KR102690866B1 - Medical screw insertion guide - Google Patents

Abstract

In the medical screw insertion guide for inserting medical screws into an object, the medical screw insertion guide according to one embodiment includes a body portion provided with a screw insertion hole; a fixing part provided on one side of the body part to fix the body part to the object; and a screw insertion guide provided on the other side of the body, aligned with the screw insertion hole, and the screw insertion guide may be detachably connected to the body.

Description

Medical screw insertion guide {MEDICAL SCREW INSERTION GUIDE}

The embodiments below relate to a medical screw insertion guide.

Most pelvic fractures can be caused by high-energy injuries such as car accidents or falls. When spinal fractures are bonded with bone cement, the patient can get up and move around on the day of the procedure, whereas pelvic fractures require long-term bed rest. Most pelvic fractures can cause significant pain even when sitting or lying down. Severe pelvic fractures can result in life-threatening bleeding and can be accompanied by serious damage to other organs.

The hip joint, a joint that connects the pelvis and thighbone, supports body weight and enables leg movements such as walking and running, and has the widest range of motion among body joints after the shoulder joint, so hip fractures need to be actively treated as soon as they occur. .

Pelvic fractures, spine-pelvic fractures, and hip fractures require only painkillers for minor fractures, but for more severe fractures, external devices or surgically inserted plates and screws may be required to maintain pelvic stability. . Technology and research have been developed regarding treatment methods to maintain pelvic stability.

Korean Patent Publication No. 1837734 discloses a side rail raising and lowering structure for a medical bed.

The above-mentioned background technology is possessed or acquired by the inventor in the process of deriving the disclosure of the present application, and cannot necessarily be said to be known technology disclosed to the general public before the present application.

The purpose of one embodiment is to provide a medical screw insertion guide that guides easy screw insertion based on the application range of screw insertion angles that are universally applicable.

The purpose of one embodiment is to provide a medical screw insertion guide that can be customized to each patient using the anatomical specificity of the patient at a low cost by applying a 3D printing technique.

The purpose of one embodiment is to provide various types of medical screw insertion guides that can be manufactured and used according to the needs of the operator.

In the medical screw insertion guide for inserting medical screws into an object, the medical screw insertion guide according to one embodiment includes a body portion provided with a screw insertion hole; a fixing part provided on one side of the body part to fix the body part to the object; and a screw insertion guide provided on the other side of the body, aligned with the screw insertion hole, and the screw insertion guide may be detachably connected to the body.

According to one side, the screw insertion guide may have a cylindrical shape with a through hole through which the screw passes.

According to one side, a first protruding element accommodated in a first anatomical location of the object; and a second protruding element accommodated in the second anatomical location of the object, wherein the first protruding element or the second protruding element extends from one side of the body portion in a direction away from the screw insertion guide portion. can do.

According to one side, the body part may be made of a first material, and the screw insertion guide part may be made of a second material.

According to one side, the first material is made of a radiation-transparent material, and the second material is made of a radiation-non-transparent material, and the insertion direction of the screw may be predictable through a real-time radiation imaging device.

According to one side, one side of the body portion may be manufactured through 3D printing with a surface shape corresponding to the anatomical surface of the object.

According to one side, it may further include a connection part connecting the screw insertion guide part and one side of the body part.

According to one side, the connection part may be configured as one of sliding, click, and groove.

According to one side, the body portion may be manufactured by 3D printing using the first anatomical position or the second anatomical position as a reference point.

The medical screw insertion guide according to one embodiment can guide easy screw insertion based on the application range of the universally applicable screw insertion angle.

The medical screw insertion guide according to one embodiment can be customized to each patient using the anatomical specificity of the patient at a low cost by applying a 3D printing technique.

The medical screw insertion guide according to one embodiment may be manufactured and used according to the needs of the operator and may be provided in various forms.

1 schematically shows a front view of a medical screw insertion guide according to one embodiment.
2 shows in detail a portion of a medical screw insertion guide according to one embodiment.
Figure 3 shows a medical screw insertion guide according to one embodiment mounted on the pelvis.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. However, various changes may be made to the embodiments, so the scope of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents, or substitutes for the embodiments are included in the scope of rights.

The terms used in the examples are for descriptive purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the embodiments belong. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present application. No.

In addition, when describing with reference to the accompanying drawings, identical components will be assigned the same reference numerals regardless of the reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiments, if it is determined that detailed descriptions of related known technologies may unnecessarily obscure the gist of the embodiments, the detailed descriptions are omitted.

Additionally, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. When a component is described as being “connected,” “coupled,” or “connected” to another component, that component can be connected or connected directly to that other component, but there is no need for another component between each component. It should be understood that may be “connected,” “combined,” or “connected.”

Components included in one embodiment and components including common functions will be described using the same names in other embodiments. Unless stated to the contrary, the description given in one embodiment may be applied to other embodiments, and detailed description will be omitted to the extent of overlap.

The medical screw insertion guide 10 according to one embodiment is designed to insert medical screws such as S2-alar-iliac (S2AI) screws (hereinafter referred to as screws) and guide pins into the sacrum or iliac bone forming the pelvis. It can be inserted into the same object (P). Through the medical screw insertion guide 10 according to one embodiment, the S2AI screw can be inserted into the ilium through the bone tunnel within the sacrum to simultaneously connect the sacrum and ilium.

1 schematically shows a front view of a medical screw insertion guide 10 according to one embodiment. 2 shows in detail a portion of a medical screw insertion guide 10 according to one embodiment. Figure 3 shows the medical screw insertion guide 10 according to one embodiment mounted on the sacral surface of the pelvis (P).

Referring to FIGS. 1 and 2, the medical screw insertion guide 10 according to one embodiment includes a body portion 100 provided with a screw insertion hole 110, and is provided on one side of the body portion 100. It may include a fixing part 200 for fixing the part 100 to the object P, and a screw insertion guide part 300 provided on the other side of the body part 100 and aligned with the screw insertion hole 110. there is.

The screw insertion guide 300 may have a cylindrical shape with a through hole through which the screw passes. The cylindrical shape may have various diameters depending on the various diameters of the screw. For example, the screw insertion guide portion 300 may be a first screw insertion guide portion 301 for a guide pin for guiding the insertion of a guide pin, and may be formed in a cylindrical shape with a smaller diameter. Alternatively, the screw insertion guide 300 may be a second screw insertion guide 302 for the S2AI screw to guide the insertion of the S2AI screw, and may be formed in a cylindrical shape with a relatively large diameter.

Here, so that the screw to be inserted can be more easily inserted, a bone tunnel into which the screw is inserted can be formed in advance in the ilium.

The screw insertion guide 300 may be detachably connected to the body 100 by varying the angle so as to have a range of various insertion angles, such as 1-5°. Through the screw insertion guidance unit 300, the S2AI screw can be inserted at an optimal insertion angle into the object P, such as the pelvis, based on data described later.

For example, the allowable range of S2AI screw insertion obtained using 3D CT of the pelvis in normal Korean men and women is as follows. The acceptable coronal angle was 27.2~41.3° for men and 31.0~37.9° for women. Among them, the coronal angle with the widest range of transverse angles was 38.6° for men. °, the allowable transverse angle was found to be 34.4° for men and 37.2 to 49.8° for women, and the mid transverse angle at which the longest screw could be driven was found. The average was 39.3° for men and 43.5° for women. The most ideal sagittal angle obtained using the above coronal and transverse angles was found to be 27.1° for men and 28.2° for women. As above, the angle setting range of the screw insertion guide 300 can be applied based on the average insertion angle of the S2AI screw obtained through CT of the pelvis of normal Korean men and women with no abnormalities in the pelvis.

For example, the allowable angle for inserting a 75 mm long pelvic screw may be more than 10 degrees, and the sacro-pelvic joint angle may be 1 to 3 degrees when the patient is in the prone position during surgery. Considering that there may be movement, the screw insertion guide portion 300 and the body portion 100 are provided so that the insertion angle of the screw insertion guide portion 300 can be fixed by changing the angle when necessary on the body portion 100. ) may further include a connection part (not shown) connecting one side of the.

For example, the connection part is formed by sliding or clicking, so that the screw insertion guide 300 is easily connected to the screw insertion hole 110 of the body 100, and the insertion angle can be flexibly changed. Alternatively, grooves and protrusions may be implemented between the screw insertion hole 110 of the body portion 100 and the screw insertion guide portion 300, so that the connection angle can be changed. Through this connection, it is possible to flexibly respond to changes in the insertion angle of the screw insertion guide portion 300.

Referring to FIG. 2, one side of the body portion 100 of the medical screw insertion guide 10 according to one embodiment may be manufactured through 3D printing with a surface shape corresponding to the anatomical surface of the object P. . As an example, the bottom surface of the body portion 100 seated on the sacrum may be manufactured in a shape corresponding to the anatomical surface of the sacrum.

As such, the medical screw insertion guide 10 according to one embodiment is manufactured using the anatomical relationship of the pelvis P and the sacrum, which is an anatomical component of the pelvis P, and the three-dimensional surface shape of the anatomical structure. It can be stably seated on the pelvic (P) surface of each patient.

In addition, so that the medical screw insertion guide 10 according to one embodiment is well seated on the sacral surface of the pelvis P, 3 or 4 points are provided around the screw insertion hole 110 on the bottom of the body 100. A plurality of spikes may be implemented for . Alternatively, a donut-shaped metal may be surrounded around the screw insertion hole on the bottom surface of the body portion 100.

Referring to Figure 3, based on the 3D CT scan results and related studies of the pelvis (P) of a Korean (Asian) patient, the insertion points of the S2AI screw are S1 (sacral vertebra 1) and S2 (sacral 2). It may exist between the neural foramen of the first vertebral body, and the medical screw insertion guide 10 according to one embodiment may be fixed on the sacral surface through the fixing part 200 disposed on S1 and S2. there is.

The fixing part 200 of the medical screw insertion guide 10 according to one embodiment includes a first protruding element 210 accommodated in the first anatomical position S1 of the object P, and a first protruding element 210 of the object P. It may include a second protruding element 220 received at the second anatomical location S2, and the first protruding element 210 or the second protruding element 220 is screwed from one side of the body portion 100. It may extend in a direction away from the insertion guide portion 300. Here, as an example, the first anatomical location may be the neural foramen of S1, and the second anatomical location may be the neural foramen of S2, and the anatomical locations where the fixing unit 200 is seated are not limited thereto.

Referring to Figure 3, the medical screw insertion guide 10 according to one embodiment includes a first protruding element 210 seated in the S1 neural foramen on the sacral surface and a second protruding element seated in the S2 neural foramen on the sacral surface ( 220), it can be stably fixed on the sacral surface. Here, the screw insertion hole 110 of the body portion 100 may be provided between the first protruding element 210 and the second protruding element 220.

The medical screw insertion guide 10 according to one embodiment may be manufactured using a surface templating technique based on the three-dimensional shape of the anatomical surface of the sacrum. The surface template technique is a method that applies the three-dimensional curvature of the surface of the human vertebrae as a fixation point on the bottom surface of the screw insertion guide. Through this surface template technique, the medical screw insertion guide 10 according to one embodiment can be fixed on the sacral surface using only the right or left sacral surface. Accordingly, the medical screw insertion guide 10 can be formed in a left and right separate form, and there is no need to consider symmetrical points on the left and right sides of the pelvis P.

The body portion 100 of the medical screw insertion guide 10 according to one embodiment may be manufactured by 3D printing using the above-described first anatomical position or the second anatomical position as a reference point. As an example, the body portion 100 of the medical screw insertion guide 10 according to one embodiment may be manufactured by 3D printing using the neural foramen of S1 or the neural foramen of S2 as a reference point.

Additionally, the body portion 100 of the medical screw insertion guide 10 according to one embodiment may be manufactured by 3D printing using an anatomical position different from the first anatomical position or the second anatomical position as a reference point. As an example, considering the characteristics of the surface template technique fabrication based on the three-dimensional shape of the anatomical surface of the upper sacrum, medical screw insertion is performed by inserting the S2AI screw using the lamina or spinous process of the sacrum as a reference point. It is also possible to manufacture a guide (10). The reference point may be designated as single posterior arch, single spinous process, or simultaneous application of posterior arch and spinous process.

The medical screw insertion guide 10 according to one embodiment can be formed in the form of a plank by specifying the three-dimensional surface shape around S1 of the sacrum as if making a print, and can be manufactured using anatomical structures only on the left and right sides. You can.

Through the surface template technique of the medical screw insertion guide 10 according to one embodiment, the inconvenience of creating anchor points for the screw insertion guide on the left and right sides of the pelvis P can be avoided, and medical screws can be inserted in a separate left and right form. Through the guide 10, it is possible to reflect anatomical differences in the left and right pelvis (P) in humans.

The medical screw insertion guide 10 according to one embodiment can be manufactured using 3D printing technology using CT data, and the materials used at this time include plastic and metal (titanium, etc.), which are applied to 3D printing. Any possible material may be included.

The body portion 100 of the medical screw insertion guide 10 according to one embodiment may be made of a first material, and the screw insertion guide portion 300 may be made of a second material. Here, the first material may be a radiolucent material, and the second material may be a radio-opaque material, and the insertion direction of the screw may be predictable through a real-time radiological imaging device. .

For example, the body portion 100 may be made of plastic or PEEK, and the screw insertion guide may be made of titanium or stainless steel. Through this, a bone tunnel for a guide pin or S2AI screw is formed in the ilium, and when the guide pin or S2AI screw is inserted, the insertion path of the guide pin can be confirmed in real time on a real-time radiological imaging device such as a C-arm.

Hereinafter, the manufacturing process of the medical screw insertion guide 10 according to one embodiment will be described later.

The medical screw insertion guide 10 according to an embodiment uses the neural foramen of S1 or S2 as a reference point of the medical screw insertion guide 10 according to an embodiment, through simulation, to determine the anatomical surface shape of S1 or S2. The bottom surface of the body portion 100 is formed as a surface corresponding to the anatomical surface on the sacrum, and can be first manufactured using .

At this time, considering that the insertion point of the S2AI screw exists between the neural foramina of S1 and S2, the screw insertion hole 110 of the body portion 100 of the medical screw insertion guide 10 according to one embodiment is located on S1. It may be formed between the first protruding element 210 fixed to and the second protruding element 220 fixed to S2.

The medical screw insertion guide 10 according to the first manufactured embodiment may be manufactured using 3D printing technology using a 3D printing device.

Next, surgery to insert the S2AI screw can be performed by applying a medical screw insertion guide (10) tailored to each patient.

The medical screw insertion guide 10 according to one embodiment can be used when fixing the pelvis (P) with S2AI screws and can be manufactured using 3D printing using the average S2AI screw insertion angle obtained from normal Korean (Asian) men and women. there is.

The medical screw insertion guide 10 according to one embodiment can guide the insertion of screws with a universal angle and S2AI screws with an optimal insertion angle for each patient.

Through the medical screw insertion guide 10 according to one embodiment, during spine-pelvis fracture surgery, the incision line from the spine to the pelvis must be large and the soft tissue separation such as muscles attached to the pelvis must be wide, and the skin protrusion and The problem of direct connection between pelvic screws and spinal screws can be prevented.

Through the medical screw insertion guide 10 according to one embodiment, the effect of simultaneously fixing the sacrum and ilium, which are two anatomically different tissues, can be expected.

Through the medical screw insertion guide 10 according to one embodiment, the operator can directly check the bone tissue to be inserted when inserting the S2AI screw.

Through the medical screw insertion guide 10 according to one embodiment, appropriate or optimal insertion of the S2AI screw can be guided based on data on the recommended insertion point and insertion angle related to the insertion of the S2AI screw.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on the medium may be specially designed and configured for the embodiment or may be known and available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes optical media (magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

Software may include a computer program, code, instructions, or a combination of one or more of these, which may configure a processing unit to operate as desired, or may be processed independently or collectively. You can command the device. Software and/or data may be used on any type of machine, component, physical device, virtual equipment, computer storage medium or device to be interpreted by or to provide instructions or data to a processing device. , or may be permanently or temporarily embodied in a transmitted signal wave. Software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored on one or more computer-readable recording media.

Although the embodiments have been described with limited drawings as described above, those skilled in the art can apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or other components are used. Alternatively, appropriate results may be achieved even if substituted or substituted by an equivalent.

Therefore, other implementations, other embodiments, and equivalents of the claims also fall within the scope of the following claims.

10: Medical screw insertion guide
100: body part
110: Screw insertion hole
200: fixing part
210: first protruding element
220: Second protruding element
300: Screw insertion guide part
301: First screw insertion guide portion
302: Second screw insertion guide part
S1: Location of the neural foramen of the sacral 1st vertebral body.
S2: Location of the neural foramen of the sacral 2nd vertebral body.
P: object

Claims (9)

In the medical screw insertion guide for inserting medical screws into an object,
A body portion provided with a screw insertion hole;
a fixing part provided on one side of the body part to fix the body part to the object; and
a screw insertion guide provided on the other side of the body and aligned with the screw insertion hole;
Including,
The screw insertion guide is detachably connected to the body,
The screw insertion guide has a cylindrical shape with a through hole through which the screw passes,
The body portion is made of a first material, and the screw insertion guide portion is made of a second material,
The first material is made of a radiolucent material, and the second material is made of a radiopaque material, and the insertion direction of the screw is predictable through a real-time radiological imaging device.
Medical screw insertion guide.
delete According to paragraph 1,
The fixing part,
a first protruding element received at a first anatomical location of the object; and
a second protruding element received at a second anatomical location of the object;
Including,
The first protruding element or the second protruding element extends from one side of the body portion in a direction away from the screw insertion guide portion,
Medical screw insertion guide.
delete delete According to paragraph 3,
One side of the body portion is manufactured through 3D printing with a surface shape corresponding to the anatomical surface of the object,
Medical screw insertion guide.
According to paragraph 1,
Further comprising a connection portion connecting the screw insertion guide portion and one side of the body portion,
Medical screw insertion guide.
In clause 7,
The connection part consists of one of sliding, click, and groove,
Medical screw insertion guide.
According to clause 6,
The body portion is manufactured by 3D printing using the first anatomical position or the second anatomical position as a reference point,
Medical screw insertion guide.

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