KR100578710B1 - Transplanter for operate on spinal fusion - Google Patents

Abstract

The present invention relates to a spinal fusion procedure graft for maximizing the expansion width of the graft main body and further securing the internal space to promote fusion with bone after spinal fusion procedure.

In the above-described spinal fusion implant port configuration, irregularities are formed on the outer circumferential surface, and mutually opposite surfaces are formed with mutually communicating through-holes. Until the graft body formed in succession to the incision line; A bolt fastening hole penetrating a center of a rear end surface of the implantation port body and a lower center portion of the penetrating portion; A graft main body expansion tool inserted into the insertion hole so as not to protrude out of the graft main body, and having a penetration part having the same size and shape as the through part formed in the graft main body; It is installed to be connected to the lower end of the graft main body expansion port and coupled to the bolt fastening hole to move the graft main body extension as necessary to include a configuration that includes a bolt to expand the center of the incision line around the incision line Is done.

Spine, fusion, graft, spinal surgery

Description

Transplanter for operate on spinal fusion

1 is a perspective view of a implant for spinal fusion procedure of the first embodiment,

Figure 2 is a cross-sectional configuration of the implant port for spinal fusion procedure of the second embodiment,

Figure 3 is a cross-sectional configuration of the implant port for spinal fusion procedure of the conventional third embodiment,

Figure 4 is a perspective view of the implant for spinal fusion procedure of the first embodiment of the present invention,

Figure 5 is an exploded perspective view of the implant for spinal fusion procedure of the first embodiment of the present invention,

Figure 6a and Figure 6b is a functional view of the graft for spinal fusion procedure of the first embodiment of the present invention,

Figure 7 is a state of use of the implant for spinal fusion procedure of the first embodiment of the present invention,

Figure 8 is a perspective view of the implant for spinal fusion procedure of the second embodiment of the present invention,

Figure 9 is an exploded perspective view of the implant for spinal fusion procedure of the second embodiment of the present invention,

Figure 10a and Figure 10b is a graft operation diagram for spinal fusion procedure of the second embodiment of the present invention,

11 is a state of use of the implant for spinal fusion procedure of the second embodiment of the present invention,

※ Explanation of symbols about main part of drawing ※

10,10a: graft main body 11,11a: penetrating portion

12,12a: Unevenness 13,13a: Incision

14,14a: Bolted hole 15,15a: Insertion hole

20,20a: transplant body expansion mouth 21,21a: penetration

30,30a: Bolt 31,31a: Groove

B: Driver

The present invention relates to a spinal fusion implant, and more particularly, to simplify the structure of the spinal fusion procedure to facilitate the manufacture, as well as to maximize the expansion of the graft body, in particular, transplantation By securing the internal space of the bulbous body as much as possible, it is possible to sufficiently fill the fusion accelerator filled to promote the fusion with the bone after the spinal fusion procedure, thereby shortening the bone fusion period of the patient undergoing the procedure, thereby reducing the burden on the patient. To reduce it.

In the human body, a number of vertebrae (Body of spine) is connected by a disk to form an S-shaped curve, and one vertebra is composed of a cylindrical vertebra and a posterior arch at the back of the vertebra, and the posterior arch is a pair of A spinal canal is formed by a pedicle, an upper and lower articular joint extending to the pedicle, and a vertebral disc and a spinous process, and nerves are located through the spinal canal.

When the disc connecting the vertebrae deforms or ruptures and is displaced from the normal position, or when the joints formed by the lumbar spine are damaged or deformed, the vertebrae deform and displace from the normal position. It is known that pain is caused when external force is applied or compressed to nerves passing through the spinal canal for various reasons.

On the other hand, a part of the spine, particularly a patient with a damaged or damaged disc, is performed to fuse the spine using a spinal fusion implant instead of the corresponding disc. In addition, spinal fusion in the human body related to the loss of vertebral lordosis is usually performed by a bon bridging method through the disk space between adjacent vertebrae occupied by the vertebral disc.

The bridging method seen in the spinal fusion procedure forms a bore that penetrates the disk space between adjacent vertebral bodies, and inserts a vertebral fusion graft into the vertebral fusion graft and fuses the adjacent vertebral body with the vertebral fusion graft.

The conventional spinal fusion procedure implant 40 for spinal fusion in this manner is a continuous band form in which holes 41 are constantly formed while passing along the circumference, as shown in FIG. 1. Consists of the tip and the rear end is inserted into the spinal fusion implant 40, or a hole 42 for connecting the surgical driver to rotate the 90 ° or injecting bone material or fusion promoting material is formed. In particular, the front end portion of the spinal fusion graft 40 is wider than the rear end, so that after the completion of the implantation can be properly inserted in the front and rear intervals between the adjacent vertebrae can be positioned.

Such a conventional spinal fusion implant port 40 is made by laying the left and right width of the tip larger than the rear end to fit the front and rear spacing between adjacent vertebrae, and then inserted by lying 90 degrees, unnecessary by both protruding edges As a result, there is a problem in that a lot of bone is cut and damage to normal bone is caused, which causes a lot of burden on the patient, such as a significant delay in fusion of the bone.

And, in the case of the spinal fusion implant port 50 of FIG. 2, a cylindrical implant port body 51 having a tip end portion expandable, and a transplant port press body 56 which enables the tip end portion expansion of the implant port body and It is configured to include a graft spherical body 52 for fastening the graft cell pressurized body while being fastened to the inner side of the graft body, and a cap 53 which is combined with the rear part of the graft body and closes the rear part thereof. The surface of the graft main body has a plurality of holes 55 formed in the concave-convex 54 and a continuous wave pattern along the longitudinal direction, and a plurality of holes 57 are formed in the graft pressing body.

In addition, in the case of the spinal fusion implant port 60 of FIG. 3, a pair of the implanted port bodies 60 that are combined side by side facing each other through the pin coupling portion of the rear end and expandable using the front end portion penetrate the center. A graft support 62 having a screw hole 61 to support the rear end pin coupling portion of the graft main body, and a screw hole of the graft support to secure a fastening force for extending the tip of the graft main body. Providing a graft spherical body 63 and a link member 64 connected to the graft spherical body and a pair of graft bodies, respectively, and receiving a fastening force from the graft spherical body to spread out a pair of graft body bodies to the outside. Consists of the configuration.

The implantation port 50, 60 for spinal fusion procedure shown in Figs. 2 and 3 has a problem in that the structure is too complicated and difficult to manufacture and the manufacturing difficulty and manufacturing cost increase, and the transplant port body 51 ( Since the graft pressurizer 56 and the link member 64 are inserted into the inside of the 60, the internal space of the graft main bodies 51 and 60 is narrowed to facilitate the fusion with the bone after the spinal fusion procedure. There was a problem in that it does not sufficiently fill the fusion promoter filled for. Therefore, there is a problem that a lot of burden on the patient, such as significantly delayed the fusion period of bone.

The present invention has been made to solve the above problems in view of the above problems, the object of the first is to simplify the structure of the implant for spinal fusion procedure to solve the problems of manufacturing difficulties and manufacturing cost according to the conventional complex structure increases And secondly, maximizing the expansion of the graft body, and thirdly, securing the internal space of the graft body as much as possible to sufficiently fill the fusion accelerator filled to promote the fusion with bone after spinal fusion procedure. The present invention provides a spinal fusion implant that can shorten the bone fusion period of a patient and thereby reduce the burden on the patient.

In the spinal fusion procedure graft configuration of the present invention for achieving the above object, irregularities are formed on the outer circumferential surface and the sides facing each other are formed through the through-hole and the insertion hole is formed through the side formed with the through-hole A graft main body formed in succession from the top to the lower part;

A bolt fastening hole penetrating a center of a rear end surface of the implantation port body and a lower center portion of the penetrating portion;

A graft main body expansion tool inserted into the insertion hole so as not to protrude out of the graft main body, and having a penetration part having the same size and shape as the through part formed in the graft main body;

It is installed to be connected to the lower end of the graft main body expansion port and coupled to the bolt fastening hole to move the graft main body extension as necessary to include a configuration that includes a bolt to expand the center of the incision line around the incision line Is done.

In addition, the shape of the implanted main body having the irregularities formed on the outer circumferential surface is in the form of a tetrahedron of an arc-shaped hexahedron whose upper part is an arc, and the irregularities formed on the outer circumferential surface of the implanted main body have only a corresponding surface having a penetration formed thereon The form is sawtooth-shaped, and the cutting range of the incision line formed in the graft main body is formed to extend longer than the lowest end of the penetrating portion.

In addition, the shape of the implanted main body having the irregularities formed on the outer circumferential surface is a cylindrical shape having an upper surface arc-shaped, and the irregularities formed on the cylindrical shaped implanted main body are formed on the entire circumferential surface except the upper surface, the lower surface, and the penetrating portion. , The unevenness formed on the entire circumferential surface is a protruding band is formed at regular intervals, the material of the implant for spinal fusion procedure is selected from cobalt, chromium, stainless steel, titanium, plastic, ceramic.

When described in detail with reference to the accompanying drawings, the implant for spinal fusion procedure consisting of the above configuration as follows.

4 and 5 are a perspective view of the implant for spinal fusion procedure of the first embodiment of the present invention, Figure 5 is an exploded perspective view of the implant for spinal fusion procedure of the first embodiment of the present invention, as shown in the spinal fusion The implanted graft main body 10 has an uneven surface 12 formed on an outer circumferential surface thereof, and a surface 11 facing each other is formed with a through portion 11 therebetween, and an upper portion at the center of the other side of the surface on which the through portion 11 is formed. The incision line 13 which extends from a part to the lower part is formed.

The external shape of the implanted main body 10 formed as described above is in the form of a rectangular parallelepiped, that is, a quadrangular column, and the upper surface of the rectangular parallelepiped, that is, the quadrangular columnar shape, is formed in an arc shape. The reason is to facilitate the insertion when the implantation body 10 is inserted between the bones for spinal surgery.

In addition, the penetrating portion 11 of the graft main body 10 is formed to communicate with each other on the opposite sides of the side, for the reason, the fusion accelerator filled for promoting fusion with bone after spinal fusion procedure It is desirable to secure the space to the maximum in order to secure a space that can be sufficiently filled and also to help the bonding of the bone according to the internal growth of the bone.

In addition, the sawtooth concave-convex 12 is formed at the edges of both sides where the through part 11 is formed. The reason for forming the concave-convex 12 is that the implanted main body 10 between the bones for spinal surgery. When the implanted graft main body 10 is formed so as to be securely fixed without being moved between bones.

On the other hand, the side of the surface on which the uneven surface 12 is formed, that is, the insertion hole 15 is formed to pass through each other, the insertion hole 15 is formed to accommodate the implant body expansion opening 20 And inserting the implant body expansion port 20 is a safe and secure coupling is made.

However, since both outer widths and shapes of the graft main body expansion port 20 are formed to be the same as both outer widths and the shape of the graft main body 10, the insertion hole 15 of the graft main body 10 is formed. Inserting the graft main body extension 20 does not harm the rectangular parallelepiped that is the shape of the graft main body 10.

In addition, the penetrating portion 21 formed in the implantation body expansion port 20 and the penetrating portion 11 formed in the implantation body 10 have the same size and shape, so that the implantation portion 10 is implanted in the implantation body 10. When the spherical body extension 20 is combined, the penetrating portions 11 and 21 coincide with each other.

In addition, the incision line 13 formed in the implant body 10 extends up to a part of the lower body of the implant body 10 along the center of the arc surface and the imaginary line of the insertion hole 15. The reason for this is to secure the maximum amount of expansion of the transplanted main body (10).

In addition, a bolt fastening hole 14 is formed between the center of the bottom surface of the implanted main body 10 and the center of the lower surface of the penetrating portion 11 so that the bolt 30 is screwed to the tip of the bolt 30. Is penetrated through the end of the implant body expansion port 20 is installed. Therefore, when the bolt 30 is rotated, the implant body expansion port 20 expands around the incision line 13 of the implant body 10 while moving back and forth within the penetrating portion 11.

However, a groove 31 is formed at the rear end of the bolt 30 so as to couple the surgical driver so that the bolt 30 is rotated after the surgical driver is coupled thereto.

Referring to Figure 6a and 6b the operation of the spinal fusion procedure of the first embodiment of the present invention as described above is as follows.

First, as shown in FIG. 6A, the implant body expansion port 20 is inserted into the insertion hole 15 of the implant body 10, and the bolt 30 is coupled to the bolt fastening hole 14, and then the corresponding bone of the spinal cord. Insert between and bones, ie between adjacent trends. Then, when the screwdriver 30 is inserted into the groove 31 and the bolt 30 is rotated, the rotated bolt 30 moves forward as shown in FIG. 6B to expand the implanted body 10. The expansion is made by dividing the implant body 10 around the incision line 13 from the front.

As described above, when the graft main body 10 is dilated and expanded, the graft main body 10 is positioned as spaced apart as desired between the corresponding bones of the spinal cord, that is, the adjacent trend, as shown in FIG. When this is completed, the procedure driver (B) is separated from the groove 31 of the bolt 30, and then the fusion accelerator (bone conduction, bone induction, bone formation material) of the penetrating portion (11), (21) If you fill enough spinal cord surgery is complete.

The above description is for the spinal fusion procedure graft of the first embodiment of the present invention, the following description is for the spinal fusion procedure graft of the second embodiment of the present invention.

Figure 8 is a perspective view of the implant port for spinal fusion procedure of the second embodiment of the present invention, Figure 9 is an exploded perspective view of the implant port for spinal fusion procedure of the first embodiment of the present invention, as shown here The spherical body 10a has an uneven surface 12a formed on an outer circumferential surface thereof, and a surface facing each other is formed with a through portion 11a communicating with each other. The incision line 13a which continues until is formed.

The appearance of the transplanted main body 10a formed as described above is in the form of a cylinder, and the upper surface of the transplanted main body 10a in the form of a cylinder is formed in an arc shape. This is for facilitating the insertion when the implantation body 10a is inserted therebetween.

In addition, the penetrating portion (11a) of the graft main body (10a) is formed so as to communicate with each other on the mutually opposite sides, the reason is, the fusion accelerator filled for promoting fusion with bone after spinal fusion procedure It is desirable to secure the space to the maximum in order to secure a space that can be sufficiently filled and also to help the bonding of the bone according to the internal growth of the bone.

In addition, protruding strip-shaped irregularities 12a are formed at regular intervals at the edges of both sides where the penetration portions 11a are formed. The reason for the irregularities 12a is formed between the bones for spinal surgery. When the sphere body 10a is inserted, the inserted implant body 10a is formed so as to be securely fixed without being moved between bones.

On the other hand, the insertion hole (15a) is formed to penetrate each other on the side surface of the surface on which the uneven (12a) is formed, the other both sides, the insertion hole (15a) is formed to accommodate the implant body expansion opening (20a) Inserting the implant extension body (20a) is a safe and secure coupling is made.

However, since both outer widths and shapes of the graft main body expansion port 20a are formed to be the same as both outer widths and shapes of the graft main body 10a, the insertion hole 15a of the graft main body 10a is formed. Insertion of the graft main body extension 20a does not harm the cylindrical shape of the graft main body 10a.

In addition, the penetrating portion 21a formed in the graft main body extension 20a and the penetrating portion 11a formed in the graft main body 10a have the same size and shape, so that the penetrating portion 21a is transplanted into the graft main body 10a. When the spherical body extension 20a is combined, the penetrating portions 11a and 21a coincide with each other.

In addition, the incision line 13a formed in the implantation body 10a is a portion of the lower body of the implantation body 10a along the center of the arc surface, along both imaginary lines of the insertion hole 15a and the penetrating portion 11a. It extends to reach, because the reason is to ensure the maximum amount of expansion of the transplanted body (10a).

In addition, a bolt fastening hole 14a is formed between the center of the bottom surface of the implanted main body 10a and the center of the lower surface of the penetrating portion 11a to screw the bolt 30a thereon, and the tip of the bolt 30 Is penetrated through the end of the implant body expansion port 20a is installed. Therefore, when the bolt 30a is rotated, the implant body extension 20a extends around the incision line 13a of the implant body 10a while moving back and forth within the penetrating portion 11.

However, a groove 31a is formed at the rear end of the bolt 30a so as to couple the surgical driver B so that the bolt 30a is rotated after the surgical driver is coupled thereto.

The operation of the spinal fusion procedure implantation of the second embodiment of the present invention as described above with reference to FIGS. 10A and 10B is as follows.

First, as shown in FIG. 10A, the implantation port body extension port 20a is inserted into the insertion hole 15a of the implant port body 10a, and the bolt 30a is coupled to the bolt fastening hole 14a, and then the corresponding bone of the spinal cord. Insert between and bones, ie between adjacent trends. Then, when the screwdriver (B) is inserted into the groove 31a and the bolt 30a is rotated, the rotated bolt 30a moves forward as shown in FIG. 10B to expand the implanted body 10a. The expansion is made while the implant body 10a is about 4 minutes from the front about the incision line 13a.

As described above, when the graft main body 10a is expanded while being divided into 4 minutes, as shown in FIG. 11, a space between the corresponding bones and the bones of the spinal cord, ie, the adjacent trend, is set as spaced apart as desired. After the procedure is completed, the procedure driver B is separated from the groove 31a of the bolt 30a, and then the fusion accelerator (bone conductivity, bone induction, bone formation material) is formed in the through portions 11a and 21a. If you fill enough) spinal cord surgery is complete.

The implant for spinal fusion procedure of the first and second embodiments of the present invention is made of a material suitable for human transplantation, such as cobalt, chromium, stainless steel, titanium, plastic, ceramics, etc. Bone growth inducing materials, such as conductive, osteoinductive, bone forming materials or other fusion forming materials, may be filled or coated.

The implantation device for spinal fusion procedure of the present invention as described above, firstly, in order to secure the maximum amount of expansion of the graft main body, the incision is extended, and second, the internal space to fill the bone growth and bone fusion promoter To ensure maximum stability and rapid fusion of bones, improve bone growth and safety after the procedure, and ultimately help patients improve bone growth and safety after the procedure. In addition, the doctor has a psychological stability according to the ease of the procedure to have the effect that the spinal fusion procedure can proceed safely and efficiently.

Claims (7)

Unevenness is formed on the outer circumferential surface and the sides facing each other are formed through the through-holes and the insertion hole is formed in the side formed with the through-holes and the incision line is formed in succession from the upper part to the lower part and ; A bolt fastening hole penetrating a center of a rear end surface of the implantation port body and a lower center portion of the penetrating portion; A graft main body expansion tool inserted into the insertion hole so as not to protrude out of the graft main body, and having a penetration part having the same size and shape as the through part formed in the graft main body; Installed to be connected to the lower end of the graft main body expansion port and coupled to the bolt fastening hole to move the graft main body extension as necessary to include a configuration including a bolt to expand the center of the graft body around the incision line Characterized in the spinal fusion procedure graft. The implant of claim 1, wherein the shape of the graft main body having the irregularities formed on the outer circumferential surface thereof is in the form of a tetrahedron of an hexahedron having an upper arc shape. The implant of claim 1 or 2, wherein the irregularities formed on the outer circumferential surface of the graft main body are formed only on the corresponding surface on which the penetration portion is formed, and the irregularities are sawtooth-shaped. The method of claim 1, wherein the implantation range of the incision formed on the graft main body, the implant for spinal fusion procedure, characterized in that formed to extend longer than the bottom of the penetrating portion. The implant for spinal fusion procedure according to claim 1, wherein the shape of the graft main body having irregularities formed on the outer circumferential surface thereof is a cylindrical shape having an upper surface arc-shaped. The method of claim 5, wherein the irregularities formed on the cylindrical implant port body is formed on the entire circumferential surface except for the upper surface, the lower surface and the through portion, and the irregularities formed on the entire circumferential surface are formed with protrusion bands formed at regular intervals. The implant for spinal fusion procedure. According to claim 1, The material of the spinal fusion procedure is a spinal fusion procedure graft, characterized in that any one selected from cobalt, chromium, stainless steel, titanium, plastic, ceramic.

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