CN213606670U

CN213606670U - Intervertebral bilateral curet

Info

Publication number: CN213606670U
Application number: CN202021676666.6U
Authority: CN
Inventors: 李维铭; 张利; 许延凯
Original assignee: Dragon Crown Medical Co Ltd
Current assignee: Dragon Crown Medical Co Ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-07-06
Anticipated expiration: 2030-08-12
Also published as: WO2022032880A1

Abstract

The utility model provides an intervertebral bilateral curet, the scheme of adoption is: mainly include the sleeve pipe body, the handle, the activity briquetting, the scraper connects, the ejector pin and on, lower scraper, the front end at the sleeve pipe body is fixed to the scraper joint, it connects to go up, two scrapers articulate on the scraper joint down, the rear end at the sleeve pipe body is installed to the handle, the activity briquetting is installed on the handle, the ejector pin passes its front end of sleeve pipe body and passes through link assembly and last, lower scraper is connected, the ejector pin rear portion is connected with the activity briquetting and can reset under the effect of spring, it can drive link assembly make two matched with scrapers do the opening and shutting motion to impel the ejector pin through pressing down the activity briquetting, and the blade of scraper is the cusp and has the radian similar. The effect of improving the scraping efficiency on the premise of ensuring non-excessive cutting can be brought.

Description

Intervertebral bilateral curet

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a bilateral curet between vertebras.

Background

The intervertebral disc fusion is called as the ultimate treatment means for treating intervertebral disc diseases, and is to fuse the upper vertebral body and the lower vertebral body of a diseased intervertebral disc, wherein the treatment method is to place a fusion device made of metal or other implantable human body materials in a focus intervertebral space to support the upper vertebral body and the lower vertebral body, then to implant bones, and finally to fuse the upper vertebral body and the lower vertebral body. The success or failure of the operation is in the fact that whether the upper and lower endplates are treated or not meets the fusion requirement, not only the cartilage layer on the cortical bone is scraped off, but also the cortical bone is protected from being removed too much to affect the strength of the vertebral body.

The existing surgical instruments used clinically are divided into two types, one type is a spoon-shaped curette, the head is spoon-shaped, the operation is that a doctor operates a handle to perform curettage, and the efficiency is low; the second one is the shaped scraper, which is used for transversely placing the scraper larger than the intervertebral space into the intervertebral space, scraping the end plate by utilizing the cutting edges at the two sides of the reamer through rotating the reamer, so that the efficiency is improved, but the hard scraping has the defects of easy excessive cutting of the end plate and incomplete scraping of the size.

Therefore, in order to solve the problems of the two scraping methods, the development of an efficient intervertebral bilateral curet is an urgent problem.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a bilateral curet between vertebras, which can improve the scraping efficiency on the premise of ensuring no excessive excision.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: the utility model provides a two side curettage keys in intervertebral, includes bushing assembly, ejector pin and two scrapers, these two scrapers are respectively for last scraper and lower scraper, go up the scraper and all articulate the preceding tip at bushing assembly with lower scraper, the ejector pin passes bushing assembly, the ejector pin passes through link assembly and is connected with last scraper and lower scraper, the ejector pin can drive link assembly and make two matched with scrapers do and open and close the motion. The upper scraper and the lower scraper are urged to open and close by operating the ejector rod, and when the two scrapers are in a closed state, the size of the two scrapers is smaller than the intervertebral space and the two scrapers are placed in the intervertebral space; after the two scrapers enter the intervertebral space, the two scrapers can be opened by operating the ejector rod until the cutting edges of the upper and lower scrapers are contacted with the intervertebral upper and lower end plates, the upper and lower end plates can be simultaneously scraped by pushing the sleeve pipe assembly to move back and forth, the whole intervertebral disc is completely processed, the efficiency is improved, the opening degree of the upper and lower scrapers can be controlled by controlling the movement of the ejector rod, the cutting depth is further controlled, and excessive cutting is avoided.

Further, the upper scraper and the lower scraper are both provided with a similar radian with the intervertebral end plate. The effects of scraping the intervertebral end plate and avoiding the cutting edge from cutting into the cartilage too deeply are achieved.

Furthermore, the cutting edges of the upper scraper and the lower scraper are provided with a row of tooth-shaped structures. So as to facilitate the scraping of the scraper on the intervertebral end plate.

Further, link assembly includes support arm and lower support arm, and when the scraper was in the state of opening, according to the upper and lower position of this state, the upper portion of going up the support arm is articulated with last scraper, the lower part of going up the support arm is articulated with the ejector pin, the upper portion and the ejector pin of lower support arm are articulated, the lower part and the lower scraper of lower support arm are articulated. The function of pushing and pulling the mandril to drive the upper scraper and the lower scraper to open and close is realized by forming a simple connecting rod mechanism.

Further, the sleeve assembly comprises a sleeve body, a handle and a scraper joint, the scraper joint is fixed at the front end of the sleeve body, the rear portions of the upper scraper and the lower scraper are connected with the scraper joint through pivots, and the handle is mounted at the rear portion of the handle. The scraper joint is utilized to realize the installation and the hinging of the scraper, and the convenience of operation is realized through the handle.

Furthermore, a movable pressing block is installed on the handle, the rear portion of the ejector rod is connected with the movable pressing block, and a reset assembly is further arranged on the movable pressing block. The push rod is pushed to move forwards by pressing the movable pressing block, so that the scraper is opened, the movable pressing block is reset by the reset assembly, and the push rod is driven to reset so that the scraper is closed carefully.

Further, the reset assembly comprises a spring, the ejector rod penetrates through the spring, one end of the spring is abutted to the movable pressing block, and the other end of the spring is abutted to the inner structure of the handle. The reset function of the movable pressing block is realized.

Furthermore, the rear end of the ejector rod is fixedly connected to the movable pressing block through a nut, and a groove used for abutting against and containing part of the spring is formed in the handle.

Furthermore, the front end of the ejector rod is located in the middle between the upper scraper and the lower scraper, a hinge groove is formed in the front end of the ejector rod, pivots are fixed on two side walls of the hinge groove, and the upper support arm and the lower support arm are hinged to the pivots.

Furthermore, the inner sides of the upper scraper and the lower scraper are provided with accommodating grooves for accommodating the front end structure of the ejector rod and the supporting arm.

According to the technical scheme, the utility model has the advantages of it is following:

the scheme provides an intervertebral bilateral curet, scrapers can be driven to move by pressing a movable pressing block, and when the two scrapers are in a closed state, the size of the two scrapers is smaller than that of an intervertebral space and the two scrapers are placed in the intervertebral space; when the two scrapers enter the intervertebral space, the two scrapers can be opened by pressing the movable pressing block to push the ejector rod until the cutting edges of the upper and lower scrapers are contacted with the upper and lower intervertebral end plates, the upper and lower end plates can be simultaneously scraped by pushing the handle to move back and forth in a reciprocating manner, the whole intervertebral disc is completely treated, the efficiency is improved, and the scrapers can be automatically closed by automatic resetting of the springs; and, can come the control upper and lower scraper degree of opening through the removal of control ejector pin, and then realize controlling cutting depth, avoid excessively excising.

Drawings

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

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

Fig. 2 is a schematic diagram showing a front structure according to an embodiment of the present invention.

Fig. 3 is a schematic diagram showing a rear structure according to an embodiment of the present invention.

Fig. 4 is a state diagram when the doctor blade is closed.

Fig. 5 is a state diagram when the blade is expanded.

In the figure, the device comprises a sleeve body 1, a handle 2, a movable pressing block 3, a scraper joint 4, a mandril 5, an upper scraper 6, a lower scraper 7, an upper supporting arm 8, a lower supporting arm 9, a lower supporting arm 10, a spring 11 and a screw cap.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.

As shown in fig. 1-5, the utility model provides an intervertebral bilateral curette, which mainly comprises a sleeve body 1, a handle 2, a movable pressing block 3, a mandril 5, two scraper joints 4 and two scrapers, wherein the two scrapers are respectively an upper scraper 6 and a lower scraper 7, the handle 2 is fixed at the rear end of the sleeve body 1, the movable pressing block 3 is arranged at the rear part of the handle 2 and can slide in the handle 2, the scraper joint 4 is welded and fixed at the front end of the sleeve body 1, the sleeve joint is provided with two pivot shafts which are arranged up and down, the rear parts of the upper scraper 6 and the lower scraper 7 are respectively articulated on the two pivot shafts, the mandril 5 passes through the sleeve body 1, the front end of the mandril 5 passes through the scraper joint 4 and is positioned between the two scrapers, the front ends of the scrapers are connected with the upper scraper 6 and the lower scraper 7 through a connecting rod assembly, the mandril 5 can drive, the upper part of the upper support arm 8 is hinged with the upper scraper 6, the lower part of the upper support arm 8 is hinged with the ejector rod 5, the upper part of the lower support arm 9 is hinged with the ejector rod 5, the lower part of the lower support arm 9 is hinged with the lower scraper 7, and specifically, a columnar structure at the end part of the support arm is rotatably arranged in a groove structure at the inner side of the scraper, so that the support arm is hinged with the scraper; the front end of the ejector rod 5 is provided with a hinge groove, two side walls of the hinge groove are fixed with pivots, and an upper support arm 8 and a lower support arm 9 are hinged on the pivots to realize the hinging of the support arms and the ejector rod 5. And the inner sides of the upper scraper 6 and the lower scraper 7 are also provided with accommodating grooves for accommodating the front end structure of the mandril 5 and the supporting arms, so that the closing of the scrapers is facilitated.

The rear part of the ejector rod 5 penetrates through the handle 2 to be connected with the movable pressing block 3, and is specifically fixedly connected to the movable pressing block 3 through a screw cap 11. In order to realize that the scraper is in a closed state at normal time, a spring 10 is further arranged, a groove for abutting and accommodating a part of the spring 10 is arranged in the handle 2, one end of the spring 10 is grounded at the bottom of the groove, the other end of the spring 10 abuts against the movable pressing block 3, and the ejector rod 5 penetrates through the spring 10.

In addition, the upper scraper 6 and the lower scraper 7 are provided with radians which are used for forming the matching of the intervertebral end plate, and the cutting edges of the upper scraper 6 and the lower scraper 7 are of a row of tooth-shaped structures, so that the effects of scraping the intervertebral end plate and avoiding the cutting edges from cutting into the cartilage deeply are achieved.

The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings, if any, are used to distinguish relative relationships in position, and are not necessarily qualitative. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

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. The utility model provides a two side curettage spoon in intervertebral, its characterized in that includes bushing assembly, ejector pin (5) and two scrapers, these two scrapers are respectively scraper (6) and lower scraper (7), go up scraper (6) and lower scraper (7) and all articulate the preceding tip at bushing assembly, ejector pin (5) pass bushing assembly, ejector pin (5) are connected with last scraper (6) and lower scraper (7) through link assembly, ejector pin (5) can drive link assembly and make two matched with scrapers do the motion of opening and shutting.

2. The bilateral interspinous spatula as claimed in claim 1, wherein the upper (6) and lower (7) blades each have a curvature thereon for forming a fit with the end plates of the spine.

3. The intervertebral bilateral curette of claim 2, wherein the cutting edges of the upper (6) and lower (7) blades are provided with a row of teeth-like formations.

4. The bilateral intervertebral curette according to any one of claims 1 to 3, wherein the linkage assembly comprises an upper support arm (8) and a lower support arm (9), wherein the front part of the upper support arm (8) is hinged to the upper scraper (6), the rear part of the upper support arm (8) is hinged to the mandril (5), the front part of the lower support arm (9) is hinged to the lower scraper (7), and the rear part of the lower support arm (9) is hinged to the mandril (5).

5. The intervertebral bilateral curette of any one of claims 1 to 3, wherein the cannula assembly comprises a cannula body (1), a handle (2) and a scraper joint (4), the scraper joint (4) is fixed at the front end of the cannula body (1), the rear parts of the upper scraper (6) and the lower scraper (7) are both pivotally connected with the scraper joint (4), and the handle (2) is mounted at the rear part of the cannula body (1).

6. The intervertebral bilateral curet according to claim 5, wherein the handle (2) is provided with a movable pressing block (3), the rear part of the mandril (5) is connected with the movable pressing block (3), and the movable pressing block (3) is further provided with a resetting component.

7. The bilateral intervertebral curette as claimed in claim 6, wherein the return assembly comprises a spring (10), the push rod (5) passes through the spring (10), one end of the spring (10) abuts against the movable pressing block (3), and the other end abuts against the internal structure of the handle (2).

8. The intervertebral bilateral curette as claimed in claim 7, wherein the rear end of the mandril (5) is fixedly connected to the movable pressing block (3) through a nut (11), and the handle (2) is provided with a groove for abutting against and accommodating a part of the spring (10).

9. The intervertebral bilateral curette as claimed in claim 4, wherein the front end of the mandril (5) is located at the middle position between the upper scraper (6) and the lower scraper (7), the front end of the mandril (5) is provided with a hinge groove, two side walls of the hinge groove are fixed with pivots, and the upper support arm (8) and the lower support arm (9) are hinged on the pivots.

10. The intervertebral bilateral curette of claim 6, wherein the inner sides of the upper scraper (6) and the lower scraper (7) are provided with accommodating grooves for accommodating the front end structure and the supporting arms of the mandril.