KR20170086259A

KR20170086259A - Cage assembly for cervical spine

Info

Publication number: KR20170086259A
Application number: KR1020160005871A
Authority: KR
Inventors: 장성환; 안상국; 김윤근; 김영하; 유연춘
Original assignee: 주식회사 메타바이오메드
Priority date: 2016-01-18
Filing date: 2016-01-18
Publication date: 2017-07-26
Also published as: KR101807554B1; WO2017126788A1

Abstract

A screw is fixed to first and second vertebrae through a flexible cervical plate which can be deformed into a shape corresponding to the outer surface of the first vertebra and the second vertebra, And a fastener which can detachably attach the cervical plate with respect to the ribs of the cervical vertebra from the neck of the subject to prevent insertion of the cervical plate into the cervical vertebrae, And which does not need to shave the bones of the recipient during the procedure.

Description

[0001] CAGE ASSEMBLY FOR CERVICAL SPINE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cervical spine member assembly, and more particularly, to a cervical spine member assembly, which is used for preventing insertion of a complementary material inserted in a space in which a disk is removed, To a cervical spine shape assembly that does not require cutting off the bones of the cervical spine.

The cervical spine fixation device is intended to prevent separation of the hip joint placed between the upper and lower vertebrae and to prevent subsidence of each vertebra while supporting the upper and lower vertebrae.

Such cervical fixation devices are usually used for the treatment of degenerative disc disease in the neurosurgery and orthopedics areas and include spondylolisthesis, fracture, spinal stenosis (spinal stenosis) stenosis, malformation (ie, scoliosis, kyphosis, lordosis), tumor, pseudoarthrosis, and the like.

The present invention has been made in view of the above-mentioned viewpoints, and it is an object of the present invention to provide a method of manufacturing a high- (Hereinafter referred to as "Prior Art 3") of Patent Document 10 (Japanese Unexamined Patent Application Publication No. 10-0116331) and "Prior Art 3" of Patent Application No. 20-0305911 Quot; cervical spine fixation device "(hereinafter referred to as " prior art 5 ") of Patent No. 10-0620252, 6 '), and the "cervical spine fixation device" (hereinafter referred to as "prior art 7") of Patent No. 10-1415241.

However, in the prior art 1 and the prior art 2, it takes a lot of time to perform the procedure for fixing between the vertebral bodies because the number of parts is large and the number of parts is large and the assembly and fastening are difficult. Also, since the number of parts increases, .

The prior art 3 has a problem in that it is difficult to provide an accurate and reliable seat fixing position between the body corresponding to the plate and the protruding member corresponding to the cage and between the vertebral bodies having various body shapes and bone shapes.

Particularly, all of the prior arts 4 to 7, including the above-described prior art 3, have a protruding portion above the plate for fixing, so that the above-mentioned protruding portion touches the esophagus and airway of the patient positioned in front of the cervical vertebra, There is a disadvantage that it is inconvenient for each time when the operation of moving the door is performed.

Patent No. 10-1040515 Patent No. 10-1498013 Published Patent No. 10-2010-0116331 Registration No. 20-0305911 Registration No. 10-0620252 Patent No. 10-0974498 Patent No. 10-1415241

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a cervical vertebra member assembly which can prevent a bone fracture of a patient and can be widely applied to a physician having various body shapes and various shapes of bone structures .

And, the present invention is to provide a cervical spine-shaped member assembly which can prevent the complementary material from separating from the cervical vertebrae.

In addition, the present invention provides a cervical spine shape assembly that allows a surgeon to provide stable surgical results by eliminating the esophagus and the external protruding portion of the airway after the procedure.

According to an aspect of the present invention, there is provided a magnetic disk device comprising: A flexible cervical plate (hereinafter referred to as " first vertebral body ") which permits shape deformation corresponding to the outer shape of each of the vertebral bone (hereinafter referred to as 'first vertebra') and the adjacent vertebrae ; A fastener provided on the cervical plate for detachably coupling the cervical plate to the cervical plate; And a plurality of screws for fixing one side of the cervical plate to the first vertebra and for fixing the other side of the cervical vertebrae to the second vertebra, The cervical spine shape member assembly is disposed at a lower or the same position as the cervical spine shape member assembly.

The cervical plate includes a plate body forming a contact surface facing the outer surface of the first vertebra and the second vertebrae, at least one of the plate body and the plate body being inserted into the plate body, A first through hole through which the head is seated and fixed and a second through hole penetrating at least one of the other side of the plate body and into which the screw is inserted and the head of the screw is seated and fixed, And is formed in a central portion.

At this time, the first through hole and the second through hole have an upper inlet having a first diameter at a surface opposite to the contact surface, and a lower outlet narrowing to a second diameter smaller than the first diameter from the upper inlet And a through hole portion penetrating from the lower outlet to the contact surface, wherein the head portion of the screw is formed in a shape corresponding to the seat surface Is formed.

The cervical plate may further include a wing cutout portion formed to extend from one side edge of the plate body to the center of the plate body, the wing cutout portion being connected to one side edge of the plate body and the other side edge of the plate body.

The fastener includes: a cylindrical-shaped fastener protruding from a contact surface central portion facing the outer surfaces of the first and second vertebrae; and a connecting member extending from the end of the fastener member and having an outer diameter larger than that of the fastener The cervical plate according to any one of claims 1 to 3, wherein the cervical plate is fixed to the cervical plate, and the cervical plate is fixed to the cervical plate, A cervical spine assembly capable of restraining rotation about a shape.

The cervical vertebra member assembly includes a fixed stepped groove recessed at a predetermined depth from an upper end of the inner wall of the rear side of the bone fusion space to a lower end thereof,

A through hole formed in the fixed stepped groove and penetrating through the outer side surface on the rear side of the foot member, a fixed cutting surface formed in parallel on both sides of the engaging piece, parallel to each other, Wherein the fastening piece is inserted through the through hole and the fixed cutting surface is brought into close contact with a facing inner surface of the fixed stepped groove so that rotation of the cervical plate is restricted.

The engaging piece may include a disk-shaped thickness-forming portion extending from an end of the fastening piece, and a frusto-conical insertion guide portion gradually extending from the thickness-forming portion to a diameter of the fastening piece, And is formed on both sides of the insertion guide portion.

According to the present invention having the above-described configuration, the following effects can be achieved.

First, according to the present invention, a screw is fixed to each of first and second vertebrae through a flexible cervical plate that can be deformed into a shape corresponding to the outer surface of the first vertebra and the second vertebra, And a fastener capable of releasably coupling the cervical plate with respect to the boom-shape member inserted into the bone structure, thereby preventing damage to the bone of the subject and allowing a person having a variety of body shapes and various shapes of bone structures to cope with a wide range of operations .

Particularly, the present invention eliminates the need for a surgical procedure to cut out the outer surfaces of the first and second vertebrae corresponding to the contact surface of the cervical plate, so that it is possible to eliminate the bone damage itself of the subject, It is possible to provide a sense of security to the person who is to be treated and to provide a reliable operation result.

In addition, the present invention can remove the disc supporting between the first vertebra and the second vertebrae, and prevent the spare material inserted in the space from which the disc is removed from being separated from the first vertebrae and the second vertebrae.

In addition, the present invention can provide a structure for preventing the complementary material from being separated from the first and second vertebrae by a relatively simple structure while reducing the number of complicated and unnecessary parts, as compared with the prior art, It is possible to provide a highly reliable product by providing a stable operation result to the client by eliminating the external protrusion part which is caught by the esophagus and the airway.

1 (a) and 1 (b) are views showing the structure of a cervical spine member according to an embodiment of the present invention, wherein the cervical plate, which is a main part of the present invention, FIG. 1 (c) is a perspective view showing a state in which the cervical plate is bent, and the beam member and the screw are engaged. FIG.
FIG. 2 is a side conceptual view showing a state in which a cervical vertebra member assembly according to an embodiment of the present invention supports a first vertebra and a second vertebra.
FIG. 3 is a plan view showing the structure of a substantial part of a cervical spine member assembly according to an embodiment of the present invention. Referring to FIG.
4 and 5 show the overall coupling relationship of the cervical spine shape member assembly according to the embodiment of the present invention. Fig. 4 is an exploded perspective view showing the cervical plate as viewed from the contact surface side of the cervical plate, Is an exploded perspective view showing what is seen from the surface side of the cervical plate.
6 and 7 illustrate various embodiments of the first vertebra and the second vertebra using the cervical vertebra member assembly according to an embodiment of the present invention. FIG. 7 is a side elevational view showing that the cervical plate bending and fitting in accordance with the actual outside surfaces of the first and second vertebrae are fixed by screws .

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments described below, but may be embodied in various other forms.

The present embodiments are provided so that the disclosure of the present invention is thoroughly disclosed and that those skilled in the art will fully understand the scope of the present invention.

And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

In addition, throughout the specification, like reference numerals refer to like elements, and the terms (mentioned) used herein are intended to illustrate the embodiments and not to limit the invention.

In this specification, the singular forms include plural forms unless the context clearly dictates otherwise, and the constituents and acts referred to as " comprising (or having) " do not exclude the presence or addition of one or more other constituents and actions .

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs.

Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 (a) and 1 (b) show a cervical vertebra member assembly according to an embodiment of the present invention, in which the cervical plate 100, which is a main part of the present invention, 1 (c) is a perspective view showing a state in which the cervical plate 100 is coupled with the beam member 500 and the screw 200 in a state where the cervical plate 100 is bent It is a perspective view.

2 is a perspective view of a cervical spine shape assembly according to an embodiment of the present invention supporting a spine bone 410 (hereinafter referred to as a "first vertebral body") and a vertebra bone 420 FIG. 3 is a side conceptual diagram showing a completed state. FIG.

FIG. 3 is a plan view showing a structure of a beam member 500, which is a main part of a cervical beam member assembly according to an embodiment of the present invention.

4 and 5 show the overall coupling relationship of the cervical vertebra member assembly according to an embodiment of the present invention. FIG. 4 shows a view from the side of the contact surface 131 of the cervical plate 100, Fig. 5 is an exploded perspective view showing a view from the side of the surface 132 of the cervical plate 100. Fig.

6 and 7 illustrate various embodiments of the first vertebral body 410 and the second vertebral body 420 using the cervical vertebra member assembly according to an embodiment of the present invention, 7 is a side conceptual view showing that the cervical plate 100 is bent in correspondence with the movement of the vertebral body 410 and the second vertebral body 420. FIG 7 is a side elevational view showing the first vertebral body 410 and the second vertebral body 420, And the cervical plate 100, which is bent and fitted to the outer surface of the cervical plate 100, is fixed by the screw 200.

3, the reference symbol "f" indicates the direction in which the beam member 500 is inserted, and the reference symbol "Quot; r "indicates the rear side with respect to the direction in which the beam member 500 is inserted.

As shown in the drawing, the first and second vertebrae 410 and 410 are connected to each other through a flexible cervical plate 100 that can be deformed and attached to a shape corresponding to the outer surface of the first vertebrae 410 and the second vertebra 420, A fastener 300 for fastening the screw 200 to the first and second vertebrae 410 and 420 and detachably coupling the cervical plate 100 to the first and second vertebrae 410 and 420, As shown in FIG.

The first and second vertebrae 410 and 420 support the first and second vertebrae 410 and 420 so that the first vertebrae 500 are embedded in the second vertebra 420, (i.e., subsidence).

The cervical plate 100 is made of a flexible material that closely adheres to the outer shape of the first and second vertebrae 410 and 420 with respect to the outer shape of the first and second vertebrae 410 and 420.

The fastener 300 is provided on the cervical plate 100 to detachably connect the cervical plate 100 to the boom-shaped member 500.

The screw 200 is a plurality of members that fix one side of the cervical plate 100 to the first vertebral body 410 and fix the other side of the cervical vertebra 100 to the second vertebral body 420.

Since the upper surface of the head 220 of each of the plurality of screws 200 is disposed at a position lower or equal to the outer surface of the cervical plate 100, it is possible to prevent a foreign body caused by the esophagus of the subject, can do.

Accordingly, the present invention can prevent a bodily injury of a patient and can be widely applied to a physician having various body shapes and various shapes of bone structures.

In particular, the present invention eliminates the need for a surgical procedure to cut out the outer surfaces of the first and second vertebrae 410, 420 corresponding to the contact surface of the cervical plate 100, So that it is possible to provide a sense of security to the person to be treated and provide a reliable operation result.

In the present invention, the disc supporting the first vertebral body 410 and the second vertebra 420 is removed, and the first and second vertebrae 410, So that it can be prevented from being separated from between the vertebral bodies 420.

Further, the present invention provides a structure for preventing the beam member 500 from being separated from the first and second vertebrae 410 and 420 by a relatively simple structure while reducing the number of complicated and unnecessary parts as compared with the prior art In addition, it is possible to provide a highly reliable product, such as providing a stable operation result to a patient by eliminating an external protrusion part that is involved in the esophagus and airway after the operation.

It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention.

First, the cervical plate 100 is inserted from an opening (not shown) cut in the front of the neck of the subject.

Here, the cervical plate 100, the screw 200, the fastener 300, and the boom-shaped member 500 may all be made of a metallic material or a non-metallic material, and any of a bioabsorbable material and a bioabsorbable material may be used Do.

On the other hand, the beam member 500 has a structure in which the first and second notches 510 and 520 are formed on the upper and lower surfaces of the insertion body 530.

The insertion body 530 is provided with a bone union space 540 having an upper surface having an upwardly convex circular arc section and a lower surface having a concave circular arc section and penetrating the upper and lower portions in the middle.

The first notch 510 protrudes from the upper surface and is arranged in parallel from the front to the rear of the upper surface, and the second notch 520 protrudes from the lower surface and is disposed in parallel from the front to the rear of the lower surface.

The fastener 300 to be described later will be detachably coupled to the rear side edge of the union space 540, which will be described later in detail.

2, the lower surface of the insertion body 530 corresponds to the upper surface shape of the second vertebral body 420, and the lower surface of the insertion body 530 corresponds to the upper surface shape of the second vertebral body 420 So that they can be closely arranged.

At this time, both the front side edges and the rear side edges of the insertion body 530 are rounded as shown in FIG.

The first distance R1 from the circumference to the center of the first imaginary circle C1 extending both ends of the first arc a1 forming the front side edges is the second arc a2 forming the rear both side edges, (R2) from the circumference of the second imaginary circle (C2) extending from both ends of the first imaginary circle (C2) to the center of the second imaginary circle (C2).

The first distance R1 is formed longer than the second distance R2 because the front side edges of the insertion body 530 are formed to be rounder so that the first vertebral body 410 So that the insertion body 530 can be smoothly inserted between the second body 420 and the second body 420.

The first notch 510 is formed in a sawtooth shape upwardly inclined toward the rear side of the insertion body 530 and the second notch 520 is formed in a sawtooth shape inclined downward toward the rear side of the insertion body 530 The insertion body 530 disposed between the first and second vertebrae 410 and 420 is reliably engaged with the first and second vertebrae 410 and 420 without being separated from the first and second vertebrae 410 and 420 So that it can be maintained in a fixed seating state.

In addition, the insertion body 530 may further include a fixing step groove 550 and a through hole 560 for convenience of fastening and fixing the fastener 300 to be described later.

The fixed stepped groove 550 is recessed at a predetermined depth from the upper end of the inner wall of the rear side of the bone union space 540 to a predetermined depth. The through hole 560 is formed in the fixed stepped groove 550, And is penetrated through the lateral side surface.

Therefore, the fastener 300 to be described later is inserted through the through-hole 560, and the distal end of the fastener 300 is seated and fixed in the fastener groove 550, thereby restricting the rotation of the cervical plate 100.

Since the cervical plate 100 may be faced with a fatal problem that the cervical plate 100 is separated from the first and second vertebrae 410 and 420 when the cervical plate 100 is rotated with respect to the boom- The fixing stepped groove 550 is provided with a fastener 300 to be described later.

3 and 5, the insertion body 530 includes a reinforcing piece 570 extending from one side edge of the front side of the union space 540 and a lower surface extending from the upper surface to the lower surface of the reinforcing piece 570, And may further include an adjusting hole 580 formed therein.

The adjustment hole 580 is provided between the first vertebral body 410 and the second vertebral body 420 so that the insertion body 530 can be pivoted and adjusted in a certain range by holding the insertion body 530 at a predetermined position, (Not shown) is inserted into the adjustment hole 580, and the insertion body 530 is pushed or pushed by another surgical tool to adjust an accurate seating position. .

4 and 5, the cervical plate 100 can be understood as a structure formed by the first and second through holes 110 and 120 formed in the plate body 130.

The plate body 130 forms a contact surface 131 which faces the outer surfaces of the first and second vertebrae 410 and 420, respectively.

The first through hole 110 is inserted into at least one side of the plate body 130 so that the screw 200 is inserted and the head 220 of the screw 200 is seated and fixed.

At least one of the second through holes 120 is inserted into the other side of the plate body 130 so that the screw 200 is inserted and the head 220 of the screw 200 is seated and fixed.

The fastener 300 to be described later is formed at the center of the contact surface 131 of the plate body 130. [

Here, the plate body 130 has a generally rectangular flat plate shape, and the rectangular four corners of the plate body 130 are rounded so that the plate body 130 can be smoothly inserted into the opening.

Accordingly, the plate body 130 has four corners formed in a round shape, thereby preventing the user from being caught around the openings when the plate body 130 is inserted through the opening cut through the front of the subject's neck, You can do it.

The cervical plate 100 further includes a surgical tool (not shown) for performing an operation for adjusting an accurate seating position of the beam member 500 inserted between the first vertebral body 410 and the second vertebra 420, 140 may be formed on both sides of the fastener 300 with respect to the fastener 300 formed at the center of the plate body 130 so that the fastener 300 can be inserted therethrough.

The beam member 500 is provided with a pair of treatment holes 140 and 140 on the rear side wall of the bone union space 540 which is formed in the middle of the beam member 500 and corresponds to the treatment holes 140 and 140, 140 may be further provided with communication holes 541, 541 communicating with each other.

5, the first through hole 110 and the second through hole 120 may include the seating recesses 111 and 121 and the through holes 112 and 122, respectively.

The seating grooves 111 and 121 have upper and lower openings 111i and 121i having a first diameter D1 on a surface 132 opposite to the contact surface 131 and a second diameter 121r which are narrowed to a second diameter D2 which is smaller than the first diameter D1 of the upper entrance 111i and the lower exit 111u, 121s.

The through hole portions 112 and 122 penetrate from the lower outlets 111u and 121u to the contact surface 131.

Here, the head 220 of the screw 200 is formed in a shape corresponding to the seating surfaces 111s and 121s.

At this time, the screw 200 is screwed and fixed to the first body 410 and the second body 420, and is fixed to the screw body 210. The screw body 210 has a screw body 210 formed in the vertical direction along the outer peripheral surface, And a head 220 formed at the upper end of the body 210 corresponding to the seating surfaces 111s and 121s.

Needless to say, the head 220 needs to have tool grooves 220g each having a shape corresponding to the end of a surgical screw driver (not shown).

The cervical plate 100 includes a wing cutout portion 150 and a wing cutout portion 150 formed from both side edges of the plate body 130 connecting the one side edge of the plate body 130 and the other side edge of the plate body 130, 150 may be further provided.

The wing cutout portions 150 and 150 are provided to allow smooth deformation of the plate body 130 made of a flexible material having an elastic restoring force.

That is, the wing cutouts 150 and 150 can withstand the stress that the other side edge of the plate body 130 is twisted with respect to one side edge of the plate body 130 with respect to the center of the plate body 130, To maintain the durability of the entire plate body 130 while allowing a certain amount of the plate body 130 to be maintained.

4, the fastener 300 protrudes from the center of the contact surface 131 facing the outer surfaces of the first and second vertebrae 410 and 420, respectively, Shaped fastening piece 310 and a fastening piece 320 extending from the end of the fastening piece 310 and having an outer diameter larger than that of the fastening piece 310. [

Here, the fastening piece 310 operates integrally with the cervical plate 100, and the fastening piece 320 is caught by the inner side wall of the rear side of the bone union space 540 formed so as to pass through the center of the beam- So that the cervical plate 100 can be prevented from rotating with respect to the beam member 500.

At this time, the fastening tool 300 is cut and formed on both side surfaces of the fastening piece 320 together with the above-described fastening stepped groove 550 and the through hole 560, It is preferable to further include a fixed cutting surface 330 which is fixedly attached to the side surface.

The fastening piece 310 is inserted through the through hole 560 and the fixed cutting surface 330 is brought into close contact with the inner surface of the fixed stepped groove 550 facing the stepped groove 550 so that rotation of the cervical plate 100 is restricted.

The engaging piece 320 described above includes a disk-shaped thickness forming portion 321 extending from the distal end of the fastening piece 310 and a truncated conical insertion guiding portion 322 gradually extending from the thickness forming portion 321, (322). &Lt; / RTI >

Therefore, the fixed cutting surface 330 is formed on both sides of the thickness forming portion 321 and the insertion guide portion 322. [

The fixed cutting surface 330 is also parallel to the inner edge of the wing cutout portions 150, 150 formed by being cut inward from both side edges of the cervical plate 100.

The reason why the formation direction of the fixed cutting surface 330 is parallel to the inner edge of the wing cutouts 150 and 150 is that the operator can visually recognize the formation direction of the fixed cut surface 330 and the wing cutouts 150 and 150 It can be said that the insertion direction of the fastening tool 300 and the position where the fastening tool 300 is fixed to the beam member 500 are visually confirmed by a practitioner so as to be performed at a reliable and accurate position .

Accordingly, the present invention can provide the procedure results of the first and second vertebrae 410 and 420 to the subject, as well as the results of the procedures shown in FIGS. 6 and 7.

That is, according to the present invention, as shown in FIG. 6, when the cervical plate 100 is bent or the first vertebral body 410 and the second vertebral body 420 are bent corresponding to the movement of the first vertebrae 410 and the second vertebra 420, The cervical plate 100 may be bent so as to correspond to the shape of the cervical plate 100. The cervical plate 100 may be bent so as to correspond to the shape of the first vertebral body 410 and the second vertebral body 420, (100) is fixed by the screw (200), it is possible to increase the degree of freedom of the operation and to provide a reliable operation result to the patient.

As described above, according to the present invention, it is possible to prevent damage to the bones of a patient and to treat a person having various body shapes and various shapes of bone structures in a wide range of correspondence, to prevent separation of the bone material from the cervical vertebrae, It is understood that the basic technical idea is to provide a cervical spine member assembly that can provide stable results to the recipient by eliminating the external protrusion part which is caught by the esophagus and the airway of the recipient.

It will be apparent to those skilled in the art that many other modifications and applications are possible within the scope of the basic technical idea of the present invention.

100 ... cervical plate
110 ... 1st hole
111 ... seat groove
111i ... upper entrance
111s ... seat slope
111u ... Lower outlet
112 ... through hole portion
120 ... second through hole
121 ... seat groove
121i ... upper entrance
121s ... seat slope
121u ... Lower outlet
122 ... through hole portion
130 ... plate body
131 ... contact surface
132 ... surface
140, 140 ... Procedure
150. 150 ... wing incision
200 ... Screw
210 ... screw body
220 ... head
220g ... Tools Home
300 ... fastener
310 ... fastener
320 ... engaging piece
321 ... thickness forming portion
322 ... insertion guide portion
330 ... fixed cutting surface
410 ... vertebral bone, first vertebral body
420 ... the vertebrae 410 and the adjacent vertebrae, the second vertebra
500 ... beam shape material
510 ... 1st notch
520 ... second notch
530 ... insertion body
540 ... union space
541, 541 ... procedure communicating ball
550 ... fixed stepped groove
560 ... through hole
570 ... reinforcement piece
580 ... regulating hole
a1 ... first arc
a2 ... second arc
C1 ... 1st virtual circle
C2 ... second virtual circle
D1 ... first diameter
D2 ... second diameter
R1 ... 1st distance
R2 ... second distance

Claims

Beam to be inserted at the place where the disc is removed;
A flexible cervical plate (hereinafter referred to as " first vertebral body ") which permits shape deformation corresponding to the outer shape of each of the vertebral bone (hereinafter referred to as 'first vertebra') and the adjacent vertebrae ;
A fastener provided on the cervical plate for detachably coupling the cervical plate to the cervical plate; And
And a plurality of screws fixing one side of the cervical plate to the first vertebra and fixing the other side of the cervical plate to the second vertebra,
Wherein an upper surface of the head of each of the plurality of screws is disposed at a lower or equal position than an outer surface of the cervical plate.

The method according to claim 1,
The cervical plate includes:
A plate body forming a contact surface facing the outer surfaces of the first and second vertebrae,
A first through hole penetrating at least one side of the plate body to insert the screw and to fix the head of the screw in place,
And a second through hole penetrating at least one side of the plate body on the other side thereof, into which the screw is inserted and in which the head of the screw is seated and fixed,
Wherein the fastener is formed at the center of the contact surface of the plate body.

The method of claim 2,
Wherein the first through-hole and the second through-
An upper inlet having a first diameter at a surface opposite to the contact surface and a lower outlet narrowing from the upper inlet to a second diameter smaller than the first diameter, A seating groove portion for forming a seating surface of a shape,
And a through hole portion penetrating from the lower outlet to the contact surface,
Wherein the head of the screw is formed in a shape corresponding to the seat slope.

The method of claim 2,
The cervical plate includes:
Further comprising a wing cutout portion formed to extend from a side edge of the plate body to a central portion, the wing cutout portion connecting the one side edge of the plate body and the other edge of the plate body.

The method according to claim 1,
The fastener includes:
A cylindrical concave fastener projecting from a contact surface central portion facing the outer surfaces of the first and second vertebrae,
A fastening piece extending from an end of the fastening piece and having an outer diameter larger than that of the fastening piece,
Wherein the fastening piece operates integrally with the cervical plate,
Wherein the engaging piece is engaged with an inner side wall of a rear side of a bone union space formed so as to pass through the center of the base material so that the cervical plate can be prevented from rotating relative to the base material.

The method of claim 5,
Wherein the cervical spine member assembly comprises:
A fixed stepped groove recessed at a predetermined depth from an upper end of the inner side wall of the bone fusion space to a lower end thereof,
A through hole formed in the fixed stepped groove and penetrating through the outer side surface on the rear side of the base member,
Further comprising a fixed cutting surface formed on both sides of the engaging piece so as to be parallel to each other and closely fixed to the inner surface of the fixed stepped groove facing each other,
Wherein the fastening piece is inserted through the through hole and the fixed cutting surface is brought into close contact with a facing inner surface of the fixed stepped groove so that rotation of the cervical plate is restricted.

The method of claim 6,
The engaging piece
A disk-shaped thickness forming portion extending from an end of the fastening piece,
And a truncated cone-shaped insertion guide portion that gradually extends from the thickness-formed portion to have a smaller diameter,
Wherein the fixed cutting surface is formed on both sides of the thickness forming portion and the insertion guide portion.