CN216570171U

CN216570171U - Wing-shaped fixing titanium net for lateral bone grafting of cervical vertebra

Info

Publication number: CN216570171U
Application number: CN202120275032.8U
Authority: CN
Inventors: 杨毅; 丁琛; 刘浩; 洪瑛
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-05-24
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a wing-shaped fixed titanium mesh for lateral bone grafting of cervical vertebra, which comprises a titanium mesh body, wherein the titanium mesh body is in a hollow column shape, and the top and the bottom of the titanium mesh body are respectively connected with an annular bone grafting part. The annular bone grafting component is adopted, so that the supporting strength and stability of the titanium mesh body can be improved, a supporting bone grafting structure is established between the residual vertebral body and the upper and lower vertebral bodies, the stress of the central main body component of the titanium mesh and the upper and lower vertebral bodies is reduced, and the risk of sinking of the titanium mesh is reduced; annular bone grafting part will stride across a centrum and 2 bone "defect" regions of intervertebral space height and shorten the region for 2 clearances, reduce the bone and crawl the substituted distance, as long as remain the centrum and can fuse at 4 angles with upper and lower centrum, the centrum time total excision operation festival section has just obtained and has fused effect and stability, has shortened bone healing's time, accelerates patient's recovery, can promote early rehabilitation.

Description

Wing-shaped fixing titanium net for lateral bone grafting of cervical vertebra

Technical Field

The utility model relates to the field of medical instruments, in particular to a wing-shaped fixing titanium mesh for lateral bone grafting of cervical vertebra.

Background

Cervical spondylotomy (ACCF) is suitable for patients who can not obtain good spinal decompression after simple discectomy, and can be used for combined posterior spinal canal enlargement based on ACCF for patients who have both anterior and posterior spinal compression. The ACCF is also an ideal choice for patients with vertebral body lesions (tumors, etc.), cervical dislocation and kyphotic deformity.

The existing ACCF surgical titanium mesh has the following defects:

1. the risk complication of the displacement and sinking of the titanium mesh after the operation of the patient is high; the titanium mesh is not fixed and is easy to shift into the vertebral canal, so that the paralysis and even death of the patient are caused; the incidence rate of postoperative titanium mesh subsidence can reach 70 percent.

2. The crossing distance after the vertebral body is removed in the ACCF operation is longer, and the creeping substitution distance of bones is longer, so that the fusion time is longer, the fusion efficiency is lower, and the re-operation revision risk is higher; the bone grafting has poor healing effect and long time, so that a lot of patients still do not heal in 6 months and 12 months, and need to wear the external cervical fixation branch for a long time, which is not beneficial to the early rehabilitation of the patients and the return to normal life and work;

3. after the existing straight titanium net is placed on the cervical vertebra, because the cervical vertebra of a human body has a certain physiological radian and is not straight, two ends of the titanium net can not be in good contact with a patient end plate, only one part of the titanium net is in direct contact with a vertebral end plate, and in addition, the titanium net sinks after operation, the radian loss of the cervical vertebra of the patient can be further aggravated, and the radian of the cervical vertebra can not be well reconstructed and maintained.

Specifically, as shown in fig. 4, in the existing ACCF surgical titanium mesh, the titanium mesh 31 is directly implanted into the empty slot of the excised residual vertebral body 8, and is not laterally expanded and fixed, the bone grafting fusion needs to span the middle residual vertebral body 8 from the upper vertebral body 22 to the lower vertebral body 21, the distance is long, the fusion rate is low, the fusion is slow, and the fixation is lacked, the titanium mesh 31 is easy to displace, and if the titanium mesh moves into the vertebral canal, the paralysis and even death of the patient can be caused; the contact area is small, the titanium net is easy to sink, and the incidence rate can reach 70 percent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a wing-shaped fixed titanium mesh for lateral bone grafting of cervical vertebra, which adopts an annular bone grafting part, can improve the support strength and stability of a titanium mesh body, establishes a support bone grafting structure between a residual vertebral body and upper and lower vertebral bodies, reduces the stress of a central main body part of the titanium mesh and the upper and lower vertebral bodies, and reduces the risk of subsidence of the titanium mesh.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

the utility model discloses a wing-shaped fixed titanium mesh for lateral bone grafting of cervical vertebra, which comprises a titanium mesh body, wherein the titanium mesh body is in a hollow column shape, and the top and the bottom of the titanium mesh body are respectively connected with an annular bone grafting component.

Preferably, the annular bone grafting parts are circular rings, the number of the annular bone grafting parts is 4, the tops of two of the annular bone grafting parts are flush with the top of the titanium mesh body, and the bottoms of the other two annular bone grafting parts are flush with the bottom of the titanium mesh body.

Furthermore, the outer side wall of the titanium mesh body is provided with sharp thorns.

Preferably, the number of the spikes is several, and the spikes are positioned on the left side wall and/or the right side wall of the titanium mesh body.

Furthermore, the foldable titanium alloy mesh plate is positioned in front of the titanium mesh body, and is provided with a distraction device which is connected with the titanium mesh body.

Preferably, the thickness of the titanium alloy mesh plate is smaller than that of the side wall of the titanium mesh body.

Further, the present invention also includes a set screw.

Preferably, there are 4 of the set screws.

The utility model has the following beneficial effects:

1. the annular bone grafting component is adopted, so that the supporting strength and stability of the titanium mesh body can be improved, a supporting bone grafting structure is established between the residual vertebral body and the upper and lower vertebral bodies, the stress of the central main body component of the titanium mesh and the upper and lower vertebral bodies is reduced, and the risk of sinking of the titanium mesh is reduced.

2. The bone grafting space is designed on the front side and two sides of the titanium mesh body, so that bone grafting in a wider range can be promoted, and fusion is accelerated;

3. the thin titanium alloy net is used for fixing the bone grafting material, so that the bone grafting material can be prevented from moving;

4. the spine pierces into the residual vertebral bodies on the two sides, and the residual vertebral bodies are utilized, so that the stability is improved, and the risks of titanium mesh displacement and paralysis of a patient are reduced;

5. annular bone grafting part will stride across a centrum and 2 bone "defect" regions of intervertebral space height and shorten to the region in 2 clearances, reduce the bone and crawl substituted distance, as long as remain the centrum and can fuse at 4 angles with upper and lower centrum, the once complete excision operation of centrum section has just obtained and has fused effect and stability, has shortened bone healing's time, accelerates patient's recovery, can promote early rehabilitation.

Drawings

FIG. 1 is a schematic structural view of a titanium mesh body;

FIG. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the present invention in use;

fig. 4 is a schematic view of a state of use of a conventional titanium mesh.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the titanium mesh body 1 is hollow and columnar, the top and the bottom of the titanium mesh body 1 are respectively connected with 4 annular bone grafting components 2, the annular bone grafting components 2 are circular rings, the tops of two of the annular bone grafting components are flush with the top of the titanium mesh body, and the bottoms of the other two annular bone grafting components are flush with the bottom of the titanium mesh body; the outer side wall of the titanium mesh body 1 is provided with a plurality of spikes 3, and the spikes 3 are positioned on the left side wall and/or the right side wall of the titanium mesh body 1.

The utility model also comprises 4 fixing screws 4, and the number of the fixing screws 4 is 4.

As shown in fig. 2 and 3, the utility model further comprises a foldable titanium alloy mesh plate 6, wherein the titanium alloy mesh plate 6 is positioned in front of the titanium mesh body 1, the titanium alloy mesh plate 6 is provided with a distraction device 7, and the distraction device 7 is connected with the titanium mesh body 1; the thickness of the titanium alloy mesh plate 6 is smaller than that of the side wall of the titanium mesh body 1.

When in use, the spine 3 is pierced into the residual vertebral bodies 8 at the two sides, and the fixing screw 4 is obliquely penetrated through the side wall of the titanium mesh body and then is nailed into the residual vertebral bodies 8 at the two sides; the number of the fixing screws 4 is 4, wherein the front ends of two fixing screws 4 penetrate through the left side wall of the titanium mesh body 1, and the front ends of the other two fixing screws 4 penetrate through the right side wall of the titanium mesh body 1.

The superior vertebral body 22, the inferior vertebral body 21 and the residual vertebral body 8 can be fused by 4 annular bone graft members 2.

The folded titanium alloy mesh plate 6 can be used for lateral bone grafting; can tile in the place ahead of titanium net body 1 after screwing up locking screw fixed, mainly play the effect of fixed bone grafting material, prevent that side bone grafting material postoperative from removing.

The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model.

Claims

1. The winged fixed titanium net of bone is planted to cervical vertebra side, its characterized in that: the titanium mesh comprises a titanium mesh body, wherein the titanium mesh body is in a hollow columnar shape, and the top and the bottom of the titanium mesh body are respectively connected with an annular bone grafting component;

the annular bone grafting parts are circular rings, the number of the annular bone grafting parts is 4, the tops of two of the annular bone grafting parts are flush with the top of the titanium mesh body, and the bottoms of the other two annular bone grafting parts are flush with the bottom of the titanium mesh body.

2. The lateral cervical vertebra bone grafting wing-shaped fixing titanium net according to claim 1, characterized in that: the outer side wall of the titanium mesh body is provided with sharp thorns.

3. The lateral cervical vertebra bone grafting wing-shaped fixing titanium net according to claim 2, characterized in that: the number of the spikes is a plurality, and the spikes are positioned on the left side wall and/or the right side wall of the titanium mesh body.

4. The lateral cervical vertebra bone grafting wing-shaped fixing titanium net according to any one of claims 1 to 3, which is characterized in that: the foldable titanium alloy mesh plate is positioned in front of the titanium mesh body, and is provided with a distraction device which is connected with the titanium mesh body.

5. The lateral cervical vertebra grafting bone wing-shaped fixing titanium net according to claim 4, characterized in that: the thickness of the titanium alloy mesh plate is smaller than that of the side wall of the titanium mesh body.

6. The lateral cervical vertebra bone grafting wing-shaped fixing titanium net according to claim 1, characterized in that: also comprises a fixing screw.

7. The lateral cervical vertebra grafting bone wing-shaped fixing titanium net according to claim 6, characterized in that: there are 4 set screws.