JP4904510B2 - How to open a medical container - Google Patents

Description

  The present invention relates to a medical container, a sealing method for sealing an opening of a mouth portion of a medical container, and a method for opening the opening.

  A medical container (hereinafter also referred to as a container) used for infusion of contents such as infusion and the like has a mouth portion, and the contents are injected into the container from the opening of the mouth portion. The For example, there is a medical container disclosed in Patent Document 1.

JP 2000-52413 (2nd page, FIGS. 1 to 3)

  However, the manufacture of the container and the injection of the contents are not necessarily performed simultaneously. Since germs and foreign substances may be mixed in the container during the transportation of the container, it was necessary to clean the container before injecting the contents.

  However, if there is no container cleaning step, the work efficiency is improved accordingly. Therefore, in order to maintain the inside of the container in a sterile state during transportation and prevent contamination by foreign substances, or to prevent deformation of the container during transportation, the container is filled with sterile air and then the opening at the mouth of the container Has been desired to be provided in a state of being sealed by a sealing body.

  Along with such a sealing method, a method of opening the container safely and quickly is also desired. That is, if the cut or cut with a cutting tool or the like is opened by breaking, there is a possibility that a cut end of the sealed body remains as a foreign object. Moreover, if time is required for opening, the work efficiency also decreases.

  An object of the present invention is to provide a method for sealing a medical container so as to prevent contamination of foreign bacteria and foreign matters, and a method for opening the sealed body without leaving a broken piece or the like as foreign matters.

  As a result of diligent studies to achieve the above object, the present invention is a medical container having a mouth portion, in which a synthetic resin film is welded to the surface of the mouth portion by heat welding, and the opening of the mouth portion is sealed. The container sealing method was adopted.

  Since medical containers are generally made of synthetic resin, according to heat welding (also referred to as heat sealing or heat sealing), there is no gap between the mouth portion and a synthetic resin film (hereinafter referred to as a film) as a sealed body. Can be welded. As a result, it is possible to prevent contamination of bacteria and foreign matters in the container. Further, deformation of the container during transportation can be prevented.

  Further, in a medical container having a mouth portion, a synthetic resin film is welded to the surface of the mouth portion by ultrasonic longitudinal vibration, ultrasonic torsional vibration, or a mixture vibration thereof, and the opening of the mouth portion is sealed. A container sealing method can also be employed.

  When a film is disposed on the surface of the mouth portion and is vibrated by ultrasonic vibration, friction is generated between the mouth portion and the film. Due to the heat generated by the friction, the mouth and the film are welded together.

  In a medical container having a mouth portion, a method of sealing a medical container in which a synthetic resin film is welded to the surface of the mouth portion by high frequency dielectric welding and the opening of the mouth portion is sealed can be employed.

  The synthetic resin generates heat by applying a high frequency electric field using the dielectric loss of the synthetic resin. Utilizing this phenomenon, a film is disposed on the surface of the mouth portion, both are sandwiched between two electrodes, and a high frequency current is passed between the electrodes, whereby the mouth portion and the film generate heat. Since both of them are dissolved by the heat generation, they are welded to each other.

  In a medical container having a mouth portion, a method of sealing a medical container in which a synthetic resin film is welded to the surface of the mouth portion by laser welding and the opening of the mouth portion is sealed can be employed.

  When the laser beam is irradiated, the irradiated portion is heated by the energy of the laser beam. When a film is disposed on the surface of the mouth portion and the film is irradiated with laser light, the film is heated. At the same time, since the film is transparent or translucent, part of the laser light is transmitted and the mouth is also heated. Accordingly, the mouth portion and the film are dissolved, and are thus welded to each other. The optical system can scan the laser beam along the mouth portion or change the width of laser irradiation. Further, if the laser beam is branched into a plurality of parts by a prism, a half mirror, a beam splitter, etc., it is possible to weld a film to a plurality of containers at the same time.

  The synthetic resin film may be a method for sealing a medical container which is a multilayer film for two or more easy peels.

  If the synthetic resin film is a multilayer film for two or more easy peels, it is possible to open the seal without leaving a broken piece or the like. The multilayer film for easy peel is a multilayer film including a seal layer and a peel layer, and can be easily peeled and opened (easy peel property, easy openability). Any of the cohesive peeling type in which the seal layer is broken and peeled off, the delamination type in which the seal layer peels from other layers, and the interface peeling in which the seal layer peels from the welded surface can be used.

  Moreover, the medical container by which the opening part of the opening part was sealed with the synthetic resin film by one of the methods described above is also employable.

If the opening of the mouth is a medical container sealed with a synthetic resin film,
The seal can be easily opened by peeling or dissolving, and there is no possibility that a piece of film will remain in the container.

  Further, the mouth portion has a flange, the inner peripheral surface of the flange is disposed on the container lower side with a stepped portion with respect to the outer peripheral surface of the flange, and a synthetic resin film is formed on the outer peripheral surface of the flange. A medical container that is welded and sealed at the opening of the mouth can also be used.

  When the seal opening method by dissolution shrinkage described later is employed, the film remains in a contracted state at the peripheral edge in the mouth portion. The mouth portion has a flange, the inner peripheral surface of the flange forms a step with respect to the outer peripheral surface of the flange and is disposed on the container lower side, and a synthetic resin film is welded to the outer peripheral surface of the flange. Therefore, the film that has been melted and shrunk remains on the stepped portion and does not protrude outward from the outer peripheral surface of the flange. As a result, welding of a synthetic resin film, a cap and the like performed after filling the contents becomes easy.

  Moreover, it can also be set as the medical container whose level | step difference of the outer peripheral part surface of the said flange and the inner peripheral part surface of the said flange is 0.3-1.5 mm.

  If the thickness is less than 0.3 mm, the film with the stepped portion contracted small cannot be accommodated, which hinders the welding of a synthetic resin film, a cap or the like performed after filling the contents. On the other hand, if the thickness exceeds 1.5 mm, the flange portion with the stepped portion becomes thin and the strength of the flange may be lowered.

  Further, the inner peripheral surface of the mouth portion is disposed on the container lower side with a stepped portion with respect to the outer peripheral surface of the mouth portion, a synthetic resin film is welded to the outer peripheral surface of the mouth portion, and the mouth It can also be set as the medical container with which the opening part of the part was sealed.

  When the thickness of the mouth portion is relatively thick, it is not necessary to provide a flange, but the outer peripheral portion and the inner peripheral portion of the mouth portion are provided, and the inner peripheral surface forms a step with respect to the outer peripheral surface of the mouth portion. A film that can be disposed on the lower side of the container and similarly melted and shrunk at the time of opening remains in the stepped portion, so that subsequent welding of a synthetic resin film, a cap, or the like is facilitated.

  When injecting the contents into a sealed container by the method described above, it is necessary to open the film. At this time, it is necessary to remove the sealed film. However, if the film is cut or broken, a piece of the film may remain as a foreign substance. In such a case, the opening method described below can be employed.

  That is, in a medical container having a mouth part, and the opening part of the mouth part sealed with a synthetic resin film, a method for opening the medical container is employed in which the synthetic resin film is melted and shrunk from the center part to open. it can.

  The synthetic resin film can be opened evenly and quickly by dissolving and shrinking the synthetic resin film from its center.

  Further, the distance between the central portion of the synthetic resin film and the heat generating tip is the shortest, the distance between the peripheral portion of the synthetic resin film and the heat generating peripheral portion is relatively long, and the radiant heat reaching the central portion of the synthetic resin film. Using a heating element provided with a heating tip having a maximum amount and a heating peripheral part, the heating element is brought close to it, and the synthetic resin film is melted and contracted from the central part by the radiant heat from the heating element to be opened. It can be set as the opening method of a medical container.

  Using the radiant heat from the heating element, the film can be dissolved and contracted, and the container can be opened. If the distance from the heating element and the irradiation time of the radiant heat are adjusted, the mouth portion will not be dissolved. In particular, the distance between the central portion of the synthetic resin film and the heat generating tip is the shortest, the distance between the peripheral portion of the synthetic resin film and the heat generating peripheral portion is relatively long, and the radiant heat that reaches the central portion of the synthetic resin film By bringing the heating element close to the heating element provided with the heat generating tip and the heating peripheral part with the maximum amount, and by opening the synthetic resin film by melting and shrinking from the central part by radiant heat from the heating element The synthetic resin film can be opened evenly and quickly by dissolving and shrinking the synthetic resin film from its central portion. Moreover, it can prevent that the synthetic resin film does not melt and shrink around by being heated uniformly, and the dissolved synthetic resin film falls and remains inside the container.

  Moreover, it can be set as the opening method of the medical container which melt | dissolves and opens the said synthetic resin film from a center part from the hot air means from which the hot air which reaches | attains the center part of a synthetic resin film becomes the maximum.

  When hot air is applied to the film, a part of the film dissolves and opens, shrinks in the film surface direction, and the container is opened. Since the film shrinks, a part of the film becomes a broken piece and does not remain in the container. Further, since the mouth portion is sufficiently thicker than the film, if the hot air is adjusted with a nozzle or the like, the mouth portion will not be dissolved. In particular, according to the hot air means that maximizes the hot air reaching the central portion of the synthetic resin film, the synthetic resin film can be opened by dissolving and shrinking from the central portion, and can be opened evenly and quickly.

  The mouth portion has a flange, the inner peripheral surface of the flange forms a step with respect to the outer peripheral surface of the flange and is disposed on the container lower side, and a synthetic resin film is formed on the outer peripheral surface of the flange. In the medical container which is welded and the opening of the mouth portion is sealed, the synthetic resin film may be melted and shrunk from its central portion to open the medical container.

  Before opening, the mouth portion has a flange, the inner peripheral surface of the flange forms a step with respect to the outer peripheral surface of the flange, and is disposed on the container lower side, and the synthetic resin film is formed on the outer peripheral surface of the flange. Therefore, a film obtained by dissolving and shrinking the synthetic resin film from its central portion remains on the stepped portion and does not protrude from the outer peripheral surface of the flange to the outside of the container. As a result, welding of a synthetic resin film, a cap and the like performed after filling the contents becomes easy.

  The inner peripheral surface of the mouth portion is arranged on the container lower side with a stepped portion with respect to the outer peripheral surface of the mouth portion, a synthetic resin film is welded to the outer peripheral surface of the mouth portion, and the opening of the mouth portion In the medical container in which the part is sealed, the synthetic resin film may be melted and shrunk from the central part to open the medical container.

  Similarly, if the thickness of the mouth portion is relatively thick, a stepped portion can be formed. In such a case, the synthetic resin film or cap that is formed after filling the contents without the film in which the synthetic resin film is melted and shrunk from the center portion remains on the stepped portion and does not protrude from the outer peripheral surface of the flange to the outside of the container It becomes easy to weld.

  A medical container having a mouth portion, wherein the opening portion of the mouth portion is sealed with a synthetic resin film, wherein the synthetic resin film is irradiated with laser light, and the synthetic resin film is dissolved and contracted to be opened. The opening method can also be adopted.

  If the film is locally irradiated with laser light, only the irradiated portion is melted and contracted, so that the container can be opened without leaving a broken piece or the like.

  A medical container having a mouth portion, wherein the opening portion of the mouth portion is sealed with a synthetic resin film, and the synthetic resin film is melted and contracted by high frequency dielectric to open the medical container. Can also be adopted.

  Only the film is heated and melted and contracted by the high-frequency dielectric utilizing the dielectric loss of the film, so that the container can be opened without leaving a broken piece or the like.

  Opening of a medical container having a mouth portion, wherein the opening portion of the mouth portion is sealed with a synthetic resin film, and the synthetic resin film is opened by dissolving and shrinking the synthetic resin film by electromagnetic induction A method can also be adopted.

  By electromagnetic induction, only the film is heated and melted and contracted, so that the container can be opened without leaving a broken piece or the like.

  In a medical container having a mouth portion, the opening portion of the mouth portion being sealed with a synthetic resin film, the synthetic resin film is held, the inner peripheral portion of the synthetic resin film is cut out, and the cutout synthetic material A method of opening a medical container in which the resin film piece is removed and opened can also be employed.

  Since the synthetic resin film is held, the inner peripheral portion of the synthetic resin film is cut out, and the cut out piece of the synthetic resin film is removed, so that the opened film does not remain inside the container. The film can be held by suction using a tube, a tube, or the like. After the film is cut out, the film can be similarly removed.

  In a medical container having a mouth portion and the opening portion of the mouth portion being sealed with a peelable synthetic resin film, a method of opening the medical container in which the synthetic resin film is peeled and opened can also be employed.

  In particular, when it is sealed with a peelable synthetic resin film, if the synthetic resin film is peeled off, it can be opened without leaving a cut end, etc. A multilayer film can be suitably used, and any type of film of cohesive peeling, delamination, and interface peeling can be used.

  The container is often used immediately after the contents are injected, but there are times when it is necessary to temporarily store it again. In such a case, the synthetic resin film that seals the opening of the mouth portion of the medical container is opened by any one of the above-described hot air, radiant heat, laser, high frequency dielectric, electromagnetic induction, notch, and peeling, and the medical container The inside is filled with the contents, and the opening of the mouth is sealed again by the synthetic resin film or cap welding by any of the above-mentioned thermal welding, ultrasonic vibration welding, high frequency dielectric welding, or laser welding. A container filling method can be employed.

  By such a method, the film can be sealed again, and the contents can be stored without contamination with foreign bacteria and foreign matters.

  According to the present invention, in the medical container, since the synthetic resin film is welded and sealed to the mouth portion, contamination with foreign bacteria and foreign matters can be prevented, and deformation during transportation can be prevented. Further, since the synthetic resin film is melted and shrunk at the time of opening, it can be opened without remaining a broken piece or the like as a foreign substance.

It is a schematic sectional drawing which shows the medical container which is the object of the method which concerns on this invention. It is a figure which shows the method of welding a film by heat welding. It is a figure which shows the method of welding a film by ultrasonic vibration. It is a figure which shows the method of welding a film by a high frequency dielectric. It is a figure which shows the method of welding a film with a laser. It is principal part sectional drawing of the mouth part of the medical container which concerns on this invention. (A) shows the cross section before opening, (b) shows the cross section after opening. (C) shows a state in which the step portion is constituted by the welding margin, and (d) shows a state in which the step portion is constituted by the welding margin. It is a figure which shows the method of opening a seal | sticker with a hot air. It is a figure which shows the method of opening a seal | sticker by radiant heat. It is a figure which shows the other method of opening a seal | sticker by radiant heat. It is a figure which shows the method of opening a seal | sticker with a laser. It is a figure which shows the method of opening a seal | sticker by electromagnetic induction. It is a figure which shows the method of opening a seal | sticker by a notch.

DESCRIPTION OF SYMBOLS 1 Medical container 2 Container part 3 Mouth part 3a Flange part 4 Opening part 5 Synthetic resin film 10 Heating element 11 Anvil 12 Winding device 15 Blade part 16 Welding part 20 Ultrasonic vibrator 30 High frequency power supply 40, 70 Laser oscillator

BEST MODE FOR CARRYING OUT THE INVENTION

  Hereinafter, the sealing method and the opening method according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing a medical container which is an object of the method according to the present invention. In FIG. 1, 1 is a medical container, 2 is a container part, 3 is a mouth part, and 4 is an opening part. The medical container 1 has a structure in which a substantially cylindrical mouth part 3 is attached to a container part 2. The contents are injected into the container part 2 through the mouth part 3. In FIG. 1, although the container part 2 has a bottle shape, it can be made into another shape according to a bag shape or the contents.

At the time when the container 1 is manufactured, the mouth portion 3 is open. Therefore, it is necessary to keep the opening 4 covered until the contents are injected, and to prevent contamination with foreign bacteria and foreign matters. Further, it is necessary to prevent deformation of the container part 2 during transportation.
In the present invention, a method is adopted in which a synthetic resin film is welded to the surface of the mouth portion 3, the opening 4 is sealed with the synthetic resin film, and the medical container 1 is sealed. The welding method can be any of heat, ultrasonic, high frequency dielectric, and laser. Hereinafter, each method will be described. In addition, it is preferable that the material of a synthetic resin film is the same material as the mouth part 3, and a polypropylene or polyethylene is suitable.

FIG. 2 is a diagram showing a method of welding a film by heat welding. In the figure, the synthetic resin film 5 is disposed so as to cover the mouth portion 3. In order to increase the welding area, the mouth portion 3 has a flange 3 a, and the flange 3 a is fixed on the anvil 11. The heating element 10 has a protrusion 10a that can come into contact with the flange 3a, and the protrusion 10a has a shape along the flange 3a.
The protrusion 10a of the heating element 10 comes into contact with the film 5, and the film 5 starts to dissolve. Next, the flange 3a is also melted, and the film 5 and the flange 3a are welded. If the film 5 is appropriately cut after the end of the welding, the sealing is completed. If the winding device 12 and the roller 13 are provided, the film 5 can be sequentially supplied, so that the efficiency of film welding is improved. The heating element 10 can be heated by an electric heater or the like. It is also possible to cut the film 5 by providing the blade portion 15 and moving the blade portion 15 downward after the completion of welding.

FIG. 3 is a diagram showing a method of welding a film by ultrasonic vibration. Similar to FIG. 2, the synthetic resin film 5 is disposed so as to cover the mouth portion 3, and the flange 3 a is fixed on the anvil 11. The ultrasonic transducer | vibrator 20 has the protrusion 20a so that it can contact | abut to the flange 3a, and the protrusion 10a has a shape along the flange 3a. The ultrasonic vibrator 20 is a vibrator that generates longitudinal vibration (vibration of vertical reciprocation in the A direction in the figure) or torsion vibration (vibration of rotational reciprocation in the B direction in the figure), or a mixture of these vibrations. It is.
When the ultrasonic transducer 20 moves downward while being vibrated, the protrusion 20a comes into contact with the film 5, and the film 5 is vibrated while being pressurized. Friction occurs between the film 5 and the flange 3a, and frictional heat is generated. The film 5 and the flange 3a are melted by the frictional heat to be welded.

  The protrusion 20a can be one or a plurality of ring-shaped protrusions. In the case of vibration including torsional vibration, if the vibrator 20 has a blade portion, the film can be cut together with welding by the torsional vibration. Further, since the heat generation is local, it is possible to weld a relatively thin film.

  FIG. 4 is a diagram showing a method of welding a film by high frequency dielectric. A pair of electrodes 30 are arranged so as to tightly sandwich the film 5 and the flange 3a (for the sake of explanation, they are drawn at intervals in the figure), and a high frequency power source 31 is connected to the electrodes 30. Yes.

  When the high frequency current flows between the electrodes 30, the film 5 and the flange 3a are dielectrically heated due to the dielectric loss between the film 5 and the flange 3a. As a result, the film 5 and the flange 3a are melted to be welded. In this method, since heat generation is local, a relatively thin film can be welded. In addition, if the film 5 and the flange 3a are materials with a high dielectric loss, they can be welded efficiently. A frequency with a high dielectric loss can be selected to further increase the efficiency.

  FIG. 5 is a diagram showing a method of welding a film with a laser. In the figure, a laser beam 41 emitted from a laser oscillator 40 is changed in direction by an optical system 42 and irradiates the film 5 disposed on the flange 3a. The film 5 irradiated with the energy of the laser beam 41 is heated. At the same time, since the film 5 is transparent or translucent, a part of the laser beam 41 is transmitted and the flange 3a is also heated. As a result, since the film 5 and the flange 3a are melted, they are welded to each other. In this method, since heat generation is local, a relatively thin film can be welded. Note that the optical system 42 can scan the laser beam 41 along the flange 3a or change the width of laser irradiation. Further, if the laser light 41 is branched into a plurality of parts by a prism, a half mirror, a beam splitter, etc., the film can be welded to a plurality of containers at the same time, and the laser light is transmitted through the film 5. Since the contact portion with the flange 3a is directly heated, it can be satisfactorily welded even to a film having a thickness of 1 mm or more. In addition, also in the welding method shown in FIGS. 3-5, the film part 5 can also be cut | disconnected by providing the blade part 15 shown in FIG.

  The synthetic resin film used in the method according to the present invention may be a single layer or a multilayer, but can be easily opened by peeling if it is a multilayer film having two or more layers. The film does not remain or break. In particular, a multilayer film for easy peel (a multilayer film having easy peel properties) can be suitably used, and any type of film of cohesive peeling, delamination and interface peeling can be used. In addition, the multilayer film for easy peel can be suitably welded by the above-mentioned heat welding or ultrasonic welding.

  The medical container sealed by the above-described method has an opening at the mouth portion sealed with a synthetic resin film, so that the seal can be easily opened by peeling or dissolving, and there is a possibility that a piece of film may remain in the container. Absent.

  Furthermore, as shown in FIG. 6A, the mouth portion 3 has a flange 3a, and the surface of the inner peripheral portion 3b of the flange 3a forms a step portion 3d with respect to the surface of the outer peripheral portion 3c of the flange 3a. The synthetic resin film 5 is welded to the surface of the outer peripheral portion 3c of the flange 3a at the welded portion 16, and the opening 4 of the mouth portion 1 is sealed.

  In this case, when the seal opening method by dissolution shrinkage described later is adopted, as shown in FIG. 6B, the melt-shrinked film 5 remains on the step portion 3d, and the container is formed from the surface of the outer peripheral portion 3c of the flange 3a. 1 Does not protrude outward. As a result, welding of a synthetic resin film, a cap and the like performed after filling the contents becomes easy.

  In addition, it is preferable that the level | step difference of the surface of the outer peripheral part 3c of the flange 3a and the surface of the inner peripheral part 3b is 0.3-1.5 mm. When the thickness is less than 0.3 mm, the film 5 in which the stepped portion 3d is shrunk does not fit, which hinders re-sealing or cap welding performed after filling the contents. On the other hand, if it exceeds 1.5 mm, the thickness of the flange 3a is partially reduced, and the strength of the flange 3a may be reduced.

  Further, as shown in FIG. 6C, in heat welding, ultrasonic welding, or the like, a protrusion-like welding margin 17 is provided on the surface 3e of the flange 3a, and the welding margin 17 and the film 5 are welded to each other. In this case, as shown in FIG. 6 (d), the height of the protrusion of the welding margin 17 is set high so that a part of the welding margin 17 remains, and the remaining welding margin 17 and the flange surface 3e The part 3d can be configured. Even if the flange 3a is not provided with a step in advance, the step 3d is configured, so that the same effect can be obtained. Similarly, the step d is preferably 0.3 to 1.5 mm.

  When the thickness of the lip portion 3 is relatively thick, an outer peripheral portion and an inner peripheral portion can be provided to provide a lip portion provided with a step portion similar to the step portion 3d. Similarly, since the film which has been dissolved and shrunk at the time of opening remains in the stepped portion, the same effect can be obtained.

  Next, a method for opening the container sealed by the above-described method will be described. As already described, since the deposited film is thin, it can be opened by cutting or breaking, but there is a possibility that a piece of the film remains as a foreign substance. Therefore, it is preferable to open the film by dissolving and shrinking the film. In particular, a method of opening the synthetic resin film by dissolving and shrinking from the center is more preferable. The method will be described below.

  FIG. 7 is a diagram illustrating a method of opening the seal with hot air. In the figure, the hot air 50 sent from the outlet 51 of the hot air generator (not shown) is applied to the substantially central portion of the film 5 so that the hot air reaching the central portion of the synthetic resin film 5 is maximized. Yes. The hot air 50 starts the dissolution of the film 5, but at the same time, the film 5 contracts from the center of the film 5 to the edge of the mouth portion 3. As a result, the container 1 is opened. The hot air generating device may be a known device, such as a combination of a heating element such as an electric heater and a blowing device such as a fan.

  FIG. 8 is a diagram showing a method of opening the seal by radiant heat. In the figure, radiant heat 61 is emitted from a tunnel-shaped heating element 60. When the mouth portion 3 of the container 1 is passed through the heating element 60, the film 5 starts to melt due to the radiant heat 61, but at the same time, the film 5 contracts from the central portion of the film 5 to the edge portion of the mouth portion 3. As a result, the container 1 is opened. The heating element does not have to be in a tunnel shape, but may have an arbitrary shape such as a flat plate or a mountain shape.

  FIG. 9 is a diagram showing another method for opening the seal by radiant heat. In the figure, the distance between the central portion of the synthetic resin film 5 and the heat generating front end portion 62a is the shortest, and the distance between the peripheral portion of the synthetic resin film 5 and the heat generating peripheral portion 62b is relatively long. Radiant heat 61 is emitted from a heating element 62 having a heat generating tip 62a and a heat generating peripheral portion 62b that maximizes the amount of radiant heat that reaches. When the front end portion 62a is brought close to the substantially central portion of the film 5, dissolution starts from the central portion of the film 5 by the radiant heat 61, and at the same time, the film 5 contracts from the central portion of the film 5 to the edge portion of the mouth portion 3. As a result, the container 1 is opened, but since the film 5 is uniformly dissolved and contracted from the center of the film 5 toward the periphery, the container 1 can be opened efficiently.

  Further, since the distance between the central portion of the synthetic resin film 5 and the heat generating front end portion 62a is the shortest and the distance between the peripheral portion of the synthetic resin film 5 and the heat generating peripheral portion 62b is relatively long, the amount of radiant heat emitted to the film 5 Since the central part is the most uniform and is not uniform, the dissolution shrinkage does not spread to the surroundings, and the dissolved film does not fall and remain in the container 1. Of course, the mouth portion 3 preferably has a flange structure having the step portion 3d shown in FIG. Moreover, when the thickness of the mouth part 3 is thick, it is good also as a structure which provided the step part in the mouth part 3 without providing a flange.

  FIG. 10 is a diagram illustrating a method of opening a seal with a laser. In the figure, a laser beam 71 emitted from a laser oscillator 70 is changed in direction and spread by an optical system 42 and irradiates the substantially center of the film 5. The film 5 irradiated with the energy of the laser beam 71 is heated. At the same time, the film 5 contracts from the center of the film 5 to the edge of the mouth 3. As a result, the container 1 is opened. As in the case of welding, if the laser beam 71 is branched, a plurality of containers can be opened simultaneously.

  By flowing a high-frequency current around the metal body, the metal body generates heat by high-frequency dielectric as in the case of welding, and the film is dissolved and contracted by closing the heat-generating body, and the container is opened. In addition, as a method of using dielectric loss, a method of irradiating microwaves is possible. Since microwaves have a high frequency, they do not penetrate into the material, so only the surface is heated. In the case of the present invention, only a relatively thin film can be melted and shrunk to open the container.

  FIG. 11 is a diagram illustrating a method of opening a seal by electromagnetic induction. In the figure, a coil 81 is wound around a rod-shaped heating element 80. When a high frequency current is passed through the coil 81 by the high frequency power source 82, the heating element 80 is heated by electromagnetic induction. As a result, the container 1 is opened by the radiant heat from the heating element 80. The heating element 80 may be made of a metal such as iron or stainless steel or a magnetic material, and the shape may be other than a rod shape. Further, in order to suppress disconnection due to heat generation of the coil 81 itself, it is preferable to flow the cooling water in the coil 81. For example, a copper pipe or the like can be suitably used because of its good conductivity and thermal conductivity.

  FIG. 12 is a diagram illustrating a method of opening the seal from the notch. In the figure, a suction portion 90 such as a tube or a tube abuts on the substantially central portion of the film 5 to suck and hold the film 5. Then, the blade portion 91 cuts out the film 5 so as to be along the inner peripheral portion of the film 5. Even if the film 5 is cut out, the film 5 is held by the suction unit 90 and can be removed by the suction unit 90 and does not remain inside the container 1.

By the way, after injecting the contents into the container, it may be necessary to temporarily store it again. In such a case, first, the synthetic resin film is opened by any one of the above-described hot air, radiant heat, laser, high frequency dielectric, electromagnetic induction, notch, and peeling. Next, the container is filled with the contents, and the opening at the mouth is again welded with a synthetic resin film or cap by any one of the above-described thermal welding, ultrasonic vibration welding, high frequency dielectric welding, or laser welding. The method of filling the contents of the sealed medical container can be adopted, and the contents can be stored without contamination with foreign bacteria and foreign matters.

Claims (13)

In a medical container having a mouth portion, the opening of the mouth portion being sealed with a synthetic resin film,
The mouth portion has a flange, the inner peripheral surface of the flange forms a step with respect to the outer peripheral surface of the flange, and is disposed on the container lower side, and the outer peripheral surface of the flange and the synthetic resin film are welded together The opened synthetic resin film is melted and shrunk in the direction of the film surface from the central portion and opened, and the dissolved and shrunk synthetic resin film remains in the stepped portion . The method for opening a medical container according to claim 1, wherein a step between the outer peripheral surface of the flange and the inner peripheral surface of the flange is 0.3 to 1.5 mm . In a medical container having a mouth portion, the opening of the mouth portion being sealed with a synthetic resin film,
The synthetic resin film in which the inner peripheral surface of the mouth portion is arranged on the container lower side with a stepped portion with respect to the outer peripheral surface of the mouth portion, and the synthetic resin film is welded to the outer peripheral surface of the mouth portion. A method of opening a medical container in which a synthetic resin film which has been melted and shrunk in the film surface direction from the central part and opened and remains dissolved in the stepped part is opened. The distance between the central portion of the synthetic resin film and the heat generating tip is the shortest, the distance between the peripheral portion of the synthetic resin film and the heat generating peripheral portion is relatively long, and the amount of radiant heat reaching the central portion of the synthetic resin film is A heating element provided with a heating exothermic tip and a heating peripheral part that are maximized, the heating element is brought closer, and the synthetic resin film is melted and contracted from the central part by radiant heat from the heating element to be opened. 4. A method for opening a medical container according to 1 or 3 . The method for opening a medical container according to claim 1 or 3, wherein the synthetic resin film is dissolved and contracted from the central portion by a hot air means that maximizes the hot air reaching the central portion of the synthetic resin film . 2. A medical container having a mouth portion, wherein an opening portion of the mouth portion is sealed with a synthetic resin film, wherein the synthetic resin film is irradiated with laser light, and the synthetic resin film is melted and contracted to be opened. Or the opening method of the medical container of 3 . Has a mouth portion, the medical container opening is sealed by a synthetic resin film of the mouth portion, the high-frequency dielectric said synthetic resin film, according to claim 1 or 3, wherein the synthetic resin film is dissolved deflated to unseal To open a medical container. Has a mouth portion, the medical container opening is sealed by a synthetic resin film of the mouth portion, the synthetic resin film by electromagnetic induction, according to claim 1 or 3 to unseal the synthetic resin film by dissolving shrinkage way opening of the medical container described. By the method according to claim 1 or 3, the synthetic resin film sealing the opening of the mouth portion of the medical container is opened, and the medical container is filled with contents,
A method for filling the contents of a medical container, wherein a synthetic resin film or a cap is welded to the surface of the mouth part by ultrasonic vibration welding, and the opening part of the mouth part is sealed again . By the method according to claim 1 or 3, the synthetic resin film that seals the opening of the mouth portion of the medical container is opened, and the medical container is filled with contents,
A method for filling the contents of a medical container, wherein a synthetic resin film or a cap is welded to the surface of the mouth portion by high-frequency dielectric welding, and the opening portion of the mouth portion is sealed again. By the method according to claim 1 or 3, the synthetic resin film that seals the opening of the mouth portion of the medical container is opened, and the medical container is filled with contents,
A method for filling the contents of a medical container, wherein a synthetic resin film or a cap is welded to the surface of the mouth part by laser welding, and the opening part of the mouth part is sealed again. By the method according to claim 1 or 3, the synthetic resin film that seals the opening of the mouth portion of the medical container is opened,
Filling the medical container with contents,
A method for filling the contents of a medical container, wherein a synthetic resin film or a cap is welded to the surface of the mouth part by heat welding, and the opening part of the mouth part is sealed again. The method for filling contents of a medical container according to any one of claims 9 to 12, wherein the synthetic resin film is a multilayer film for two or more easy peels.

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