CN215079508U

CN215079508U - Be used for anterior cervical spine titanium mesh nail inboard internal fixation device

Info

Publication number: CN215079508U
Application number: CN202120767106.XU
Authority: CN
Inventors: 王洪伟; 于海龙; 陈语
Original assignee: General Hospital of Shenyang Military Region
Current assignee: General Hospital of Shenyang Military Region; General Hospital of Northern Theater Command of PLA
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-12-10
Anticipated expiration: 2031-04-14

Abstract

The utility model discloses a be used for anterior cervical spine titanium mesh nail inboard internal fixation device, include: the supporting part fuses the portion with the setting at the supporting part both ends, fuses the portion and puts into the portion including nail board portion and titanium net, and the portion parcel is fixed at the tip of supporting part to the titanium net is put into, and the nail board portion is followed the titanium net and is put into the one end extension of keeping away from the supporting part in the portion. Wherein the titanium net portion of putting into has different diameter specifications, wherein fuses the portion simultaneously and transversely contacts with the centrum simultaneously with vertical, has avoided the strong and weak difference of bone nature to lead to the risk that the titanium net sinks, and through the restriction of nail board portion, after fusing portion and supporting part equipment, when putting into the centrum space after the decompression, can avoid the titanium net to put into the too dark risk that causes the damage to the spinal cord. Consequently guaranteeing to have the effect of ordinary cervical vertebra titanium net internal fixation steel sheet, playing instant stability in the art, the long-term stable effect of postoperative can play simultaneously and prevent that titanium net gliding or titanium net from sinking and lead to spinal cord injury and correction degree to lose the scheduling problem, promote bone grafting and fuse the effect, shorten the operation time.

Description

Be used for anterior cervical spine titanium mesh nail inboard internal fixation device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an internal fixing device for an anterior cervical titanium mesh nail plate.

Background

The cervical anterior vertebral body secondary resection is a common operation for treating cervical spondylosis and cervical spinal cord injury. Usually, autologous ilium bone grafting or titanium mesh bone grafting is needed in the operation to promote intervertebral fusion. Complications such as chronic pain, leash pain, pain of going upstairs and downstairs, infection and the like of the bone supply area often occur in the autologous iliac bone grafting, even huge hematoma of the bone supply area possibly occurs, life is threatened, and the appearance of the bone supply area is not satisfied by part of patients, so that life is influenced.

Currently, titanium mesh bone grafting has become a method of choice for many patients. However, due to the problems of operation experience, knocking force, driving depth, design of the titanium mesh and the like in the titanium mesh implantation process, the titanium mesh is likely to excessively move backwards in the driving process to press the spinal cord, and great risks are brought to the operation. Meanwhile, aging is a social problem along with the urbanization process, and for most of the elderly, the titanium mesh often sinks and is internally fixed and loosened in the long term after the anterior cervical titanium mesh bone grafting operation, even neurological symptoms are generated again, so that the operation failure is caused, and the life quality of a patient is seriously affected.

Therefore, how to provide an internal fixing device for an anterior cervical titanium mesh nail plate to reduce the operation risk is a technical problem which needs to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be used for anterior cervical way titanium net nail inboard fixing device can effectively solve titanium net gliding or titanium net and sink and lead to spinal cord injury and correction degree to lose the scheduling problem.

In order to solve the technical problem, the utility model provides a following technical scheme:

an in-plate titanium mesh fixation device for anterior cervical spine, comprising: the supporting part is in with the setting the portion that fuses at supporting part both ends, it puts into the portion including nail board portion and titanium net to fuse the portion, the portion parcel is fixed to titanium net is put into the portion the tip of supporting part, nail board portion is followed keep away from in the portion is put into to the titanium net the one end of supporting part extends, nail board portion is used for fixing with the centrum.

Preferably, one end of the titanium mesh embedding part is provided with a groove, and the end part of the supporting part is clamped in the groove.

Preferably, the radial inside of titanium net portion of putting into is equipped with the ladder face, the tip of supporting part with the contact of ladder face.

Preferably, the lateral part of the nail plate part is provided with a transverse thread channel, the nail plate part passes through the transverse thread channel through a transverse screw to be fixed on a vertebral body, the lateral part of the titanium mesh embedding part is provided with an oblique thread channel, and the titanium mesh embedding part passes through the oblique thread channel through an oblique screw to be fixed on the vertebral body.

Preferably, a plurality of the transverse threaded passages are provided on the nail plate portion.

Preferably, a screw blocking piece is arranged on the outer side of the nail plate part and used for preventing the transverse screw and the oblique screw from backing off.

Preferably, the nail plate part and the titanium mesh imbedding part are of an integrated structure.

Compared with the prior art, the technical scheme has the following advantages:

the utility model provides a be used for anterior cervical spine titanium mesh nail inboard internal fixation device, include: the supporting part fuses the portion with the setting at the supporting part both ends, fuses the portion and puts into the portion including nail board portion and titanium net, and the portion parcel is fixed at the tip of supporting part to the titanium net is put into, and the nail board portion is followed the titanium net and is put into the one end extension of keeping away from the supporting part in the portion. Wherein the tip that the titanium net was put into the portion can wrap up the titanium net to prevent titanium net point end direct contact centrum, titanium net portion of putting into moreover and centrum area of contact obviously increase, pressure diminishes, can reduce the long-term titanium net risk of sinking. In addition, the fusion part is simultaneously contacted with the transverse and longitudinal cortical bone of the vertebral body, so that the risk of titanium mesh subsidence caused by the difference of bone strength is avoided, and after the fusion part and the supporting part are assembled, the risk of damage to the spinal cord caused by the fact that the titanium mesh is deeply arranged in the vertebral body space after decompression in the traditional method can be avoided. Therefore the embodiment of the utility model provides a fixing device is guaranteeing to have the effect of ordinary cervical vertebra titanium net internal fixation steel sheet, plays instant stability in the art, and the effect is stabilized for a long time to the postoperative, can play simultaneously again and prevent that titanium net gliding or titanium net from sinking and lead to spinal cord injury and correction degree to lose the scheduling problem, promotes bone grafting and fuses the effect, shortens the operation time.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic cross-sectional structural view of an internal fixing device for an anterior cervical titanium mesh nail plate provided by the present invention;

fig. 2 is a schematic cross-sectional view of the internal fixing device for the anterior cervical titanium mesh nail plate provided by the present invention after screws are screwed thereon;

FIG. 3 is a side view of FIG. 1;

fig. 4 is a plan view of the fusion portion.

The reference numbers are as follows:

1 is a supporting part, 2 is a fusion part, 201 is a nail plate part, 202 is a titanium mesh placing part, 203 is a groove, 3 is a transverse screw, 4 is an oblique screw, and 5 is a screw retaining sheet.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of other ways than those described herein, and those skilled in the art will be able to make similar generalizations without departing from the spirit of the invention. The invention is therefore not limited to the specific embodiments disclosed below.

Referring to fig. 1 to 4, fig. 1 is a schematic cross-sectional view of an internal fixation device for an anterior cervical titanium mesh nail plate according to the present invention; fig. 2 is a schematic cross-sectional view of the internal fixing device for the anterior cervical titanium mesh nail plate provided by the present invention after screws are screwed thereon; FIG. 3 is a side view of FIG. 1; fig. 4 is a plan view of the fusion portion.

The utility model discloses a concrete embodiment provides a be used for anterior cervical way titanium net nail inboard internal fixation device, include: support portion 1 and the fusion portion 2 that sets up at support portion 1 both ends, support portion 1 is middle titanium net part, and fusion portion 2 includes that portion 202 is put into to nail board portion 201 and titanium net, and the portion 202 parcel is fixed at the tip of support portion 1 to titanium net, and nail board portion 201 is put into the one end extension of keeping away from support portion 1 on the portion 202 along the titanium net. The titanium mesh implanting part 202 has different diameter specifications, and when the titanium mesh implanting device is used, the titanium mesh with the proper diameter is selected according to the diameter of the vertebral body of a preoperative patient, so that the bone grafting fusion area can be increased as much as possible, and the phenomenon that the diameter is too large to extrude the posterior spinal cord can be avoided. Importantly, the titanium mesh implanting part 202 can wrap the end part of the titanium mesh to prevent the tip of the titanium mesh from directly contacting with the vertebral body, and the contact area between the titanium mesh implanting part 202 and the vertebral body is obviously increased, so that the pressure is reduced, and the long-term titanium mesh sinking risk can be reduced. In addition, the fusion part 2 is simultaneously contacted with the transverse and longitudinal cortical bone of the vertebral body, so that the risk of titanium mesh subsidence caused by the difference of bone strength is avoided, and after the fusion part 2 and the supporting part 1 are assembled, the risk of damage to the spinal cord caused by the fact that the titanium mesh is deeply arranged in the traditional method can be avoided when the fusion part is arranged in the vertebral body space after decompression due to the limitation of the nail plate part 201. Therefore the embodiment of the utility model provides a fixing device is guaranteeing to have the effect of ordinary cervical vertebra titanium net internal fixation steel sheet, plays instant stability in the art, and the effect is stabilized for a long time to the postoperative, can play simultaneously again and prevent that titanium net gliding or titanium net from sinking and lead to spinal cord injury and correction degree to lose the scheduling problem, promotes bone grafting and fuses the effect, shortens the operation time.

The specific structure of the titanium mesh insertion part 202 specifically includes the following two forms:

one is as follows: one end of the titanium mesh embedding part 202 is provided with a groove 203, the end part of the supporting part 1 is clamped in the groove 203, namely the end part of the titanium mesh is positioned in the groove 203, so that the tip of the titanium mesh is prevented from being exposed outside, and the two ends of the titanium mesh are prevented from directly contacting with the vertebral body.

The second step is as follows: the radial inner side of the titanium mesh embedding part 202 is provided with a step surface, and the end part of the supporting part 1 is contacted with the step surface, namely the titanium mesh can be prevented from being directly contacted with the vertebral body through the step surface.

In addition to the above two structures, the titanium mesh may be selected according to actual conditions as long as the titanium mesh can wrap the end of the titanium mesh.

When the titanium mesh is selected, after the cone is completely resected in the operation, the upper endplate and the lower endplate are processed, and after the intervertebral space is properly expanded, the distance L is measured. Then, the height h of the bottom end of the titanium mesh embedding part 202 is subtracted, if one end of the titanium mesh embedding part 202 is provided with a groove 203, h is the height of the titanium mesh embedding part 202 minus the depth of the groove 203, and if a step surface is arranged in the titanium mesh embedding part 202, h is the height of the titanium mesh embedding part 202 minus the height of the step surface, and the height of the titanium mesh to be cut is L-2 h.

In order to improve the connection stability of the fusion part 2 and the vertebral body, as shown in fig. 2 and 3, a transverse threaded passage is provided at the side of the nail plate part 201, and the nail plate part 201 is fixed on the vertebral body by a transverse screw 3 passing through the transverse threaded passage; the side part of the titanium mesh implanting part 202 is provided with an oblique thread passage, and the titanium mesh implanting part 202 passes through the oblique thread passage through an oblique screw 4 to be fixed on the vertebral body.

Wherein, a plurality of transverse screw channels are arranged on the nail plate part 201. The outside of nail board portion 201 is equipped with the screw and blocks the piece, and after screwing up horizontal screw 3 and oblique screw 4, rotatory screw separation blade 5 to make screw separation blade 5 and the tail end contact of each screw, in order to play the effect of restriction screw rotation, and then prevent that horizontal screw 3 and oblique screw 4 from moving back the nail, thereby avoid haring esophagus and the blood vessel in centrum the place ahead.

Further, the pegboard portion 201 and the titanium mesh insertion portion 202 are preferably of an integral structure. For the mode that selects the titanium board of suitable length to block the titanium net in traditional operation, owing to have nail board portion 201 limit dark, can avoid the too deep risk that causes spinal cord damage of titanium net, consequently can be rapidly with wholly put into the space after the decompression in, improved operation efficiency and security.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for fixing the inside of an anterior cervical titanium mesh nail plate, which is characterized by comprising: the supporting part is in with the setting the portion that fuses at supporting part both ends, it puts into the portion including nail board portion and titanium net to fuse the portion, the portion parcel is fixed to titanium net is put into the portion the tip of supporting part, nail board portion is followed keep away from in the portion is put into to the titanium net the one end of supporting part extends, nail board portion is used for fixing with the centrum.

2. The titanium mesh nail plate internal fixation device for the anterior cervical spine according to claim 1, wherein one end of the titanium mesh insertion part is provided with a groove, and the end of the support part is clipped in the groove.

3. The titanium mesh nail plate internal fixation device for the anterior cervical spine according to claim 1, wherein a step surface is provided on a radially inner side of the titanium mesh insertion portion, and an end of the support portion is in contact with the step surface.

4. The titanium mesh nail plate internal fixation device for the anterior cervical spine according to claim 1, wherein the side portion of the nail plate portion is provided with a transverse threaded passage through which the nail plate portion is fixed on the vertebral body by a transverse screw, the side portion of the titanium mesh insertion portion is provided with an oblique threaded passage through which the titanium mesh insertion portion is fixed on the vertebral body by an oblique screw.

5. The device as claimed in claim 4, wherein a plurality of said transverse threaded channels are provided on said plate portion.

6. The titanium mesh plate internal fixation device for anterior cervical spine according to claim 5, wherein a screw blocking plate is provided on the outside of the plate portion for preventing the lateral screw and the oblique screw from being withdrawn.

7. The titanium mesh pegboard internal fixation device for anterior cervical spine according to any of claims 1-6, wherein the pegboard portion and the titanium mesh insertion portion are a one-piece structure.