KR20190114345A - Apparatus for fixing a cervical spine having a clip use for fastening of screw - Google Patents

Abstract

The present invention relates to an apparatus for fixing the cervical spine. Insertion holes where a screw is inserted are perforated to a body and a long hole is formed in the body. A channel for forming a space unit moving a clip embedded in the long hole is formed in a plate. The clip consists of a connection unit and pressing units formed on both sides of the connection unit and hung to the upper side of a head of the screw.

Description

Applicator for fixing a cervical spine having a clip use for fastening of screw}

The present invention relates to a cervical vertebral fixation device, and more particularly, a plate having a channel formed therein, the insertion holes into which the screw is inserted are drilled in the body, the hole is formed in the body, and a space for moving the clip inserted into the hole. It is configured to include, and the clip is connected to the cervical vertebrae device, characterized in that formed in both sides of the connection portion and the pressing portion is mounted to the upper side of the head of the screw.

In general, orthopedic or neurosurgery in the treatment of cervical disc disease (cervical disc disease), cervical discs, cervical myelopathy, cervical fractures, etc. cervical fixation device consisting of a plate) and a screw to secure the plate to the cervical spine.

The procedure of the cervical fixation device is to incise the affected part from the front of the neck of the patient and expose the cervical spine to perform a procedure such as a cage for cervical spine on the affected part of the cervical spine, and then place the plate at the upper and lower part of the affected part. The screws are made in such a way as to fix the plate.

Then, by the fixing force of the screw of the cervical vertebrae fixing device and the supporting force of the plate, the procedure such as a cage (cage), etc., which is performed on the cervical spine, is fixed.

However, after the procedure, the screw may be released from the plate of the cervical vertebrae fixing device due to the activity of the patient, etc., thereby causing the phenomenon of retreating from the plate. In order to prevent such a phenomenon, techniques such as the cervical plate system of the Republic of Korea Patent Publication No. 10-2009-86387 (Notification Technology 1) and the cervical spine fixing device (Notification Technology 2) of the Republic of Korea Patent Publication No. 10-2005-11167 It is.

The known technique 1 is a configuration having a rotating element that is installed to be inserted into the hole of the screw on the plate of the cervical spine system, the known technique 2 is the head of the fixing screw between the fixing screw insertion hole formed on the plate It is a structure that installs the fastening head fixing member.

However, the screw is inserted into the plate at various angles according to the shape of the cervical spine or the condition of the cervical vertebrae fixing device, and the known techniques are difficult to insert the rotating element into the screw inserted at various angles ( Known technology 1), a problem that the fixing member is hardly caught on the head of the fixing screw (notice 2) may occur, such a problem not only makes the procedure more difficult and complicated, but also leads to an increase in the procedure time.

In addition, the cervical vertebrae fixing device should remove the cervical vertebrae fixing device in case of failure of the device such as breakage of the plate, loosening of the screw, and detachment of the graft after the procedure, in which case it is not easy to remove the screw fixed on the plate. It's acting as a tricky cause.

Meanwhile, other prior arts of the conventional cervical vertebral fixers as described above include the cervical vertebral fixer of Korean Patent Application No. 10-2009-78763, the cervical vertebral fixer of Korean Patent Application No. 10-2015-161260, and the cervical vertebra of US 6,669,700. Although a fixed system is known, it is not enough to solve the conventional problems as described above.

The present invention was devised to solve the conventional problems as described above, it is possible to easily insert the screw during the procedure of the cervical spine fixing device, reduce the procedure time to facilitate the patient's recovery, plate SUMMARY OF THE INVENTION There is a technical problem of the present invention to provide a configuration of a cervical vertebral fixation device that can easily perform removal of a screw inserted into it.

The configuration of the cervical vertebrae fixing device having a screw fastening clip of the present invention for achieving the technical problem as described above, the insertion hole is inserted into the screw is inserted into the body, the hole is formed in the body, the clip inserted into the long hole It is configured to include a plate formed with a channel forming a space for moving, wherein the clip is connected to the cervical vertebrae device, characterized in that consisting of a connecting portion and the pressing portion is formed on both sides of the connecting portion is mounted to the upper side of the head of the screw. .

The cervical vertebrae fixing device having a screw fastening clip of the present invention having the configuration as described above is because the pressing piece of the clip presses the head of the screw from the upper side when the screw is inserted, so that the screw is firmly coupled to the plate to prevent the detachment of the screw When removing the screw, press the boss portion of the clip holding the screw in the long hole direction, the clip is moved to release the pressing piece that was pressing the screw to easily remove the screw.

In addition, the shaft fixing device of the present invention is fixed by the clip pulled apart by its own tension from the top to close the head portion of the screw, so that the structure is simple but the operation of the device is surely made retreat conventional screw In addition to improving the shortcomings of using a complicated and larger number of parts in order to prevent the problem, it is a very advanced invention that has the effect of reducing the manufacturing cost of the cervical vertebra and fixing the possibility of malfunction.

1 is a perspective view of the cervical spine fixing device of the present invention,
Figure 2 is a perspective view of the plate of the cervical spine fixing device of the present invention,
Figure 3 is a detailed view of the plate of the cervical spine fixing device of the present invention, Figure 3a is a front view, Figure 3b is a rear view, Figure 3c is a rear perspective view, Figure 3d is a clip coupled state rear view, Figure 3e is a AA of Figure 3a 'FIG. 3D is a cross-sectional view taken along line BB of FIG. 3B.
Figures 4a and 4b is a perspective view and operating state of the clip of the cervical spine fixing device of the present invention,
5 is a front view of the screw engagement state of the cervical spine fixing device of the present invention,
6 is an operating state when screwing the cervical vertebrae fixing device of the present invention,
Figure 7 is a state diagram when the screw removal of the cervical spine fixing device of the present invention.

Hereinafter, with reference to the drawings will be described in detail the configuration of the cervical spine fixing device having a screw fastening clip of the present invention.

However, the disclosed drawings are provided as examples to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the invention is not limited to the drawings presented below, but may be embodied in other aspects.

In addition, unless there is another definition in the terminology used in the present specification, it has the meaning commonly understood by a person of ordinary skill in the art to which the present invention belongs, and the gist of the present invention in the following description and the accompanying drawings. Detailed descriptions of well-known functions and configurations that may be unnecessarily blurred are omitted.

1 is a perspective view of the cervical spine fixing device of the present invention.

Referring to FIG. 1, the cervical spine fixing device of the present invention includes a plate-shaped plate 10 made of a rigid metal material such as titanium or a polymer material such as polyether ether ketone (PEEK). .

The shape of the body 11 of the plate 10 is a rectangular shape, each corner portion is formed into a curved surface, the insertion hole 13 is inserted into the screw 100 for fixing the plate 10 to the cervical spine inside each corner. Are each drilled into the body 11 of the plate 10.

Although six insertion holes 13 are shown in the figure, the accommodation grooves can be adjusted to four, eight or more depending on the level of fixation of the cervical fixation procedure.

In addition, a first long hole 12a and a second long hole 12b penetrating the body 11 are formed at upper and lower ends of the body 11, and specifically, the insertion hole 13 located above the body 11. And a first long hole 12a and a second long hole 12b are formed between the insertion hole 13 located at the center and the insertion hole 13 located at the center of the body 11 and the insertion hole 13 located at the bottom of the body, respectively. .

The screw 100 is a conventional cervical fixation screw including an upper head 101 and a screw body 102 extending downward from the head 101 to form a thread (not shown).

Hereinafter, the configuration of the plate 10 and the clip 20 inserted into the plate 10 of the cervical vertebrae fixing device 1 of the present invention made as described above in more detail.

Figure 2 is a perspective view of the plate of the cervical vertebrae fixing device of the present invention, Figure 3 is a detailed view of the plate of the cervical vertebrae fixing device of the present invention, Figure 3a is a front view, Figure 3b is a rear view, Figure 3c is a rear perspective view, Figure 3d Fig. 3E is a sectional view taken along the line AA 'of Fig. 3A, and Fig. 3D is a sectional view taken along the line BB' of Fig. 3B.

First, referring to the perspective view of FIG. 2 and the front view of FIG. 3A, the plate 10 has a space for pressing the clip 20 downward to remove the clip 20 inserted into the body 11 to be described later. The upper channel 14a, the central channel 14b, and the lower channel 14c forming the portion are respectively located above the first long hole 12a, between the first long hole 12a and the second long hole 12b, and It is formed below the 2nd long hole 12b, respectively.

In this case, as shown in the rear view of FIG. 3B and the rear perspective view of FIG. 3C, the upper channel 14a and the first long hole 12a are opened to communicate with each other on the rear surface of the plate 10 so as to communicate with the opening. The clip 20 enters and exits.

In addition, the rear surface of the plate 10 is opened so that the central channel 14b, the lower channel 14c, and the second long hole 12b communicate with each other, so that the clip 20 can enter and exit through the communicated opening.

3D shows a state in which the clip 20 is coupled to the plate 10.

At this time, the clip 20 is an upper portion through which the engaging portion 22 of the clip 20 can be inserted into the body 11 of the plate 10, as shown in the AA 'line cross-sectional view shown in Figure 3e. The through hole 15a, the central through hole 15b and the lower through hole 15c are respectively drilled.

Figures 4a and 4b is a perspective view and an operating state of the clip of the cervical spine fixing device of the present invention.

Referring to each of the drawings, the clip 20 of the cervical spine fixing device of the present invention is a component for fixing the screw 100 is inserted into the insertion hole 13 is inserted into the plate 10.

The clip 20 is composed of a connecting portion 21 in the center and a locking portion 22 formed on both sides of the connecting portion 21, respectively, and is a flat member having a predetermined width and length.

The connecting portion 21 is formed with a boss (23) protruding perpendicular to the upper end, the locking portion 22 is bent at the end of the connecting portion 21, the base piece 24 extending upwards And a pressing piece 25 extending upward from the base piece 24 to press the head 101 of the screw 100. The pressing piece 25 forms a stepped surface 25a that protrudes outward from the base piece 24.

As illustrated in FIG. 4B, the engaging portion 22 of the clip 20, which is configured as described above, performs a kind of leaf spring function in which the base piece 24 is rotated in the left and right direction with respect to the connecting portion 21. do.

It describes the operation of the cervical vertebrae fixing device of the present invention configured as described above.

Figure 5 is a front view of the screw coupling state of the cervical fixing device of the present invention, Figure 6 is an operating state when the screw coupling of the cervical fixing device of the present invention, Figure 7 is a state diagram of the screw removal of the cervical fixing device of the present invention.

first. As shown in FIG. 1, when the screw 100 is inserted into each insertion hole 13 of the plate 10, the coupling state as shown in FIG. 5 is achieved.

At this time, the screw 100 is firmly coupled to the plate 10 while the pressing piece 25 of the clip 20 presses the upper portion of the head 101 of the screw inserted into the insertion part 13.

Referring to the coupling process of the screw 100, as shown in Figure 6, when the screw 100 enters downward through the insertion hole 13, the body 102 and the head 101 of the screw 100 By this portion, the base piece 24 of the clip 20 is pushed toward the upper channel 14a inward, and in this state, when the screw 100 is completely inserted into the insertion hole 101, the head 101 passes through the head 101. As the base piece 24 of the clip 20 is returned to the outside, the pressing piece 25 is positioned on the top of the head 101 and the screw 100 is fixed on the plate 10 while pressing the head 101. To be combined.

When removing the screw 100 coupled to the plate 10 in such a state, first, the boss 23 portion of the clip 20 is downwardly directed in the direction of the first long hole 12a and the second long hole 12b. When the clip coupled to the lower part in the drawing pushes the boss 23 upwards, the base piece 24 of the clip 20 is moved while the connecting portion 21 of the clip 20 is moved in the direction of each long hole 12a, 12b. ) Is pushed toward the inner upper channel 14a, so that the pressing piece 25 escapes the upper through hole 15a, the central through hole 15b and the lower through hole 15c formed in the body 11 of the plate 10. Subsequently, when the lowering of the connecting portion 21 continues, the boss 23 of the clip 20 is caught at the end of each channel 14a, 14b, 14c, and the movement of the clip 20 is stopped. The pressure that presses the head 101 of the screw is released while the pressing piece 25 of the) leaves the insertion hole 13. In this state, the screw 100 may be removed from the insertion hole 13 using a dedicated tool.

Therefore, the cervical vertebrae fixing device of the present invention operated as described above, the screw 100 is pressed on the plate 10 because the pressing piece 25 of the clip 20 presses the head 101 of the screw upward when the screw is inserted. While firmly coupled to prevent the detachment of the screw 100, when removing the screw is pressed in the direction of the long hole (12a, 12b) of the boss 23 of the clip (20) fixing the screw 100 The clip 20 is moved to release the pressing piece 25 which has been pressing the screw 100 so that the screw 100 can be easily removed. Thus, the firm coupling and removal of the screw 100 has obtained the advantage of being very easy.

In the above description, the configuration and operation of the cervical vertebrae fixing device of the present invention have been described in detail with reference to the accompanying drawings, but the present invention can be variously modified, changed, and replaced by those skilled in the art, and such modifications, changes, and substitutions may be made by the present invention. It should be interpreted as falling within the protection scope of.

Explanation of symbols on the main parts of the drawings
10; plate
11; Body
12a; Chapter 1
12b: Chapter 2
13; Screw slot
14a; Upper channel
14b; Center channel
14c; Lower channel
15a; Upper through
15b; Central through
15c; Lower through hole
20; Clip
21; Connection
22; Hang
23; boss
24; Base
25; Pushing
25a; Step surface
100; screw
101; head
102; Body

Claims (6)

In the cervical spine device,
Insert holes 13 into which the screw 100 is inserted are drilled in the body 11, and a hole is formed in the body 11, and a plate is formed in which a channel is formed to form a space for moving the clip 20 inserted into the hole. 10, including
The clip 20 is formed on both sides of the connecting portion 21 and the connecting portion 21 is composed of the engaging portion 22 is mounted to the upper side of the head 101 of the screw 100 is inserted into the insertion hole 13 Cervical vertebrae device, characterized in that for fixing (100).
The method of claim 1, wherein the clip 20,
The connecting portion 21 is formed with a boss 23 protruding perpendicular to the upper end,
The locking portion 22 is bent at the end of the connecting portion 21, the base piece 24 extending upward, and extending upward from the base piece 24 to press the head 101 of the screw 100 Cervical spinal device characterized in that the configuration consisting of a pressing piece (25).
3. The cervical spine fixing device according to claim 2, wherein the pressing piece (25) forms a stepped surface (25a) protruding outward from the base piece (24).
The method of claim 3, wherein the long hole,
The first long hole between the insertion hole 13 located in the upper part of the body 11 and the insertion hole 13 located in the center, and between the insertion hole 13 located in the center of the body 11 and the insertion hole 13 located in the lower part of the body 11 12a) and the second long hole 12b are formed,
The channel is,
An upper channel 14a formed on the upper side of the first long hole 12a, a central channel 14b formed between the first long hole 12a and the second long hole 12b, and the second long hole 12b. Cervical vertebrae device characterized in that the configuration consisting of a lower channel (14c) formed on the lower side.
The method of claim 4, wherein
The upper channel 14a and the first long hole 12a are opened to communicate with each other on the rear surface of the plate 10, and the clip 20 enters and exits through the communicated opening.
The rear surface of the plate 10 is opened so that the central channel 14b, the lower channel 14c, and the second long hole 12b communicate with each other, so that the clip 20 enters and exits through the communicated opening. Cervical vertebrae device.
The method of claim 4, wherein
The upper through hole 15a, the central through hole 15b and the lower through hole 15c, through which the engaging portion 22 of the clip 20 can be inserted into the body 11 of the plate 10, are respectively drilled. Cervical vertebrae fixation device.

Images