CN215192131U

CN215192131U - Lumbar vertebra intervertebral bone grafting device under passageway

Info

Publication number: CN215192131U
Application number: CN202120282680.6U
Authority: CN
Inventors: 钟睿
Original assignee: Sport Hospital Attached To Cdsu
Current assignee: Sport Hospital Attached To Cdsu
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-12-17
Anticipated expiration: 2031-02-01

Abstract

The utility model discloses a lumbar vertebrae intervertebral bone grafting device under passageway belongs to medical instrument technical field. The sleeve comprises a feed inlet and a push inlet, and the push device enters from the push inlet and pushes materials in the sleeve to exit from the feed inlet; the edge of the feed inlet is in arc transition; the propelling device comprises a push rod, the push rod is fixedly connected with a piston, and the piston pushes the materials to be discharged from the feed port. The utility model discloses put into the sleeve and compress tightly the bone grain from the feed inlet, through advancing deviceIn action, the bone particles are pushed into the intervertebral space by utilizing the piston principle. The pushing device can quantify the pushed bone particles to reach 0.5cm at a time³The implantation amount of the bone particles greatly improves the efficiency of bone particle implantation. The push device is convenient and quick to operate when being pressed and pushed. Be equipped with the arc transition in feed inlet department, can effectively avoid the damage of feed inlet to soft tissue, dura mater and nerve at bone grain implantation in-process, it is safe high-efficient.

Description

Lumbar vertebra intervertebral bone grafting device under passageway

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to lumbar vertebrae intervertebral bone grafting device under passageway.

Background

The lumbar vertebra posterior intervertebral fusion is a common operation for treating lumbar diseases, such as lumbar intervertebral disc protrusion, lumbar spinal stenosis, lumbar spondylolisthesis and the like, and intervertebral bone grafting fusion is the most important step in the operation.

The bone grafting materials used at present are mostly from bone grains at the positions of patient self vertebral plates, articular processes, spinous processes and the like, and allogenic bone grafting or artificial bones are also used. After the intervertebral space is sufficiently treated, it is necessary to fill bone particles into the intervertebral space before the cage is placed between the vertebrae to increase the fusion rate. At present, a mature and efficient special spine interbody bone grafting instrument is still lacking clinically, a gun-shaped forceps is generally adopted to clamp small pieces of broken bones and fill the small pieces of broken bones into the interbody space, the bone filling amount each time is very limited, the bone grafting efficiency is extremely low, the bone grafting amount is inconvenient to count, the operation difficulty is increased, and the operation time is prolonged. The temporary bone grafting device with the front end cut and modified by the injector is feasible in an open long-section operation, but is very inconvenient in a bone grafting fusion operation under a posterior channel, the depth of the bone grafting fusion operation cannot reach intervertebral space, and the risk of damaging nerves is increased due to the fact that bone grafting particles fall into a vertebral canal in a scattered manner, and the curative effect of the operation is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the utility model provides a lumbar intervertebral bone grafting device under passageway that can quantitative put into bone grain and safe, convenient, quick.

In order to achieve the above purpose, the present invention is realized by the following technical solutions:

a lumbar intervertebral bone grafting device under a channel comprises a sleeve and a propelling device, wherein the propelling device is arranged in the sleeve, the sleeve comprises a feeding hole and a propelling hole, and the propelling device enters from the propelling hole and pushes materials in the sleeve to flow out of the feeding hole; the edge of the feed inlet is in arc transition;

the propelling device comprises a button arranged outside the propelling port, a propelling part arranged in the sleeve and a piston; the button is connected with the propelling component; the pushing component is internally provided with a push rod which is fixedly connected with the piston, and the piston pushes the material to flow out from the feeding hole.

Further, the sleeve is a sleeve with an oval pipe diameter.

Further, the long inner diameter of the sleeve is 10mm, and the short inner diameter of the sleeve is 8 mm; the inner length of the sleeve is 100 mm.

Furthermore, two side wings are symmetrically arranged on the outer side surface of the sleeve close to the pushing port.

Further, the short inner diameter is perpendicular to a straight line formed by the two side wings.

Furthermore, propulsion element includes the card pole ware of two symmetry settings and the stopper of two symmetry settings, the stopper sets up the below of card pole ware, the push rod passes the clearance that two card pole wares formed and the clearance that two stoppers formed in proper order.

Further, the rod clamping device comprises a supporting part and a movable part connected below the supporting part; a telescopic space is formed between the movable part and the inside of the sleeve, and a spring is arranged in the telescopic space.

Furthermore, an extrusion sleeve is sleeved on the lower portion of the movable portion, and the lower edge of the extrusion sleeve is turned outwards in a hook shape.

Furthermore, a boss is arranged at the top of the limiting stopper, and the lower edge of the boss extrusion sleeve is buckled in a hook-shaped everting matching manner.

Further, the button is fixedly connected with the top end of the supporting part.

The utility model discloses bone grafting ware between lumbar vertebrae vertebra under passageway, its beneficial effect lies in:

(1) the bone particles are put into the sleeve from the feeding hole and are compressed, and the bone particles are pushed into the intervertebral space by the aid of the piston principle under the action of the pushing device. The pushing device can quantify the pushed bone particles to reach 0.5cm at a time³The implantation amount of the bone particles greatly improves the efficiency of bone particle implantation.

(2) The push device is convenient and quick to operate when being pressed and pushed. Be equipped with the arc transition in feed inlet department, can effectively avoid the damage of feed inlet to soft tissue, dura mater and nerve at bone grain implantation in-process, it is safe high-efficient. The device is convenient to use in the lumbar vertebra posterior channel channels with various depths, and can be suitable for intervertebral bone grafting operation of posterior open surgery.

Drawings

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

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

FIG. 2 is a schematic structural view of a pushing device according to the present invention;

1 sleeve, 2 feed inlets, 3 push inlets, 4 arc-shaped transitions, 5 buttons, 6 pistons, 7 push rods, 8 side wings, 9 rod clamping devices, 10 limiters, 11 springs, 12 extrusion sleeves and 13 bosses;

901 support part, 902 movable part, 903 telescopic space.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.

Example 1

A bone grafting device for lumbar intervertebral under a channel is shown in figures 1 and 2 and comprises a sleeve 1 and a propelling device, wherein the propelling device is arranged in the sleeve 1, the sleeve 1 comprises a feeding hole 2 and a propelling hole 3, and the propelling device enters from the propelling hole 3 and pushes materials in the sleeve to exit from the feeding hole 2; the edge of the feed inlet 2 is in arc transition 4;

the propelling device comprises a button 5 arranged outside the propelling port 3, a propelling part arranged in the sleeve 1 and a piston 6; the button 5 is connected with the propelling component; the pushing component is internally provided with a push rod 7, the push rod 7 is fixedly connected with the piston 6, and the piston 6 pushes the material to flow out of the feeding hole 2.

In this embodiment, the sleeve 1 is a sleeve 1 with an elliptical tube diameter. The oval sleeve 1 has a long inner diameter of 10mm and the short inner diameter of the sleeve 1 is 8 mm. The length of this length internal diameter and short internal diameter is the most suitable internal diameter that intervertebral bone grain implanted, makes things convenient for the sleeve to get into some narrow intervertebral spaces, and sleeve 1 can get into intervertebral space easily, but can not cause in the same direction as of intervertebral space, and the volume that simultaneously also furthest's increase bone grain implanted improves bone grain and implants efficiency.

Different with the length of bone grafting ware between ordinary way back vertebra, telescopic internal length is 100mm in this embodiment, and the bone grafting ware is small and exquisite, the operation of being convenient for, and the bone grain volume in this length can satisfy most bone grafting operation.

In this embodiment, two side wings 8 are symmetrically disposed on the outer side surface of the sleeve 1 near the pushing opening 3. The short inner diameter is perpendicular to the line formed by the two flanks 8. Each side wing is 8mm wide and 5mm thick, which is beneficial for the operator to exert force in opposite directions during operation, the device for pushing and pressing the bone at the rear part is similar to the structure of a mechanical pencil, and the front end pushes and implants the bone by 0.5cm when the operator presses once³. When the operation person is operating, forefinger and middle finger card are at flank 8, and flank 8 provides support and impetus for the finger, is convenient for to the operation of button 5, and it is too deep to insert the intervertebral space with the sleeve carelessly when avoiding the operator to plant the bone, has improved the safety in the operation greatly.

In this embodiment, the propelling part includes two symmetrically disposed rod clamping devices 9 and two symmetrically disposed stoppers 10, the stoppers 10 are disposed below the rod clamping devices 9, and the push rod 7 sequentially passes through a gap formed by the two rod clamping devices 9 and a gap formed by the two stoppers 10. The rod clamping device 9 comprises a supporting part 901 and a movable part 902 connected below the supporting part 901; an expansion space 903 is formed between the movable portion 902 and the inside of the sleeve 1, and a spring 11 is provided in the expansion space 903. The lower part of the movable part 902 is sleeved with an extrusion sleeve 12, and the lower edge of the extrusion sleeve 12 is turned outwards in a hook shape. The top of the stopper 10 is provided with a boss 13, and the boss 13 presses the hook-shaped everting matching buckle at the lower edge of the sleeve 12. The button 5 is fixedly connected to the top end of the support 901.

Rubber rings are arranged below the limiter 10 and at the outlet of the push rod 7, the rubber rings can prevent the push rod 7 from sliding downwards, and the precision in the operation process is guaranteed.

In operation, the button 5 at the top of the sleeve 1 is pressed, the button 5 drives the rod clamping device 9 to move downwards, the spring 11 is arranged in the telescopic space 903 in the movable part 902 of the rod clamping device 9, the spring 11 moves downwards by means of pressing, and the top of the push rod 7 is not fixed, so that the push rods 7 at the centers of the two rod clamping devices 9 are driven to move downwards, and the push rods 7 are fixed at the current position by the fixing of the extrusion sleeve 12 and the rubber ring. When moved down to the set position, the button 5 is released and the lever catch 9 springs back to the original position by the elasticity of the spring 11. Due to the fixation of the squeezer and the rubber ring, the push rod 7 cannot move upwards along with the rebound of the rod clamping device 9. This operation enables the push rod 7 to be moved down a specific distance with each depression. The push rod 7 moves downwards, namely the piston 6 moves downwards, and the piston 6 moves downwards to push the bone particles in the sleeve 1 to flow out from the feed port 2 for bone particle implantation.

The feed inlet 2 of the sleeve 1 forms an arc-shaped blunt transition slightly forwards, after the nerve retractor pulls the dura mater to the inner side, the structure of the outer sleeve 1 avoids damaging surrounding soft tissues, dura mater and nerves when being placed, the long inner diameter of the oval sleeve 1 is 10mm, the short inner diameter is 8mm, the front lower end of the sleeve 1 is provided with a scale, and the scale 1 corresponds to 1cm³The bone grafting amount of the implant is convenient for an operator to record the bone amount of the implant gap.

The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.

Claims

1. The utility model provides a lumbar vertebrae intervertebral bone grafting ware under passageway, includes sleeve and advancing device, advancing device sets up in the sleeve, its characterized in that: the sleeve comprises a feeding hole and a pushing hole, and the pushing device enters from the pushing hole and pushes the material in the sleeve to exit from the feeding hole; the edge of the feed inlet is in arc transition;

2. The inferior lumbar interbody implant of claim 1, wherein: the sleeve is a sleeve with an oval pipe diameter.

3. The inferior lumbar interbody implant of claim 2, wherein: the long inner diameter of the sleeve is 10mm, and the short inner diameter of the sleeve is 8 mm; the inner length of the sleeve is 100 mm.

4. The inferior lumbar interbody implant of claim 1, wherein: two side wings are symmetrically arranged on the outer side surface of the sleeve close to the pushing opening.

5. The inferior lumbar interbody implant of claim 3, wherein: the short inner diameter is perpendicular to the straight line formed by the two flanks.

6. The inferior lumbar interbody implant of claim 1, wherein: the propelling part comprises two symmetrically arranged clamping rod devices and two symmetrically arranged limiting devices, the limiting devices are arranged below the clamping rod devices, and the push rod sequentially penetrates through a gap formed by the two clamping rod devices and a gap formed by the two limiting devices.

7. The inferior lumbar interbody implant of claim 6, wherein: the rod clamping device comprises a supporting part and a movable part connected below the supporting part; a telescopic space is formed between the movable part and the inside of the sleeve, and a spring is arranged in the telescopic space.

8. The inferior lumbar interbody implant of claim 7, wherein: the lower part of the movable part is sleeved with an extrusion sleeve, and the lower edge of the extrusion sleeve is turned outwards in a hook shape.

9. The inferior lumbar interbody implant of claim 8, wherein: the top of the limiting stopper is provided with a boss, and the boss is matched and buckled with the hook-shaped eversion at the lower edge of the extrusion sleeve.

10. The inferior lumbar interbody implant of claim 9, wherein: the button is fixedly connected with the top end of the supporting part.