CN217645387U

CN217645387U - Zero notch of lumbar vertebrae way of escape fuses system

Info

Publication number: CN217645387U
Application number: CN202121729406.5U
Authority: CN
Inventors: 黄振强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-10-25
Anticipated expiration: 2031-07-27

Abstract

The utility model discloses a zero notch of lumbar vertebrae way of escape fuses ware system. The fusion cage system comprises a fusion cage and an impactor; the driver comprises a connecting seat which is detachably connected to the fusion device; the front side of the fusion cage is provided with at least two inclined locking holes; the axial height of the connecting seat is more than 1.5 cm; the connecting seat is provided with at least two obliquely penetrating channels, and the outlet end of each channel corresponds to a locking hole; the included angle between the axis of the channel and the axis of the connecting seat is 30-35 degrees. Through the utility model discloses only need once to lead out nervous tissue such as nerve root, dura mater bag, through the impactor with the integration ware put into between the centrum after directly remove the connecting seat, at the in-process of screw in locking nail, locking nail and screwdriver go on at connecting seat and integration ware completely, do not contact with the nervous tissue around in order to avoid haring centrum nervous tissue around, only need a spinal canal way of escape incision, but greatly reduced operation expense, operation risk, operation wound and operation time.

Description

Zero notch of lumbar vertebrae way of escape fuses system

Technical Field

The utility model relates to a lumbar vertebrae way of escape implantation technical field has especially related to a zero notch of lumbar vertebrae way of escape fuses ware system.

Background

The vertebra comprises a bone structure consisting of a vertebral body, two vertebral pedicles, two vertebral plates, two transverse processes, four articular processes and a spinous process, a cervical vertebra, a thoracic vertebra, a lumbar vertebra, a sacral vertebra and a caudal vertebra. Lumbar spine disease can result from poor habits or from transient inappropriate behavior. At present, with the frequent onset of the spine diseases of people, the treatment means of the spine is more and more targeted, the current lumbar fusion operation is the main means for treating the lumbar diseases at present, and the lumbar fusion cage plays more and more important roles as an important built-in object in the lumbar intervertebral interface fusion technology. The lumbar fusion cage is generally divided into a cage applied to the anterior approach and a cage applied to the posterior approach. Because the operable space of the anterior lumbar spine is large, the application risk of the anterior fusion cage is smaller than that of the posterior fusion cage, the anterior fusion cage has good effect at present but needs two surgical incisions, and the surgery is complex, the wound is large and the risk is high. Therefore, a posterior fusion cage is developed in the industry, for example, the Chinese utility model CN203693843U discloses a lumbar vertebra posterior side intervertebral fixation fusion cage, and for example, the Chinese utility model CN209316161U discloses a zero incisura lumbar vertebra posterior fusion cage and the like.

The operation process of the lumbar vertebra posterior approach fusion cage comprises the following steps: the transverse diameter of the vertebral canal is about 2.5 cm, the dura mater sac is arranged in the vertebral canal, the nerve roots are arranged on two sides, when the fusion cage is placed, the nerve root and the dura mater sac on one side are firstly retracted towards the opposite side to expose the intervertebral disc, the fusion cage is placed after the protruded intervertebral disc is cut, and the top end of the placed fusion cage (namely the top of the front side of the fusion cage) is about 2-4 mm deeper than the rear edge of the vertebral body.

After the lumbar vertebra posterior fusion cage (at least including but not limited to the posterior fusion cages disclosed by the two utility models) in the prior art is placed into the fusion cage between the vertebral bodies through the impactor, after the impactor is withdrawn, the top end of the fusion cage is covered or partially covered due to the return of the nerve root and the dural sac, so that the top end can hardly be directly observed, and the locking nail can not be screwed into the top end of the fusion cage; the existing posterior fusion device cannot be operated in specific clinical practice, and the reasons are as follows: the nerve root and the dura mater sac are retracted towards the opposite side to only reach the central line of the vertebral canal, about 1.3 cm, a fusion device with the width of 1 cm is arranged under the width, the nerve root and the dura mater sac need to be retracted for the second time for screwing in the locking nail, the nerve root is damaged by excessive retraction or frequent retraction, the nerve tissue such as the peripheral nerve root and the dura mater sac is easily damaged by abrasion when the locking nail is screwed in, and the risk is very high.

Even if the fixing body with the locking hole with the guiding function is adopted in the fusion cage disclosed by the Chinese utility model CN209316161U, in the actual posterior vertebral body clinical operation, because the fixing body is fixedly connected with the fusion cage main body and is arranged in the vertebral body, the top end of the fixing body at least does not exceed the rear edge of the vertebral body after the fusion cage is arranged, the situation that the locking hole cannot be directly viewed as above, namely the locking nail cannot be screwed in still exists; even if nerve tissues such as nerve roots, dura mater sac and the like can be retracted in some cases, the top end of the fusion device is partially exposed to see the locking hole, but the locking hole is only seen, and when a locking nail with a certain length is screwed into the vertebral body through the locking hole in an inclined angle, not only is the thread on the outer peripheral surface of the locking hole high risk of contacting and damaging the nerve tissues such as the nerve roots, the dura mater sac and the like, but also the inclined screwing of the locking nail causes greater operation risk compared with the vertical screwing which needs to retract the nerve tissues such as the nerve roots, the dura mater sac and the like.

Although the existing zero-notch lumbar posterior fusion cage has a complex lumbar posterior structure and a small operable space, the existing zero-notch lumbar posterior fusion cage has low operability in specific application, nerve tissues such as nerve roots and dura mater sac need to be retracted for many times, and the inclined screwing process of the locking nails has a great risk of damaging the nerve tissues such as the nerve roots and the dura mater sac, so that the existing zero-notch lumbar posterior fusion cage is really applied to clinical operation and has great challenge and operation risk.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a zero notch of lumbar vertebrae way of escape fuses ware system.

The utility model discloses the technical problem that will solve realizes through following technical scheme:

a lumbar posterior zero-incisure fusion device system, which comprises a fusion device and a driver; the impactor comprises a connecting seat which is detachably connected to the fusion device; the front side of the fusion cage is provided with at least two inclined locking holes; the axial height of the connecting seat is more than 1.5 cm; the connecting seat is provided with at least two obliquely penetrating channels, and the outlet end of each channel corresponds to one locking hole; the included angle between the axis of the channel and the axis of the connecting seat is 30-35 degrees.

As the utility model provides a lumbar vertebrae way of escape zero notch fuse system's a preferred embodiment, the locking hole with the passageway coaxial line sets up.

As the utility model provides a lumbar vertebrae way of escape zero notch fuse-element system's a preferred embodiment, connecting seat axial height is 1.5 ~ 2.0cm.

As the utility model provides a lumbar vertebrae way of escape zero notch fuse ware system's an preferred embodiment, fuse dismantling between ware and the connecting seat and be connected for screw thread formula connection structure or buckle formula connection structure.

As the utility model provides a lumbar vertebrae way of escape zero notch fuse ware system a preferred embodiment, screw thread formula connection structure is including setting up fuse the screw hole at ware front side top and set up screw thread head on the connecting seat, screw thread head with the screw hole cooperatees.

As the utility model provides a lumbar vertebrae way of escape zero notch fuse system's an preferred embodiment, the entry end setting of passageway is in the front side top of connecting seat.

As the utility model provides a lumbar vertebrae way of escape zero notch fuse system's a preferred embodiment, the entry end setting of passageway is in the front side lateral part of connecting seat.

As the utility model provides a lumbar vertebrae way of escape zero notch fuses a preferred embodiment of ware system, fuse the ware and reach including fusing the ware body be provided with the artificial bone filling hole that runs through on the ware body.

As the utility model provides a lumbar vertebrae way of escape zero notch fuse ware system's a preferred embodiment, be provided with ripple architecture on the fuse ware body surface.

As a preferred embodiment of the lumbar posterior zero-notch fusion cage system provided by the present invention, two locking holes are provided at two end portions of the front side of the fusion cage; the two locking holes are inclined in opposite directions.

The utility model discloses following beneficial effect has:

the axial height of the connecting seat detachably connected with the fusion cage is more than 1.5cm, at least two passages which are obliquely penetrated are arranged in the connecting seat, and the outlet end of each passage corresponds to one locking hole; the included angle between the axis of the channel and the axis of the connecting seat is 30-35 degrees. So design, accomplish lumbar vertebrae way canalis spinalis decompression, discectomy postoperative, to mutual connection's fusion ware and connecting seat, through the canalis spinalis by the backward forward between the centrum, reuse elastic screwdriver inserts required length's locking nail the passageway and from the locking hole back-out get into in the centrum to lock the locking nail in accomplish in the front side of fusion ware and the centrum fusion ware with the locking of centrum, remove at last when moving away the ware together with remove the connecting seat.

Through the utility model discloses fuse ware system only needs once to lead out nervous tissue such as nerve root, dura mater bag, will through the impactor fuse ware put into between the centrum back directly remove the connecting seat, can nail into the locking nail of suitable length according to reality in the degree of depth selection, then insert in the inclined passage in the connecting seat get into the locking hole screw in again to the centrum, so connecting seat axial height is more than 1.5cm, in addition the passageway axis with contained angle between the connecting seat axis is 30 ~ 35, then inclined passage's entry end is completely to be higher than nervous tissue such as nerve root, dura mater bag, inclined passage is a pipe effect, makes the outer and connecting seat peripheral nervous tissue of fuse ware receive the protection, at the in-process of screw in locking nail, locking nail and screw are criticized to go on connecting seat and fuse ware completely, do not contact with peripheral nervous tissue, in order to avoid or even stop taking place the accident that damages nervous tissue around the centrum in the in-process of screw in locking nail, simultaneously the utility model discloses a way incision behind the back way of zero incisura fusion ware system when using only need do in addition, can reduce the operation cost, the operation cost greatly, the operation risk and have the benefit of surgery.

The utility model discloses the slope passageway that sets up in the connecting seat not only is used for holding to inject whole or most locking nail and screwdriver business turn over route and only sets up the leading-in hole in order to avoid current integration ware and cause the locking nail to appear rocking and skew when beginning the screw in and predetermine inclination's problem, still with the passageway axis with contained angle between the connecting seat axis is 30 ~ 35 and makes the length of passageway enough long can hold different length locking nails, is convenient for select the locking nail of suitable length according to the centrum condition further to improve the locking stability of integration ware and both sides centrum, has solved the problem that can't adjust locking nail length in a flexible way after the integration ware of current built-in locking nail is put into between the centrum.

Drawings

Fig. 1 is a schematic structural diagram of the fusion cage system of the present invention;

fig. 2 is an exploded view of the fusion cage system of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken at A-A of FIG. 1;

fig. 4 is a flow chart of the method of using the fusion cage system of the present invention;

fig. 5 is a schematic view of the using process of the fusion cage system of the present invention.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the following specific embodiments and accompanying drawings, and it should be understood that the following embodiments are only used for explaining the present invention and are not used to limit the present invention.

Referring to fig. 1-3, the present invention provides a lumbar posterior zero-incisura fusion cage system, which includes a fusion cage 1 and an impactor, wherein the impactor is used to insert the fusion cage 1 into the vertebral body from the lumbar posterior. Specifically, the impactor comprises an impactor body (not shown in the figure) and a connecting seat 2 connected with the impactor body, wherein the connecting seat 2 is detachably connected to the fusion device 1, and the impactor body is used for placing the connecting seat 2 and the fusion device 1 together into the vertebral bodies and detaching the connecting seat 2 from the fusion device 1 so as to move the connecting seat 2 out of the vertebral bodies. The front side of the fusion cage 1 is provided with at least two inclined locking holes 11, and the locking holes 11 are used for locking nails 3 to pass through so as to be screwed into vertebral bodies and fix the vertebral bodies on the fusion cage 1 in a limiting way. The axial height h of the connecting seat 2 is more than 1.5 cm; the connecting seat 2 is provided with at least two passages 21 which are obliquely penetrated, the outlet end of each passage 21 corresponds to one locking hole 11, and the locking nail 3 can directly enter and penetrate through the locking hole 11 along the passage 21 after being inserted into the passage 21; the included angle a between the axis of the channel 21 and the axis of the connecting seat 2 is 30-35 degrees, so that the design not only ensures that the length of the channel 21 is long enough, but also ensures that the locking nail 3 is screwed into the vertebral body at an effective inclination angle so as to ensure that the fusion cage 1 is more stably connected with the vertebral body.

The utility model discloses in, locking hole 11 with passageway 21 coaxial line sets up, and so design is favorable to locking nail 3 along passageway 21 is smooth and the entering of no off normal and pass locking hole 11 makes locking nail 3 is effectively with predetermineeing inclination screw in centrum. It will also be appreciated that the angle of inclination of the locking hole 11 with respect to the axis of the cage 1 is the same as the angle of inclination of the channel 21 with respect to the axis of the attachment socket 2.

The utility model discloses in, 2 axial height of connecting seat are 1.5 ~ 2.0cm, and the altitude design is short excessively, is similar to current back way and fuses ware 1 at the leading-in hole that the head set up, is difficult to effectively expose locking hole 11 and is difficult to play the effect of protection back way nervous tissue, and the altitude design overlength is unfavorable for the operation.

The utility model discloses in, fuse dismantling between ware 1 and the connecting seat 2 and be connected for screw thread formula connection structure or buckle formula connection structure. Specifically, the threaded connection structure comprises a threaded hole 12 formed in the top of the front side of the fusion cage 1 and a threaded head arranged on the connecting seat 2, and the threaded head is matched with the threaded hole 12. During specific implementation, the driver body can rotate to drive the thread head of the connecting seat 2 to be screwed out of the threaded hole 12, so that the connecting seat 2 can be detached from the fusion cage 1. It should be noted that the impactor body is an existing conventional component, and it is sufficient to insert the connecting socket 2 and the fusion cage 1 between the vertebral bodies and detach the connecting socket 2 from the fusion cage 1. It should be noted that the driver body and the connecting socket 2 may be integrally connected or may be separately connected, where the separate connection means that the driver body and the connecting socket 2 are independent from each other, and when the driver body needs to act on the connecting socket 2, the driver body is connected to the connecting socket 2. Further, the driver main body is detachably connected with the connecting base 2 through a connecting member, so that the driver main body drives the connecting base 2 to move, rotate and the like through the connecting member.

In some embodiments of the present invention, the inlet end 211 of the channel 21 is disposed at the front top of the connecting socket 2, and in other embodiments, the inlet end 211 of the channel 21 is disposed at the front side of the connecting socket 2. Because the axial height h of the connecting seat 2 is more than 1.5cm, in addition, the axis of the channel 21 and the included angle a between the axes of the connecting seat 2 are 30-35 degrees, the inlet end 211 of the inclined channel 21 is designed at the top or the side part of the front side of the connecting seat 2 and is completely higher than nerve tissues such as nerve roots, dura sac and the like, the inclined channel 21 is equivalent to a conduit effect, so that the nerve tissues outside the fusion device 1 and around the connecting seat 2 are protected, in the process of screwing the locking nail 3, the locking nail 3 and the screwdriver are completely carried out on the connecting seat 2 and the fusion device 1 and do not contact with the surrounding nerve tissues, and the accident that the nerve tissues around the vertebral body are damaged in the process of screwing the locking nail 3 is avoided or even stopped.

The utility model discloses in, fuse ware 1 includes fuse ware body 13 and be provided with the artificial bone filling hole 14 that runs through on the fuse ware body 13. Specifically, the artificial bone filling hole 14 can be filled with artificial bone materials, and the artificial bone can be integrated with the lumbar vertebra, so that the postoperative recovery is accelerated. Specifically, in the present embodiment, the artificial bone filling hole 14 is provided in a direction toward the vertebral bodies of the fusion device 1 and penetrates both sides thereof, thus facilitating the artificial bone material to directly contact both vertebral bodies.

In the present invention, a corrugated structure 15 is provided on the outer surface of the fusion cage body 13. The corrugations 15 protrude beyond the outer surface of the cage 1 and prevent the cage 1 from sliding relative to the vertebrae during use. It will be appreciated that the bellows 15 may be provided in other similar friction-increasing configurations.

In the present invention, two locking holes 11 are provided at both ends of the front side of the fusion device 1; the two locking holes 11 are inclined in opposite directions. It will be appreciated that more than two locking holes 11 may be provided as required to enhance the stability of the locking connection of the cage 1 to the vertebral bodies.

As shown in fig. 4 and 5, the utility model is used as follows:

after the decompression of the lumbar posterior vertebral canal and the discectomy are completed, the fusion cage 1 and the connecting seat 2, which are connected with each other, are placed between the vertebral bodies through the vertebral canal from the back to the front (as shown in fig. 5- (a)), the locking nail 3 of a desired length is selected to be loaded into the channel 21 (as shown in fig. 5- (b)), then the locking nail 3 is unscrewed from the locking hole 11 into the vertebral body by using an elastic screwdriver, so that the locking nail 3 is locked at the front side of the fusion cage 1 and in the vertebral body, the locking of the fusion cage 1 and the vertebral body is completed, after all the locking nails 3 are screwed (as shown in fig. 5- (c)), the connecting seat 2 is detached from the fusion cage 1 by the driver body, and finally the connecting seat 2 is removed together with the driver when the driver is removed (as shown in fig. 5- (d)).

Through the utility model discloses fuse ware system only needs once to lead out nervous tissue such as nerve root, dura mater bag, will through the impactor fuse ware 1 does not directly remove connecting seat 2 after putting into between the centrum, can nail into the degree of depth according to reality and select the locking nail 3 of suitable length, then insert in the oblique passageway 21 in the connecting seat 2 and get into locking hole 11 and screw in again to the centrum, so connecting seat 2 axial height is more than 1.5cm, in addition the passageway 21 axis with contained angle a between the 2 axes of connecting seat is 30 ~ 35, then the entry end 211 of oblique passageway 21 is higher than nervous tissue such as nerve root, dura mater bag completely, and oblique passageway 21 is a pipe effect considerably, makes the nervous tissue that fuses 1 outside and around the connecting seat 2 protected, at the in-process of screw in locking nail 3, locking nail 3 and the screw are gone on connecting seat 2 and fuse ware 1 completely, do not contact with the nervous tissue around to avoid taking place the accident of damage nervous tissue around the in-process of screw in locking nail 3, simultaneously the utility model discloses the zero incision ware system should be used when fusing in return, need not only cut out the operation of a surgery way, can reduce the operation cost in addition, can reduce the operation way again, can reduce the operation cost after the operation again.

The utility model discloses the slope passageway 21 that sets up in the connecting seat 2 not only is used for holding and prescribes a limit to whole or most locking nail 3 and screwdriver business turn over route in order to avoid current fusion ware 1 only set up the induction hole at the head and cause locking nail 3 to begin to appear rocking and skew to predetermine inclination's problem when the screw in, still with passageway 21 axis with contained angle an between the 2 axes of connecting seat is 30 ~ 35 and makes the sufficient length of passageway 21 can hold different length locking nails 3, is convenient for select the locking nail 3 of suitable length to further improve the locking stability of fusion ware 1 and both sides centrum according to the centrum condition, has solved the problem that can't adjust locking nail 3 length in a flexible way after current fusion ware 1 of built-in locking nail 3 puts into the centrum.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is specific and detailed, but the invention can not be understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by adopting the equivalent substitution or equivalent transformation should fall within the protection scope of the present invention.

Claims

1. A lumbar posterior zero-incisure fusion device system, which comprises a fusion device and a driver; the driver comprises a connecting seat which is detachably connected to the fusion device; the front side of the fusion cage is provided with at least two inclined locking holes; the connecting seat is characterized in that the axial height of the connecting seat is more than 1.5 cm; the connecting seat is provided with at least two obliquely penetrating channels, and the outlet end of each channel corresponds to one locking hole; the included angle between the axis of the channel and the axis of the connecting seat is 30-35 degrees.

2. The posterior lumbar spine zero notch fusion system of claim 1 wherein the locking hole is disposed coaxially with the channel.

3. The posterior lumbar spine zero-notch fusion cage system according to claim 1, wherein the connecting seat has an axial height of 1.5 to 2.0cm.

4. The lumbar posterior zero notch fusion cage system according to claim 1, wherein the detachable connection between the fusion cage and the connecting seat is a threaded connection structure or a snap-fit connection structure.

5. The posterior lumbar spine zero notch fusion cage system according to claim 4, wherein the threaded connection structure comprises a threaded hole disposed at the top of the front side of the fusion cage and a threaded head disposed on the connection seat, the threaded head mating with the threaded hole.

6. The posterior lumbar spine zero notch fusion system according to claim 1, wherein the inlet end of the channel is disposed at the top of the front side of the connecting seat.

7. The posterior lumbar spine zero notch fusion system according to claim 1, wherein the inlet end of the passage is disposed at a front side of the connection seat.

8. The posterior lumbar zero-notch fusion system according to claim 1, wherein said fusion cage comprises a cage body and an artificial bone filling hole provided therethrough.

9. The posterior lumbar spine zero-notch fusion system according to claim 1, wherein two locking holes are provided at both ends of the front side of the fusion device; the two locking holes are inclined in opposite directions.