alternatively, it is also possible to use a material excellent in biocompatibility used for a dental artificial tooth root or an implant body functioning as a substitute for a lost tooth.

  This is different from the above-mentioned book-like form, and the dental alveolar root or implant body encapsulating the wireless IC tag itself is exposed to the exposed alveoli by surgical treatment of the periodontal tissue according to implant implantation. This is a screw-type wireless communication medium of a type in which a hole is formed in a bone, inserted and fixed, then covered with an incised gingiva or alveolar mucosa and embedded under periodontal tissue. In this way, even in cases where there is no caries, etc., people who have not had the opportunity to store wireless communication media such as wireless IC tags in the gingiva using the method introduced above are also used for periodontal disease. Capturing an opportunity for treatment and giving the option of storing electronic communication media and the like safely in the oral cavity for a long period of time.

  The wireless communication medium embedded in the periodontal tissue of the present invention is decisively different from the conventional in vivo embedded wireless IC tag that is simply embedded subcutaneously in that it is fixed in the alveolar bone surface layer or alveolar bone, As an advantage, there is no possibility that the installed wireless IC tag will move or drift inside the living body outside a predetermined location. In addition, periodontal tissue does not receive external force due to occlusal force against soft tissue parts such as gingiva, and there is a possibility that a large external force is transmitted to the wireless IC tag compared to the case where it is placed in the tooth. Therefore, physical durability is not required and the lifetime is semi-permanent as compared with the implantable wireless IC tag.

  It is said that more than 80% of adults have periodontal disease in Japan, and most adults have the opportunity to receive treatment for periodontal disease. Many require surgical procedures with gingival incision and detachment. Therefore, in the present invention, this method can be applied as a dental treatment option for the purpose of disease treatment only, rather than hurting the body for the purpose of embedding the electronic communication medium under the skin as in the conventional method. In other words, since the wireless communication medium can be taken into the living body following the dental treatment, there is an advantage that many people have an opportunity to take in the wireless communication medium on a daily basis.

  The wireless IC tag of the present invention installed in the periodontal tissue is given an external force that can destroy the structure of the electronic tag, or tissue fluid or the like inside the living body enters the electronic tag and functions as an electronic circuit. It can function semipermanently as long as it does not cause a failure, but it cannot be denied that the electronic tag may malfunction over time due to the cause of the failure. At that time, if the electronic tag of the present invention installed in the periodontal tissue declines or disappears and becomes a mere foreign substance in the living body, it must be removed or replaced. In this case, as in the case where this is installed, after performing local anesthesia around the periodontal tissue of the embedded site, the periodontal mucosa is incised to the required size and the inside of the tissue is opened to remove the electronic tag, or If desired, it can be replaced with a new electronic tag. However, as a result, some surgical marks may occur on the mucous membrane of the surgical site. However, since the mucous membranes in the oral cavity will not be scattered by anyone other than the person in ordinary life, surgical marks remain in the oral cavity compared to the case where the conventional subcutaneously embedded bio-implantable wireless IC tag is removed. Even if you leave, there are still few aesthetic problems.

  And, as long as it is required to propose a reward that fully rewards the customer who dares to take the authentication means into the living body, for example, the identity confirmation means achieved by this technique is an electronic communication Making use of the medium authentication, even in a business environment where a more secure identity verification method is required, while realizing a strict level of identity verification, the actual authentication step is rather simpler and faster than before. A feeling of use can be obtained. The recent deterioration in public security in Japan cannot be overlooked any more, and innovative measures that have never been seen before are necessary to realize a safe society that does not allow the trapping of malicious persons. As one of the practical solutions, in the present invention, a reader intended for a wireless communication medium such as a wireless IC tag stored in a periodontal tissue is provided in a fixed telephone handset or a mobile phone, and the wireless communication medium is provided. When the wearer communicates with the wireless IC tag in the oral cavity at the same time as using these telephones, confirmation can be performed with an action that is completely indistinguishable from ordinary calls. As an example, as a safety measure of a mobile phone having a credit function such as “wallet mobile phone” released recently, for example, a so-called unauthorized authority in which a criminal who steals this uses a credit function to seize money It can be used as a system to prevent transactions.

  If it is an authentication means that uses an authentication body such as a wireless IC tag fixed inside the user's body as the basis for identity verification, it can be widely used in various situations where security is required in society. Using wireless communication media embedded in as an electronic key, security and alarm devices in personal devices such as mobile phones, transportation devices and systems from automobiles to aircraft, and more everyday security As an application, it can be used as a key for entrance doors and entrances as a simple and quick means for users while ensuring strict security capabilities.

  Furthermore, according to the present invention, the wireless communication medium installed in the oral cavity can be protected from unauthorized access that is not desired by the owner. In order to make a wireless IC tag installed in the oral cavity function, a reader is used that conforms to a format for controlling the wireless IC tag and has a function of releasing the security of the wireless IC tag. As a result, if the wireless IC tag installed in the oral cavity as described above is routinely used as an authentication means for identity verification, the convenience is enhanced by incorporating the reader into the mobile phone. Most people who use mobile phones seem to wear it all the time. Therefore, if wireless IC tags have been taken into the body by various methods including the method of the present invention in the oral cavity, the result is that the mobile phone having these reader functions will always be the wearer of the wireless IC tag. Exist in the vicinity of. Needless to say, the reader built in the mobile phone has a function to transmit and receive radio waves that control the wireless IC tag in the owner's body, in other words, it controls the wireless IC tag installed in the oral cavity. That is, it has a function of detecting the radio wave to be tried. That is, a mobile phone or terminal having a built-in reader for carrying out communication with the wireless communication medium in the body, which a wearer of the wireless communication medium embedded in periodontal tissue according to the present invention would normally carry. In particular, it is possible to realize a function of detecting a radio wave intended for unauthorized access from outside and issuing an alarm without adding dedicated monitoring hardware. Thereby, unauthorized access from a malicious person to the wireless communication medium installed in the body can be eliminated, and the security system can be made a meteorite.

  For the purpose of obtaining a highly accurate identity verification means, a method of installing a wireless communication medium in a living body is applied to an antenna formed of a biocompatible conductive material in a loop shape and a biocompatible material. A flexible booklet-shaped wireless communication medium composed of a communication medium such as an IC chip embedded in the periodontal tissue is formed in the process of surgical treatment of the oral mucosal tissue. The wireless communication medium can be safely stored in the living body without damaging the skin, which is easily visible in the body, as in the conventional method of embedding subcutaneously in the alveolar bone. And realized it to function.

FIGS. 1 to 5 show Embodiment 1 of the present invention, FIG. 1 is an overall view of a wireless communication medium (wireless IC tag), and FIGS. 2 to 5 are explanatory diagrams of a method of embedding the wireless communication medium in periodontal tissue. It is.
As shown in FIG. 1, the wireless IC tag 1 is generated by an antenna 2, a chip capacitor 6 and an IC chip 3 electrically connected to both ends of the antenna 2 by lead wires 4 and 5, and a stress applied during meals and conversations. The communication medium 9 includes a piezoelectric element 7 that generates electric power and supplies the electric power generated by the electromotive force to the IC chip 3. The chip capacitor 6 is for determining the resonance frequency of the antenna 2 in accordance with the optimum reception frequency in the wireless IC tag, and the antenna 2 is a foil-like conductive material such as a biocompatible metal or conductive plastic such as titanium. Is formed in a loop shape, and is a book film shape that can withstand a certain degree of bending. In order to stabilize the shape and facilitate handling, the book membrane antenna 2 may be attached to a biodegradable plastic film such as polylactic acid or encapsulated to form a loop. Is possible.

  In addition, the non-contact communication IC chip 3, the chip capacitor 6 and the piezoelectric element 7, which are originally poor in biocompatibility, are each made of titanium or tetrafluoroethylene resin (polytetrafluoroethylene: e-PTFE, biocompatible silicon, hydroxy A non-contact type wireless IC tag can be formed by embedding the surroundings with a material having excellent biocompatibility such as apatite, alumina, sapphire, and biological glass, and then connecting to the antenna unit 2. If a material with poor biocompatibility is used as the conductive material that forms antenna 2, electrical insulation such as tetrafluoroethylene resin (polytetrafluoroethylene: e-PTFE, biocompatible silicon, hydroxyapatite, alumina, etc.) Coated or sealed with a material that is compatible and biocompatible and does not shield wireless communication with external readers May be used. The thus formed wireless IC tag 1 exerts no Tamegai acting on the biological tissue so it is placed in the body tissue with biocompatibility.

The wireless IC tag 1 in FIG. 1 has a rectangular shape with an average size of 10 mm × 20 mm and a maximum of 20 mm × 30 mm, and has a maximum thickness of about 1 mm. The detailed configuration of the wireless IC tag 1 of the present invention uses, for example, a my-d Vicinity SRF55 series (Infineon Technologies Japan) as an integrated circuit (IC chip) for wireless communication IC tag (RFID) for individual recognition. This RFID IC chip having a security function can be used in the wireless communication medium of the present invention with a die size of 1 mm square. The transmitting / receiving antenna unit 2 is configured by an antenna loop made of a thin-film conductive material having biocompatibility and a chip capacitor 6 coated or sealed with the biocompatible material. The RFID wireless IC tag 1 has a communication frequency of 13.56 MHz _Z band, and the antenna unit 2 is optimized in shape and loop length so that transmission / reception of this frequency band is effectively performed. As shown in FIG. 1, in order to satisfy the size of the IC tag, the transmission / reception antenna unit 2 is formed in a rectangular book-like film shape having a length of about 8 mm and a width of about 20 mm.

Antenna unit 2, to accommodate the communication in the communication frequency 13.56MH _Z, are formed in five turns around the rectangular loop at approximately 0.8mm width of the electrical conductor plane pattern lines, 10 pF (pico across the loop circuit by paralleling capacitor stacked on the same plane pattern as chip capacitors 6 or the antenna section 2 has a capacitance of 50pF Faraday), to obtain a resonance for radio signals 13.56MH _Z antenna unit 2 It has been adjusted to be optimal. However, when actually performing communication, if the wireless IC tag 1 and the reader / writer in the oral cavity approach each other, mutual induction occurs between the antenna unit 2 and, in this case, the resonance frequency of the antenna unit 2 is slightly set in advance. By shifting to a higher level, it is possible to improve the substantial transmission / reception sensitivity of the wireless IC tag 1.

  The wireless IC tag 1 shown in FIG. 1 has a book-like shape as a whole and is flexible and can be used by bending. It is possible to adapt flexibly to this. Surgical periodontal treatment that attempts to regenerate and repair alveolar bone destroyed by marginal periodontitis in periodontal disease treatment in recent years has biocompatibility in the part where alveolar bone is lost due to periodontal disease An artificial regenerative space is created using a semipermeable membrane, and a technique called guided tissue regeneration (alveolar tissue regenerative surgery) that regenerates the part of the alveolar bone that was once lost is becoming widespread and used for this treatment. By including a wireless communication medium such as the wireless IC tag 1 of the present invention in the semipermeable membrane, the present invention can be applied to the periodontal tissue of the oral cavity in conjunction with periodontal tissue regenerative medicine.

  Next, a technique for installing the wireless IC tag 1 of the present invention in the alveolar tissue will be described. 2 to 5, FIG. 2 is a buccal side view of the right maxillary dentition in the human oral cavity and shows the first stage of the surgical procedure for periodontal tissue. 21 is a permanent dentition, 22 is a buccal side view of the periodontal tissue that supports the permanent dentition 21, includes gingiva and alveolar mucosa, and has alveolar bone inside. Reference numeral 23 denotes an incision line, and reference numeral 24 denotes a gingival and alveolar mucosa portion separated from the surrounding periodontal tissue by the incision line 23.

  In periodontal diseases such as periodontal disease, biofilms, plaques, and tartar due to bacteria produced by periodontal pathogens adhere to and accumulate on the surface of permanent dentition 21 and periodontal tissue 22. As a result, abscesses and defective granulation have occurred in the periodontal tissue 22. In the treatment of periodontal disease, calculus and plaque attached to the permanent dentition 21 are often removed, and incision and peeling are often performed to remove calculus and plaque in the periodontal tissue 22. Further, when removing defective granulation caused by periodontal disease, the periodontal tissue 22 is partially incised and detached. These are called surgical periodontal treatments. The incision line 23 is an incision line for exfoliating the gingiva during surgical periodontal treatment, and the gingiva / alveolar mucosa 24 located between the two incision lines 23 is exfoliated in a valve shape. Turn around.

  FIG. 3 shows the next stage of the procedure in the surgical procedure for periodontal tissue 22 beginning in FIG. The alveolar bone surface 31 inside is exposed by reversing the gingival valve 25 half-separated by the incision. At the time of surgical periodontal treatment, calculus and plaque adhering to the periphery of the permanent dentition 21 causing periodontal disease are removed, and defective granulation adhering to the alveolar bone surface 31 caused by periodontal disease is scraped. Take and remove. Depending on the surgical procedure, the bone surface of the alveolar bone may be exposed on the alveolar bone surface 31, but the alveolar bone surface 31 may be further covered with soft tissue as the periosteum depending on the gingival flap 25 peeling. It may become a state.

  FIG. 4 shows a state in which the book-film wireless communication medium of the present invention is installed in the surrounding tissue. In the process of FIG. 3, after removing the above-mentioned pathogenic factors of periodontal disease from the periodontal tissue, if it is a normal surgical procedure, the gingival flap 25 that has been exfoliated and inverted is restored to its original position. When the present invention is applied, as shown in FIG. 4, the wireless communication medium 1 shown in FIG. 1 is attached to the exposed alveolar bone or the surface 31 of the alveolar bone. At that time, fasten the booklet-like wireless communication medium 1 on the surface of the alveolar bone and fix the alveolar mucosa 24 by sandwiching it in the alveolar bone and the gingiva / alveolar mucosa 24, or fix a screw such as titanium. A plurality of wireless communication media 1 can be fixed by screwing to the surface of the alveolar bone. FIG. 5 shows a state in which the gingival valve 25 is restored after the installation of the wireless communication medium 1 of the present invention and a series of surgical periodontal treatments are completed. The gingival valve 25 is fixed to the restored position with sutures 51, and a plurality of sutures 51 are often used, and are associated with the gingival flap 25 and the surrounding gingiva and alveolar mucosa 24 and sometimes with individual teeth in the permanent dentition 21. This maintains the duplication of the gingival valve 25 and promotes the recovery of the surgical wound surface caused by the periodontal surgery. The surgical procedure applied in the present embodiment is generally performed as a surgical treatment in the treatment of periodontal disease, but the embodiment according to the present invention is not limited to this.

  As described above, the wireless IC tag 1 that is a wireless communication medium is embedded in the periodontal tissue in the oral cavity, but the periodontal tissue is an exercise device that controls mastication and conversation, and in particular, the alveolar bone in the periodontal tissue is chewable. When receiving a strong stress of about several tens of kilograms. Therefore, the wireless IC tag 1 fixed to the alveolar bone of the present invention is also subjected to a certain amount of stress during mastication and conversation. However, the human mandible has high rigidity, and even if a strong stress such as mastication is applied, the deformation is slight. Therefore, the wireless IC tag 1 of the present invention attached and fixed to the alveolar bone is inevitably deformed slightly during mastication, but it has a book-like shape and flexibility, so that its function and structure are adversely affected. I do not suffer. On the other hand, mastication and conversation are operations that are always performed on a daily basis as long as humans survive. Therefore, by providing the piezoelectric element 7 inside the wireless IC tag 1 of the present invention, an electromotive force is generated in the piezoelectric element 7 by obtaining slight deformation or vibration energy in the alveolar bone caused by mastication or conversation. Can do.

  By the way, piezoelectric elements 7 such as piezo elements and Rochelle salt cause crystal structures that generate electromotive force when subjected to stress, or power generation elements other than piezoelectric elements, such as magnetic materials and coils that move around them. If an element that generates electric power is installed, electric power is generated every time the alveolar bone receives an impact during mastication and every movement of the wearer, and the electric power can be supplied permanently. The electric power obtained in this way is transmitted to the IC chip 3 through the lead wire 8, and becomes a power source for operating the wireless IC tag 1. In addition, the generated power can be stored in a small capacitor separately installed in a wireless communication medium at all times, and can be used as needed to supply power as needed to operate the wireless IC tag 1.

  In addition, the size of the wireless IC tag 1 is such that it does not adversely affect the living body, but the wireless IC tag 1 of the present invention to be embedded is located between the soft tissue such as the periosteum and mucous membrane and the bone surface. Therefore, it is difficult to say that the wireless IC tag 1 does not impede the nutrient supply path from the mucous membrane to the bone surface. Therefore, in the wireless IC tag 1 of the present invention, it is desirable to provide through holes and cuts at various places in the membrane to such an extent that the function and durability are not impaired. For example, since the antenna unit 2 occupies most of the size of the wireless IC tag 1 of the present invention, if a gap is provided between the loop lines of the antenna unit 2, a supply path for feeding nutrients from the soft tissue to the bone surface through this gap. Can be secured.

  As described above, the wireless IC tag 1 of the present invention is painlessly opened inside the periodontal tissue in periodontal surgery performed for the purpose of treating chronic marginal periodontitis in dentistry, The bone tissue under the mucous membrane is fixed and indwelled by using the opportunity to appear, and can be integrated with the periodontal tissue by biocompatibility. Once the wireless IC tag 1 integrated with the human body is intended to be transplanted to another person using a dental specialist technique, it is extremely difficult to remove it at least uninjured. Is more accurate as the basis for identity verification. Therefore, if the present invention is used as an identity verification means, the wireless IC tag 1 is histologically integrated with the alveolar bone and the jawbone, that is, the periphery of the wireless IC tag 1 is ossified and finally the wireless IC tag. It is desirable to be buried in the bone.

  For this reason, it seems to be considered to promote bone formation around the wireless IC tag 1 by arranging a bone grafting material or a bone guide material around the wireless IC tag 1. Substances that promote bone induction and regeneration include bone morphogenetic protein (BMP), fibroblast growth factor (FGF), and brain-derived neurotrophic factor (BDNF). ) And other tissue regeneration factors can be applied. In addition, β-TCP (β-tricalcium phosphate), hydroxyapatite, OCP (Octacalcium Phosphate), etc. can be used as bone filling / inducing materials or scaffolds to promote ossification around the wireless IC tag 1. When applying these osteoinductive substances, add them to bioresorbable materials such as lactic acid, glycolic acid, and ε-caprolactone three-dimensional copolymer (PLGC), and add them around the wireless IC tag 1. Can guide the bone.

6 to 8 show a second embodiment of the present invention, FIG. 6 is a wireless communication medium (wireless IC tag), FIG. 7 is a cross-sectional view of the wireless communication medium, and FIG. 8 is an embedded wireless communication medium in periodontal tissue FIG.
In this embodiment, instead of the wireless communication medium (wireless IC tag) having the shape in the first embodiment, as shown in FIG. 8, the dental artificial root ( This is an example in which a wireless communication medium is formed in accordance with the shape of an intraosseous fixation fixture used for an implant. This is an example, and the shape and material of these periodontium-embedded wireless communication media in the present invention are not limited to this.

  In FIG. 6, 11a shows an entire image of a periodontium-embedded wireless communication medium (wireless IC tag), and 11b has an outer shape formed in a screw shape, which is suitable for being embedded and fixed in an alveolar bone. It is a fixture. This exterior is made of biocompatible materials, such as titanium, alumina, or hydroxyapatite, as well as artificial roots. The fixture 11b has a diameter of 4-8mm and a length of 5-15mm. It is formed to the extent. The fixture 11b can be formed in a blade or cylinder shape in addition to the screw shape. 11c is an antenna of a wireless IC tag included in the wireless communication medium.In this example, the antenna 11c is not placed in the alveolar bone, but is placed in the periodontal tissue submucosa and exposed to the oral cavity. Absent. 11d is a coil constituting the antenna 11c. The shape of the antenna 11c can be determined at any time according to the specifications of the reader / writer that performs communication with the IC tag 11a, but the surface layer or surface thereof is hydroxyapatite, alumina, or sapphire so as not to cause tissue damage to the living body. It is coated or coated with a material that is excellent in affinity to biological tissue, such as biological glass and polytetrafluoroethylene (PTFE), and that does not shield communication with an external reader.

  The cross-sectional view of the wireless IC tag 11a shown in FIG. 7 is an example of the configuration, and the structure, material, component configuration, etc. of these tissue-embedded wireless communication media in the present invention are not limited to this. 12a is an RFID IC chip, 12b is an antenna section, 12c is an antenna coil body, 12d is an antenna coil winding, 12e is an antenna coil core, 12f is a chip capacitor, and 12g is a material for sealing the above members. The circuit composed of 12a, 12c, 12d, and 12f is the same as that in the first embodiment. 12h is a portion embedded in the alveolar bone or the jawbone in the external shape of the wireless IC tag in the present embodiment, has a screw-like external shape, and is firmly fixed to the bone by screwing. Since this is a part of the exterior of the wireless IC tag and directly touches the living tissue, materials with excellent biocompatibility such as titanium and polytetrafluoroethylene (PTFE: Teflon (registered trademark)) are used. The sealing member 12g is covered. The antenna portion 12b is located outside the bone and is a portion under the periodontal tissue mucosa and directly in contact with the living tissue, but is also a portion in which an antenna for communicating with an external reader is incorporated. This is covered with an exterior member 12i which is a material such as polytetrafluoroethylene which has biocompatibility and does not shield communication, and covers the antenna portion 12b and its sealing material 12g, and the shape of the wireless IC tag 11a Is supported. The antenna 12b may be formed in a loop shape from a book-like material that can withstand the bending shown in the first embodiment.

FIG. 8 is a cross-sectional view showing a state where the wireless IC tag 11a is installed in the periodontal tissue. 13a is a periodontal tissue, 13b is a periodontal ligament, 13c is an alveolar bone, 13d is a periodontal soft tissue including a mucous membrane, and 13e is a tooth supported by the periodontal tissue.
The wireless communication medium 11a shown in FIG. 6 has a cylindrical shape with a diameter of about 6 mm and a length of about 8 mm for the portion of the alveolar bone 13c or the fixture 11b embedded in the jawbone. In FIG. Although the form is shown, it can also be made into the cylinder shape without a screw | thread according to the method of fixation in a bone.

The configuration of the wireless communication medium 11a shown in FIG. 12 is basically the same as that of the first embodiment. As an RFID integrated circuit 12a, a wireless device having a security function such as the my-d Vicinity SRF55 series (Infineon Technologies Japan). An IC chip can be used. This is suitable for the use of the wireless IC tag 11a in the second embodiment in a square size having a side of 1 mm. The transmitting antenna unit 12b is composed of an antenna coil body 12c and a chip capacitor 12f. Communication frequency of the IC chip 12a in the wireless IC tag 11a is 13.56MH _Z bands, the antenna portion 12b are optimized for transmission and reception of the frequency band is effectively implemented.

In order to satisfy the size of the wireless IC tag 11a shown in FIG. 6, the transmission / reception antenna unit 12b shown in FIG. 7 is formed in a button shape having a diameter of about 8 mm and a thickness of about 3 mm. To accommodate communication in the communication frequency 13.56MH _Z in this embodiment, in the antenna unit 12b, a diameter of about 4 mm, a coin-shaped antenna coil core 12e having a thickness of about 2 mm, 15 from about 10 turns by formals line 0.15mm Antenna coil winding 12d is applied to form an antenna coil body 12c. Further, both ends of the antenna coil winding 12d are connected in parallel with a chip capacitor 12f having a capacitance of 30 to 100 pF (picofaraday) to constitute an antenna portion 12b. Both ends of the antenna coil body 12c are connected to input / output terminals of an IC chip (RFID chip die) 12a as in the first embodiment. Each of these parts 12a to 12f is sealed by a sealing member 12g having affinity in order to prevent invasion of tissue fluid from surrounding living tissue, and a part of these parts that is installed inside the alveolar bone 13c is It is covered with an exterior member 12h having biocompatibility. Further, the antenna portion 12b continuous from the exterior member 12h embedded in the alveolar bone 13c is covered with periodontal mucosal tissue on the surface of the alveolar bone, and is covered with a biocompatible exterior material 12i. ing.

  As shown in FIG. 7, the sealing member 12g in the present embodiment is made of a material that does not hinder the communication function and has sufficient strength. Examples of applicable materials include cresol novolac type epoxy resins and biphenyl type epoxy resins in which general semiconductor sealing resin materials are used in addition to ceramics. In addition, in an environment rich in moisture and humidity that hinders the operation of the wireless communication medium 11a, such as in the oral cavity, the interior of the wireless communication medium 11a in which electronic components are stored is filled with water such as tissue fluid. Considering the need for complete isolation from living tissue, it may be necessary to use dicyclopentadiene (DCPD) type epoxy resin with low water permeability and hygroscopicity. The intraosseous fixture 11b covered with the exterior material 12h located in the alveolar bone is for fixing the wireless IC tag 11a including these to the alveolar bone 13c in the periodontal tissue 13a. A cavity for storing the electronic components of the wireless communication medium is formed inside, and a cylinder or screw-shaped outer shape with a diameter of about 6 mm and a length of about 8 mm is formed.

  The fixture 11b embedded in the bone uses a material having a function of osseointegration with a bone tissue such as titanium, alumina crystal, or hydroxyapatite as a material having biocompatibility, or a combination thereof. The antenna part 12b located in the gingival or oral mucosal tissue 13d covering the alveolar bone 13c is formed in a button shape having a diameter of about 8 mm and a thickness of about 3 mm, and includes the antenna part 12b of the wireless IC tag 11a therein. , Alumina oxide or sapphire, calcium phosphate, hydroxyapatite material, ceramics, tetrafluoroethylene resin (e-PTFE), biocompatible silicone In addition, biological glass or the like is used alone or in combination.

  As shown in FIG. 8, when the wireless communication medium 11a is installed in the oral cavity, it can be performed in accordance with the installation of the wireless communication medium 11a in the first embodiment, but without periodontal surgery. In addition, the wireless IC tag 11a can be implemented only for the purpose of installing in the periodontal tissue 13a. In that case, after applying painless treatment by local anesthesia used in normal dentistry, after making an incision of several centimeters in the oral mucosa of the site to be installed, a full-thickness valve including periosteum is formed to peel the gums Then, the alveolar bone 13c or the jawbone is exposed. Next, in accordance with the method of artificial tooth root placement by implant method in the alveolar bone 13c or jaw bone, about 6mm in diameter and about 8mm in depth to fit the outer shape of the fixture 11b inserted into the bone with respect to the bone Form a ~ 10mm cylindrical cavity. At this time, if the fixture 11b installed in the bone is screw-shaped, tapping is performed to form a screw thread in the cavity. Thereafter, the wireless IC tag 11a of the present invention is inserted into the cavity of the bone or screwed by screwing. Finally, the wireless IC tag is covered with an incised gingival flap, and then sutured and arranged to complete the installation. Of course, local anesthesia is essential for the above procedures, but periodontal surgery with scaling, root planing, periodontal pocket curettage, and gingival detachment with periodontal treatment in dental procedures. When performing local anesthesia such as the above, it is possible to follow Example 2 together with the periodontal tissue in a range where the local anesthesia is successful.

In this embodiment, a configuration and an operation example in the case where the wireless IC tag installed in the periodontal tissue in Embodiments 1 and 2 is used as an authentication means for identity verification will be described.
The communication distance of the wireless communication medium including the wireless IC tag installed in the oral cavity is communicated through an obstacle called a living tissue when the wireless IC tag of the ISO 15693 (nearby type) standard currently used is adopted. In practice, it is estimated that the maximum is about a dozen centimeters at maximum. Therefore, when communicating with the wireless communication medium installed in the oral cavity, it is necessary to bring the reader / writer close enough to the periphery of the oral cavity. Using this property in reverse, if the electronically unique authentication code, etc. contained in the wireless communication medium installed in the oral cavity is regarded as an “authenticator” that represents the person, In contrast, it is possible to perform control that only the user can perform by operating an electronic device that is set to react or be controlled only to the vicinity of the oral cavity. For example, in order to realize this on a mobile phone, first, the reader / writer function of the wireless IC tag is built in the mobile phone. The reader / writer is programmed so that the mobile phone functions only when the authentication body in the wireless communication medium in the oral cavity of a specific individual such as the owner is detected and identified. Then, when a person (user) who wears an authentication body permitting the use of a mobile phone in the oral cavity brings his mobile phone close to the mouth, it reacts to the authentication body in the oral cavity and can use the mobile phone. . From the outside, it seems that the user who owns the authentication body in the oral cavity automatically reacts and is controlled by the operation of bringing the cellular phone owned around the oral cavity closer.

  The operation example is given. For mobile phones that have a built-in reader / writer according to the present invention and can communicate with and control a wireless communication medium existing in the oral cavity, when calling in advance, normal operation such as button operation is in a call state Shall not be transferred to. First, the above-mentioned reader / writer is activated at the same time that a ringing call is made when an incoming call is received. If a wireless communication medium (wireless IC tag) that includes an authentication body that proves the identity of the person in advance is installed in the periodontal tissue of the owner of the mobile phone, the owner of the mobile phone The reader / writer built in the mobile phone inevitably approaches the wireless communication medium in the oral cavity to about 10 to 3 cm by taking a talking posture close to the part. Therefore, the reader / writer accesses the wireless IC tag, confirms the authentication body included in the wireless IC tag and indicates the owner of the mobile phone, and then controls the mobile phone to stop the call. Switch to state. In the past, when trying to limit the number of callers who could respond to incoming calls on a mobile phone, it was necessary to perform some operations on the terminal console in order to perform identity verification, such as entering a personal identification number or scanning a fingerprint. In this operation example, only a person who has the qualification to respond to an incoming call of the mobile phone can respond to the incoming call without any operation on the console by simply bringing the mobile phone close to the mouth. On the other hand, a person who corresponds to the mobile phone in the oral cavity and does not have an authentication body that proves the owner cannot respond to any operation. That is, this operation example is a telephone answering function based on automatic authentication, in which when a mobile phone arrives, the mobile phone confidence identifies the owner and permits the call.

  If there is no authentication means, no matter how many times a call is made in response to the call, the reader / writer in the mobile phone does not recognize the presence of the user and never enters a call state. This is very convenient for making the communication contents of the mobile phone unknown to others. With conventional mobile phones, if you want to strictly limit the operations and calls to the user, you usually lock the answering function at the time of incoming call, and lock it with a PIN code or hidden switch for each incoming call, in recent years biometrics authentication such as fingerprint However, it was usually necessary to take time to perform these operations. However, by operating as described above, even a function that enables the use of the mobile phone strictly for the user can be performed without any change from the normal operation. When an incoming call is received, an operation for switching to a call state by a switch or the like is unnecessary, and the response operation is rather quick.

  By adding these reader / writer functions to the mobile phone, the function to receive signals from the wireless IC tag attached to the oral cavity is not the function that uses the wireless IC tag in the owner's oral cavity as the lead. In addition, for example, it can be used as a function for detecting unauthorized access aimed at an individual having a wireless communication medium in the body. Needless to say, cell phones are carried around by owners on a daily basis. Therefore, if there is a mobile phone incorporating the function of the present invention in the vicinity of the person wearing the wireless communication medium, the receiving function can detect this when an unauthorized access to the wireless communication medium is attempted. For example, suppose that a person who attempts to gain unauthorized access to a wireless IC tag located in the oral cavity radiates radio waves toward the wireless IC tag in the oral cavity for access. The radio wave must be at the frequency at which the wireless IC tag operates. However, at the same time, the radio wave of that frequency is also a frequency that can be received by the mobile phone reader of the wireless IC tag wearer. So, at least if a wireless communication medium wearer targeted by unauthorized access is carrying a mobile phone or if its read / write function is operating in the vicinity, the possibility of detecting the unauthorized signal is extremely high. . A mobile phone with a wireless IC tag read / write function activates such a function to detect unauthorized access except when communicating directly with the wireless IC tag in the oral cavity. When a radio wave that can be seen is detected, it is possible to warn unauthorized wireless access to the owner of the wireless IC tag by using a ringing tone of a mobile phone.

  In addition, when a wireless communication medium embedded in periodontal tissue is used as an authentication means for identity verification, various wireless communications included in mobile communication devices such as a mobile phone having a function of communicating with such a wireless communication medium. In addition to the terminal function, the use and operation of transportation equipment such as automobiles, trains, and airplanes can be limited to the owner and those authorized to operate the equipment. Specifically, a headphone with a communication microphone that does not interfere with driving operation, as seen in a hands-free portable device used by a driver of a car, incorporates a communication antenna with a wireless communication medium in the oral cavity, By detecting the authentication body in the oral cavity including during driving, driving of the automobile is permitted only to drivers permitted in advance. In addition, the owner of the building and those who are allowed to enter and use the building by detecting the presence of the above-mentioned certification body, allowing the entrance, entrance door, and safe door of the building to be locked or opened and closed. It is possible to allow entry and passage only for.

  As described above, the periodontium-embedded wireless communication medium of the present invention is safely and stably placed in the oral cavity for a long period of time, and has high stealth and high accuracy. It is widely provided to the public. In addition, the reader / writer function built into the handset is in the oral cavity by taking a posture to make a call using a handset (handset) of a telephone or a mobile phone that incorporates the reader / writer function of the wireless IC tag of the present invention. The distance is about 10 cm from the wireless IC tag, and close communication between the wireless IC tag and the reader / writer function becomes possible. Because the distance between the reader / writer and the wireless IC tag is extremely short, communication with relatively weak radio waves is possible, minimizing external noise contamination, and suppressing leakage of radio waves to the outside. It also contributes to preventing the interception of communication by others. Such an effect can be obtained as an equivalent effect without performing treatments on teeth that are unavoidable in the implementation of Japanese Patent Application No. 2001-176888 and mounting of a necessary crown structure.

Next, the general utility of the periodontium-embedded wireless communication medium described in Examples 1 to 3 and the social importance of using it as personal authentication means will be described.
In the area related to security, being already an IC card owner is not considered the decisive factor for authentication. In the United States, fingerprints are collected from all long-term residents entering the country to prevent crimes such as terrorism. In 2005, the owner's fingerprints and iris patterns were recorded in the passport. We will perform strict personal authentication by inquiring. Thus, in recent years, not only presenting a personal identification card to be carried, but also a recitation code, biometric pattern recognition, that is, biometric risk authentication has been widely used in identity verification. However, as described above, the method based on personal biometric information needs to provide information related to the body's privacy that cannot be replaced by the individual, but handles such biometric information related to personal privacy. The security system must be operated very carefully.

  Therefore, as already mentioned, a wireless IC tag that includes a unique authentication means is installed in the body as a means to completely prevent impersonation and become a decisive factor for identity verification without using personal ecological information as a means for identity verification. Attempts to verify identity by embedding in and integrating with the person have begun. Although various problems have been pointed out from the ethical point of view to install electronic communication media, etc., which are originally foreign bodies in the living body, forgery of identification or impersonation is required for authentication aimed at ensuring social safety. Because it is necessary to strictly eliminate the password, the merit has come to attract attention in the present situation where electronic authentication is widely spread. In particular, since the September 2001 terrorist attacks in September 2001, embedding of authentication means in the body has been put into practical use as a means of establishing a high level of security from the viewpoint of security. Nonetheless, there are still fears and aversions to the act of trying to embed these authentication means in their own body as mere identity verification means.

  Regarding the effect obtained by the method of integrating the wireless communication medium with the teeth according to the Japanese Patent Application No. 2001-176888, with respect to the aspect of mounting the electronic communication medium in the body, the authentication means is attached to the conventional encapsulated wireless IC tag. However, the method of Japanese Patent Application No. 2001-176888 does not incise the skin during implantation, although it seems that it is not much different from the method of embedding the communication medium in the body under the skin. It is advantageous in that it is not bleeding or painful. Also, there is no bleeding or pain during removal or replacement. It is completely different from various medical measures such as pacemakers and artificial joints that incorporate an artifact into a living body. Compared with these, the invasion and stress on the living body are extremely small.

  The method of Japanese Patent Application No. 2001-176888 having such merits is a medical technique such as blood pressure, pulse, blood glucose level, etc. by incorporating various biometric sensors in an electronic communication medium installed in the living body in the future. Development of a system that monitors extremely useful information over time is expected, and it will lead to a method that greatly contributes to the maintenance of physical health, and its significance is extremely great. However, as described above, the Japanese Patent Application No. 2001-176888 can be applied only when the teeth are pathologically greatly collapsed. Then, a simple question arises as to whether people with healthy dentitions without caries can have the benefits described above.

  Due to the increasing interest in oral hygiene in recent years, careful oral care by parents has been practiced for children since the early childhood. As a result, there has been no history of caries in permanent teeth in recent years. It is highly desirable that young people are increasing. However, when people with such a healthy oral cavity encounter a situation where they need to verify their identity in response to security system requirements at various occasions, one of the solutions is probably healthy. Although you may try to embed an electronic communication medium in your teeth, you must strictly refrain from actions that cause unwanted invasiveness to your teeth. Although it is unavoidable for such people, I think that you should carry out an authentication operation every time identity verification is required using a pass card, PIN, biometrics, etc. In addition, considering the importance of these authentication means and proofs directly related to the social and economic properties of the person, it is ironic, but it is related to the operation and management of the proofs and the storage of the proofs. As for the labor, although the health of the teeth was impaired, the identification method and the verification body were incorporated into the body by the method of the aforementioned Japanese Patent Application No. 2001-176888, so that the identity verification was automated, and the carrying of the card and the authentication work were made unnecessary. You will have to spend a lot of time rather than those who have gone. If you have ever lost your license or credit card, or have been stolen, how much pain was involved in dealing with it and how much effort it took, and after that bitter experience, Recalling how hard it was to take measures to prevent it in life would highlight the difference.

  Considering the concern that people who focus on oral hygiene in this way and maintain healthy teeth will be disadvantaged when incorporating authentication systems such as identity verification into the oral cavity, it is quite natural in light of the law. Therefore, it is also an important mission of the present invention to establish a means for safely storing the electronic communication medium including the authentication means in the body without causing unreasonableness to deal with healthy teeth. . Therefore, there is a need for a method of installing a wireless communication medium in the body by a method with minimal invasiveness to the living body as much as possible even when the pathological decay of the tooth is mild or people who do not have a disease in the tooth itself. In such a case, the present invention uses the methods of Embodiments 1 and 2 so that the process of incorporating the wireless IC tag into the living body can be introduced with only a little effort for general periodontal treatment. .

Such a method for introducing a wireless IC tag into a living body according to the present invention is clearly different from the conventional method of introducing a non-contact wireless IC tag (VeriChip ^™ ) encapsulated in a biological glass subcutaneously from a humanitarian viewpoint. There are two differences. One of them is that the introduction can be performed as part of the commonly practiced dental treatment, and there is less ethical resistance compared to conventional methods that are implemented for the sole purpose of implanting wireless IC tags. It is. Regarding the surgical procedure itself for the treatment of periodontal disease, it is a matter already understood by the patient to cause a certain amount of pain, and the installation of the wireless IC tag performed in the process is a new one for the patient. Unless it is a kind of invasion or pain, the resistance to its introduction should naturally be reduced. Second, once the wireless IC tag installed in the oral cavity has to be taken out for some reason, if it is under the skin, it is inevitable that the scar will be left behind by the removal. Can be a factor that adversely affects As for communication media such as wireless IC tags installed in periodontal disease tissues, if removal is necessary, it is inevitable to leave scars on the gums and oral mucosa after removal. There are very few opportunities to appear on the surface, and there is no doubt that the mental burden on the patient after removal is much smaller than when a wireless IC tag is placed under the skin.

  Since the periodontal disease treatment itself is an opportunity to install the wireless IC tag of the present invention, the present invention can be implemented as an incidental to the periodontal treatment. In carrying out the present invention, as a mutual purpose with periodontal disease treatment, anesthesia for periodontal disease treatment is performed, and after completion of surgical periodontal treatment, a very small amount of process is added to the wireless IC. The tag is installed. Therefore, from the viewpoint of the patient to which the present invention is applied, even if it is an in-vivo implantation method with an open surgical technique, the embedding operation itself is hardly recognized as pain. That alone will reduce the mental burden on the patient compared to the conventional method of implanting a wireless IC tag under the skin.

  From a paradoxical point of view, it can be said that, in a sense, Examples 1 and 2 were developed so as to never damage important human skin in order to embed an IC chip in the body. Although the present invention is a part of periodontal disease treatment, in order to install a wireless IC tag under the oral mucosa, it is necessary to make a certain degree of incision, that is, wound, in the oral tissue. It can't be denied that it looks inhumane like the method in IC tags. However, as noted above, it should be noted that these are performed concomitantly with dental treatment.

  Among the dental diseases, a disease in which the alveolar bone supporting the teeth is gradually destroyed and disappeared, such as periodontal disease, the peripheral alveolar bone around the teeth is particularly destroyed, and when it progresses, all bones supporting the teeth are lost. It is a lifestyle-related disease that loses teeth by losing the ability to connect the jawbone and teeth. Due to periodontal disease, also called national illness, in Japan, about 90% of teeth are lost by the age of 80. Although there are quite a few people who have no history of dental caries or other dental problems, it is impossible for these lucky people to avoid periodontal disease throughout their lives. There will always be opportunities for people to have treatment for periodontal disease. In that case, it is customary to remove the tartar with considerable bleeding in the gingiva, or to perform a cleaning to remove the biofilm firmly attached. Moreover, in reality, many of them are carried out without anesthesia, and the patient dares to suffer pains in order to restore oral health.

The present invention is applied during highly specialized surgical periodontal treatment. Surgical periodontal therapy is carried out with particular care and meticulous care after a complete pain-free treatment. Therefore, the present invention applied by a surgical technique is also particularly carefully secured, and the safety of the present invention is sufficiently secured together with the material embedded in the body. However, in the event of unforeseen circumstances, there may be a situation where it is unavoidable to remove the wireless IC tag once installed in the oral cavity. However, even if such a situation occurs unfortunately, if a similar situation occurs in a non-contact wireless IC tag (VeriChip ^TM ) embedded in the skin, an incision is made in the skin to remove it. Since there is a high risk that scars will remain on the skin after removal, especially if the wireless IC tag has moved from its original implantation position, especially in the deep direction of the tissue or the appearance. When it is moved to a position where it is more easily exposed, not only is it difficult to take it out, but even if it can be taken out, the possibility that the scar will become larger and more easily exposed will increase.

  On the other hand, when it is buried under the oral mucosa, the same is true at the time of removal, but as long as the wearing position is in the oral cavity, the remaining is a scar on the oral mucosa, so normal social life So it seems that there is almost no chance to see this. In the present invention, the installed wireless communication medium is stored in the alveolar bone and jawbone, and there is very little possibility of movement from the initial implantation position, and the scar generated during the removal has already occurred during the implantation. It appears only at the same site as the scar, and apparently there is little chance of a new scar. Although the present invention seems to have an inhuman problem at first glance, when it focuses only on its implementation method, it seems to have an inhumane problem, but it is actually a service added to the medical practice related to periodontal disease. Yes, as well as convenience, consideration is given to human rights and privacy. It can bring extremely high benefits to the wearer's social activities.

  It is expected not only to be a simple security solution like identity verification means, but also to provide great convenience to people's lives. The wireless IC tag installed in the oral cavity includes an automatic recognition mechanism represented by RFID. By using the security function that is a part of its capability, it can be used for communication devices such as mobile phones. It can be used only by its owner, and contributes to confidentiality and privacy protection, while achieving quick communication operations. That is, as shown in the third embodiment, the automatic response system based on the user authentication in the mobile phone using the electronic authentication means in the oral cavity can give strict security to the mobile phone including a lot of information on privacy. On the contrary, it has the effect of two birds with one stone, that the operability and convenience are improved. This indicates the possibility of solving the conflicting propositions of ease of operation and ensuring security, which had been a bottleneck with conventional mobile phones, at once. Furthermore, the system can easily incorporate a warning function against unauthorized access by the owner to the wireless IC tag in the body, and an advanced security function that keeps away malicious persons can be realized.

  Basically, the policy of the present invention is not to cause significant invasion of the body, but it would be difficult to eliminate the resistance itself to installing an electronic communication medium in people's bodies. However, as cardiac pacemakers and artificial joints greatly helped patients to return to society and were accepted by people as medical care, the benefits of their application will be provided to more people, and the convenience will permeate society. Thus, it is possible to dispel the concerns regarding the Japanese Patent Application No. 2001-176888 and the present invention. The greatest advantage of the present invention is that it is possible to use the opportunity of attaching an artificial object to a living body, which has been widely accepted historically as a treatment of teeth, in order to relieve the sense of incongruity of enclosing foreign substances in the body, exactly It is practiced at the true height of the dental field. It is expected to be a great step for people to enjoy the benefits of downsizing brought about by the development of electronics, which Japan is most good at.

1 is an overall view of a wireless communication medium (wireless IC tag). Example 1 It is explanatory drawing of the method of embedding a wireless communication medium in periodontal tissue. Example 1 It is explanatory drawing of the method of embedding a wireless communication medium in periodontal tissue. Example 1 It is explanatory drawing of the method of embedding a wireless communication medium in periodontal tissue. Example 1 It is explanatory drawing of the method of embedding a wireless communication medium in periodontal tissue. Example 1 It is a wireless communication medium (wireless IC tag). (Example 2) 1 is a cross-sectional view of a wireless communication medium. (Example 2) It is a figure which shows the example which embed | buried the radio | wireless communication medium in periodontal tissue. (Example 2)

Explanation of symbols

1, 11a Wireless communication medium (wireless IC tag)
2, 11c antenna
3, 12a IC (RFID) chip
4, 5, 8 lead wire
6, 12f chip capacitor
7 Piezoelectric element
9 Electronic communication media
11b fixture
11d, 12c antenna coil body
12b Antenna part
12d antenna coil winding
12e antenna coil core
12g sealing material
12h Exterior material (for bone implantation)
12i Exterior member (for antenna)
13a Periodontal tissue
13b Periodontal ligament
13c Alveolar bone
13d Periodontal soft tissue
13e teeth
21 Permanent dentition
22 Alveolar tissue
23 Incision line
24 Alveolar mucosa
25 Gingival flap
31 Alveolar bone surface
51 suture

Claims (10)

  A wireless communication medium embedded in a living tissue, wherein the wireless communication medium includes an antenna unit and an electronic communication medium unit, and the wireless communication medium is embedded in a periodontal tissue. Communication medium.   The antenna portion constituting the wireless communication medium is formed by forming a foil-like conductive material having biocompatibility in a loop shape, and the electronic communication medium portion is embedded with the biocompatible material, and the entire wireless communication medium is The periodontium-embedded wireless communication medium according to claim 1, wherein the radiocommunication medium is embedded in a periodontal tissue along a surface of the alveolar bone and formed into a flexible book membrane shape.   The outer shape of the communication medium part constituting the wireless communication medium is formed in a cylinder shape or a screw shape and embedded in a material having biocompatibility, the communication medium part is embedded in an alveolar bone, and the antenna part is a tooth. The periodontium-embedded wireless communication medium according to claim 1, wherein the wireless communication medium is embedded in a surrounding tissue.   The antenna is coated or sealed with a material having electrical insulation and biocompatibility when a material having poor biocompatibility is used for the antenna constituting the wireless communication medium. Embedded periodontal tissue embedded wireless communication medium.   In the circuit of the wireless communication medium, a piezoelectric element that generates electromotive force due to stress that repeatedly deforms the alveolar bone by jaw movement during meals or conversation is provided, and the wireless communication medium is operated by the electric power generated in the piezoelectric element. The periodontium-embedded wireless communication medium according to claim 1.   6. The capacitor according to claim 1, further comprising: a capacitor that stores electric power generated in the piezoelectric element in the circuit of the wireless communication medium, and supplies the electric power to the circuit as needed to operate the wireless communication medium. A wireless communication medium embedded in periodontal tissue.   The wireless communication medium is provided with a mobile communication terminal having a function such as a reader / writer that can be wirelessly connected from the outside, and various information such as electronic information that proves the identity through the communication terminal is transmitted to the wireless communication medium. The periodontal tissue-embedded wireless communication medium according to claim 1, wherein the stored information is input / output controlled by wireless communication.   The wireless communication medium circuit embedded in the periodontal tissue incorporates authentication means for permitting a telephone call function, and a communication function capable of communicating with the wireless communication medium is provided in an external wireless communication information terminal, A search function for recognizing an authentication means of a wireless communication medium installed in the oral cavity is provided in conjunction with an incoming call of the wireless communication information terminal, and the receiver of the information terminal is brought close to the wireless communication medium with the search function active. Thus, communication with the wireless communication medium becomes possible. Subsequently, the authentication means is recognized to determine whether communication is possible. When communication is possible, read / write to the wireless communication medium in the oral cavity is performed in accordance with the timing. The periodontium-embedded wireless communication medium according to claim 1, wherein communication and control are possible.   The wireless communication medium embedded in the periodontal tissue has a function of receiving and detecting an unauthorized access signal, and the wireless communication medium has a function of issuing an alarm in response to the signal received and detected the unauthorized access signal. The periodontium-embedded wireless communication medium according to claim 1, wherein the wireless communication information terminal is incorporated into a wireless communication information terminal to eliminate unauthorized access.   A mobile wireless communication device such as a mobile phone, a transport device, or an architecture having an authenticating means for authenticating the wireless communication medium embedded in the periodontal tissue and having a communication function for the wireless communication medium by the authenticating means. The periodontium-embedded wireless communication medium according to claim 1, wherein the operation is permitted only to a person who is permitted to operate by wireless communication to open and close a door of an object / safe.

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