CN210408685U

CN210408685U - Endoscopic lower anchoring type intervertebral fusion device between lumbar vertebral plates

Info

Publication number: CN210408685U
Application number: CN201920782214.7U
Authority: CN
Inventors: 罗小波; 薛海滨; 李金龙; 隰建成; 才晓军
Original assignee: 8th Medical Center of PLA General Hospital
Current assignee: 8th Medical Center of PLA General Hospital
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-04-28
Anticipated expiration: 2029-05-28

Abstract

The utility model discloses an anchor formula interbody fusion cage under scope between lumbar vertebrae intervertebral board relates to medical instrument technical field, and it includes that the awl fuses the ware body between, fuse the equal fixedly connected with fixed plate in both sides around ware body upper surface and the lower surface between the awl, the upper surface of fixed plate is provided with a plurality of barb. This anchor formula interbody fusion cage under scope between lumbar vertebrae intervertebral disc, through the fixed plate, first through-hole, the second through-hole, the internal thread, mutually supporting of threaded rod and barb, after two centrums are implanted to the fusion cage body between the awl, medical staff can the rotatory threaded rod, the threaded rod can drive the threaded rod and move right under the effect of internal thread in rotation, the threaded rod moves right and drives the extrusion piece and move right, just can make the slight upwards removal of upper surface of fixed plate, thereby can adjust the position of barb, the centrum about messenger's barb can hook tightly, thereby can avoid the condition that the fusion cage body drops from the centrum between the awl.

Description

Endoscopic lower anchoring type intervertebral fusion device between lumbar vertebral plates

Technical Field

The utility model relates to the technical field of medical equipment, specifically a lumbar vertebrae intervertebral scope is anchor formula interbody fusion cage down.

Background

The method of treatment intervertebral disc degeneration utilizes interbody fusion art usually, interbody fusion art's principle is the interbody with interbody fusion cage utilization operation implantation patient's intervertebral for strut and lead the distance between the centrum, it is in the same place to make last interbody fusion together at last, it is more firm to make the intervertebral space, present interbody fusion cage all can set up the barb structure in order to prevent to make the condition that the fusion cage takes place to shift along with the lapse of time, but the position of barb can not finely tune, and the height is inconsistent between the centrum, the centrum about barb on the interbody fusion cage of implantation is difficult to the hook, still appear the phenomenon that the fusion cage drops from the centrum easily, can not satisfy people's user demand.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides an anchor formula interbody fusion cage under scope between lumbar vertebrae vertebral plate has solved present interbody fusion cage and can all set up the barb structure in order to prevent that the condition that makes the fusion cage take place to shift along with the lapse of time, but the position of barb can not finely tune, and high nonconformity between the centrum, barb on the interbody fusion cage of implantation is difficult to hook closely upper and lower centrum, still appears the problem of the phenomenon that the fusion cage drops from the centrum easily.

(II) technical scheme

In order to achieve the above purpose, the utility model adopts the technical proposal that: the utility model provides an anchor formula interbody fusion cage under scope between lumbar vertebrae intervertebral disc, fuses the ware body between the awl, fuse the equal fixedly connected with fixed plate in both sides around ware body upper surface and the lower surface between the awl, the upper surface of fixed plate is provided with a plurality of barb, first through-hole has been seted up to the right flank of fixed plate, the inner wall of first through-hole is provided with the internal thread, internal thread and threaded rod surface threaded connection, the left end of threaded rod passes the second through-hole that the fixed plate left surface was seted up and extends to the left side of fixed plate.

The device is characterized in that an extrusion block is arranged in the first through hole, the left side face of the extrusion block is in lap joint with the right end of the threaded rod, threaded holes are formed in the upper side face and the lower side face of the interbone fusion device body, and screws are connected with the threaded holes in an internal thread mode.

Preferably, the barb is saw-toothed in shape, and the barb is arranged obliquely.

Preferably, the shape of the extrusion block is a trapezoid, and the shape of the first through hole is a trapezoid.

Preferably, the left end of the threaded rod is fixedly connected with a stop block, and the diameter of the stop block is larger than that of the threaded rod.

(III) advantageous effects

The beneficial effects of the utility model reside in that:

1. this anchor formula interbody fusion cage under scope between lumbar vertebrae intervertebral disc, through the fixed plate, first through-hole, the second through-hole, the internal thread, mutually supporting of threaded rod and barb, after two centrums are implanted to the fusion cage body between the awl, medical staff can the rotatory threaded rod, the threaded rod can drive the threaded rod and move right under the effect of internal thread in rotation, the threaded rod moves right and drives the extrusion piece and move right, just can make the slight upwards removal of upper surface of fixed plate, thereby can adjust the position of barb, the centrum about messenger's barb can hook tightly, thereby can avoid the condition that the fusion cage body drops from the centrum between the awl.

2. This anchor formula interbody fusion cage under scope between lumbar vertebrae intervertebral, through setting up screw hole and screw, after two internal vertebras about the body of fusion cage was implanted between the awl, the screw can be fixed in upper and lower vertebra, can make the more stability of fusion cage body when fixed between the awl, through the shape that sets up extrusion piece and first through-hole, can make the upper surface of fixed plate take place deformation when extrusion piece moves right to the position that makes the barb is adjusted.

3. This anchor formula interbody fusion cage under scope between lumbar vertebrae intervertebral, through setting up the barb, after two centrums are implanted to the fusion cage body between the awl, two centrums can be hooked up to the barb to can avoid the condition that the fusion cage body takes place to shift between the awl, through setting up the dog, the dog can avoid the threaded rod to pass the second through-hole when removing, thereby plays spacing effect to the threaded rod.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

FIG. 2 is an enlarged schematic view of part A of the present invention;

fig. 3 is a schematic structural view of the present invention from above.

In the figure: 1 interbone fusion cage body, 2 fixed plates, 3 first through holes, 4 internal threads, 5 second through holes, 6 threaded rods, 7 extrusion blocks, 8 check blocks, 9 barbs, 10 screws and 11 threaded holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-3, the utility model provides a technical solution: an anchoring type interbody fusion cage under a lumbar intervertebral disc comprises an interbody fusion cage body 1, wherein the front side and the rear side of the upper surface and the lower surface of the interbody fusion cage body 1 are fixedly connected with fixing plates 2, the upper surface of the fixing plates 2 is provided with a plurality of barbs 9, the barbs 9 are in a sawtooth shape, the barbs 9 are arranged in an inclined manner, through the arrangement of the barbs 9, after the interbody fusion cage body 1 is implanted into two vertebral bodies, the barbs 9 can tightly hook the two vertebral bodies, so that the situation that the interbody fusion cage body 1 is displaced can be avoided, the right side surface of the fixing plate 2 is provided with a first through hole 3, the inner wall of the first through hole 3 is provided with an internal thread 4, the internal thread 4 is in threaded connection with the surface of a threaded rod 6, through the arrangement of the threaded rod 6, after the interbody fusion cage body 1 is implanted into the two vertebral bodies, a medical staff can rotate the threaded rod 6, the threaded, threaded rod 6 moves right and drives extrusion piece 7 and move right, just can make the slight upwards of upper surface of fixed plate 2 move, thereby can adjust the position of barb 9, make vertebra about barb 9 can hook tightly, the left end fixedly connected with dog 8 of threaded rod 6, and the diameter of dog 8 is greater than the diameter of threaded rod 6, through setting up dog 8, dog 8 can avoid threaded rod 6 to pass second through-hole 5 when moving, thereby play spacing effect to threaded rod 6, the left end of threaded rod 6 passes second through-hole 5 that 2 left surfaces of fixed plate seted up and extends to the left side of fixed plate 2.

Be provided with extrusion piece 7 in first through-hole 3, the shape of extrusion piece 7 is trapezoidal, the shape of first through-hole 3 is trapezoidal, through setting up the shape of extrusion piece 7 and first through-hole 3, can be when extrusion piece 7 moves right, make the upper surface of fixed plate 2 take place deformation, thereby make the position of barb 9 adjust, and the left surface of extrusion piece 7 and the right-hand member overlap joint of threaded rod 6, threaded hole 11 has all been seted up to the upper and lower both sides face of fusing ware body 1 between the awl, threaded hole 11 internal thread 4 is connected with screw 10, through setting up threaded hole 11 and screw 10, fuse ware body 1 after two internal vertebrae about implanting in the awl between the awl, screw 10 can fix at last vertebra internal, can make fusing ware body 1 more stable when fixed between the awl.

The utility model discloses an operating procedure does:

after the interbody fusion cage body 1 is implanted into two centrums, medical staff can rotate the threaded rod 6, the threaded rod 6 can drive the threaded rod 6 to move rightwards under the effect of the internal thread 4, the threaded rod 6 moves rightwards to drive the extrusion block 7 to move rightwards, and the slight upward movement of the upper surface of the fixing plate 2 can be realized, so that the position of the barb 9 can be adjusted, the upper and lower centrums can be hooked by the barb 9, and then people fix the interbody fusion cage body in the upper and lower two centrums through the screw 10.

The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an anchor formula interbody fusion cage under scope between lumbar vertebrae intervertebral, fuses ware body (1) between awl, its characterized in that: the front side and the rear side of the upper surface and the lower surface of the interbone fusion cage body (1) are fixedly connected with fixing plates (2), the upper surface of each fixing plate (2) is provided with a plurality of barbs (9), the right side surface of each fixing plate (2) is provided with a first through hole (3), the inner wall of each first through hole (3) is provided with an internal thread (4), each internal thread (4) is in threaded connection with the surface of a threaded rod (6), and the left end of each threaded rod (6) penetrates through a second through hole (5) formed in the left side surface of each fixing plate (2) and extends to the left side of each fixing plate (2);

the novel screw driver is characterized in that an extrusion block (7) is arranged in the first through hole (3), the left side face of the extrusion block (7) is in lap joint with the right end of the threaded rod (6), threaded holes (11) are formed in the upper side face and the lower side face of the inter-cone fusion device body (1), and screws (10) are connected with internal threads (4) of the threaded holes (11).

2. The endoscopic anchoring type interbody fusion cage between lumbar vertebral plates of claim 1, wherein: the barb (9) is in a saw-toothed shape, and the barb (9) is obliquely arranged.

3. The endoscopic anchoring type interbody fusion cage between lumbar vertebral plates of claim 1, wherein: the shape of the extrusion block (7) is trapezoid, and the shape of the first through hole (3) is trapezoid.

4. The endoscopic anchoring type interbody fusion cage between lumbar vertebral plates of claim 1, wherein: the left end fixedly connected with dog (8) of threaded rod (6), and the diameter of dog (8) is greater than the diameter of threaded rod (6).