CN212186666U

CN212186666U - Extractor for orthopedic fixation screw

Info

Publication number: CN212186666U
Application number: CN202020169290.3U
Authority: CN
Inventors: 郭道瑞; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2020-12-22
Anticipated expiration: 2030-02-14

Abstract

The utility model belongs to the field of medical equipment, in particular to an orthopedic fixed screw extractor, which aims at the problem that most existing orthopedic fixed screws are only simply used for extracting screws in bodies of patients by using a screwdriver, once the screws are broken, the operation cannot be continued, the operation is seriously affected, and the pain of the patients is increased, the utility model provides a scheme which comprises a fixed seat, wherein an installation cavity is arranged on the fixed seat, a rotating shaft is rotatably connected on the inner wall of one side of the installation cavity, one end of the rotating shaft extends to one side of the fixed seat, the utility model has reasonable structure and simple operation, and the first clamping plate and the second clamping plate can be moved towards the direction close to each other by rotating the rotating shaft, thereby the screw clamp can be fixed, the screws can be conveniently extracted, even the screws are broken, the operation is not affected, and the pain of the patient is relieved.

Description

Extractor for orthopedic fixation screw

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an orthopedic fixed screw extractor.

Background

With the continuous progress of science and technology, the medical technology is getting higher and higher, and more cases are treated by the internal fixation of the steel plate, and the screws inside the body of a patient are required to be taken out in the orthopedic clinical operation.

At present, most screws for orthopedic fixation are taken out only by a screwdriver, once the screws are broken, the operation cannot be continued, the operation is seriously affected, and the pain of a patient is increased, so that the orthopedic fixation screw extractor is provided for solving the problems.

Disclosure of Invention

The utility model aims at solving the existing orthopedics among the prior art and fixing taking out of screw mostly just the simple internal screw of disease of utilizing the screwdriver to take out, in case the cracked condition of screw appears, then can't continue to operate, seriously influence going on of operation, increase painful shortcoming for the patient, and the orthopedics set screw extractor that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the orthopedic fixed screw extractor comprises a fixed seat, wherein an installation cavity is arranged on the fixed seat, a rotating shaft is rotatably connected to the inner wall of one side of the installation cavity, one end of the rotating shaft extends to one side of the fixed seat, a moving plate is connected to the rotating shaft in a threaded manner, a first clamping plate is fixedly connected to the bottom of the moving plate, a sliding plate is slidably connected to the inner wall of one side of the installation cavity, a first connecting rod is rotatably connected to one side of the moving plate, one end of the first connecting rod is rotatably connected to one side of the sliding plate, a second connecting rod is rotatably connected to the bottom of the sliding plate, a second clamping plate is rotatably connected to one end of the second connecting rod, a through hole communicated with the bottom of the fixed seat is formed in the inner wall of the bottom of the installation cavity, and the bottoms of the first clamping plate and the second clamping plate, the top fixedly connected with fixed column of fixing base, the top fixedly connected with handle of fixed column can make first clamp plate and second clamp plate remove to the direction that is close to each other through rotating the pivot to can fix the screw clamp fastening, conveniently take out the screw, even the screw fracture also can take out, can not influence going on of operation, alleviateed patient's misery.

Preferably, the inner wall of the top of the installation cavity is connected with a limiting plate in a sliding mode, the bottom of the limiting plate is fixedly connected with the top of the moving plate, and the limiting plate can enable the moving plate to move stably and cannot deviate.

Preferably, one side fixedly connected with telescopic link of first clamp plate, one end and one side fixed connection of second clamp plate of telescopic link, the telescopic link can support the second clamp plate, and can not take place offset.

Preferably, a spring is fixedly connected to the inner wall of the bottom of the mounting chamber, the top end of the spring is fixedly connected to the bottom of the sliding plate, and the spring can provide restoring power for the sliding plate.

Preferably, a plurality of anti-skidding lugs of the equal fixedly connected with in one side that first clamp plate and second clamp plate are close to each other, anti-skidding lug's quantity is three to five, and anti-skidding lug can increase frictional force for first clamp plate and second clamp plate can be more firm to the fixed of screw, can not take place to drop, conveniently take out the screw.

The utility model discloses in, orthopedics fixed screw extractor, owing to set up the pivot, can make the movable plate remove through rotating the pivot, the movable plate can drive first pinch-off blades and remove, can make the sliding plate downstream under the effect of first connecting rod when the movable plate removes, the sliding plate downstream can make the second pinch-off blades remove to the direction of being close to first pinch-off blades under the effect of second connecting rod, make first pinch-off blades and second pinch-off blades can remove to the direction that is close to each other like this, thereby can press from both sides the screw and press from both sides the fastening, can make the fixing base rotate through rotating the handle, thereby can take out the screw, even the screw fracture can also take out, can not influence going on of operation, patient's misery has been alleviateed.

Owing to set up skid proof block, skid proof block can increase frictional force for first clamp plate and second clamp plate can be more firm to the fixed of screw, can not take place to drop, and the convenience is taken out the screw.

The utility model discloses rational in infrastructure, easy operation can make first clamp plate and second clamp plate remove to the direction that is close to each other through rotating the pivot to can fix the screw clamp fastening, conveniently take out the screw, even the screw fracture also can take out, can not influence going on of operation, alleviateed patient's misery.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of an orthopedic fixation screw extractor according to the present invention;

FIG. 2 is a schematic view of the main cross-sectional structure of the orthopedic fixed screw extractor of the present invention;

fig. 3 is an enlarged schematic structural view of part a of the orthopedic fixation screw extractor of the present invention.

In the figure: the anti-skidding mechanism comprises a fixed seat 1, an installation cavity 2, a rotating shaft 3, a moving plate 4, a first clamping plate 5, a first connecting rod 6, a sliding plate 7, a second connecting rod 8, a second clamping plate 9, a fixed column 10, a handle 11, a limiting plate 12, a telescopic rod 13, a spring 14, an anti-skidding lug 15 and a through hole 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example one

Referring to fig. 1-3, the extractor for orthopedic fixed screws comprises a fixed base 1, a mounting cavity 2 is arranged on the fixed base 1, a rotating shaft 3 is rotatably connected to one side inner wall of the mounting cavity 2, one end of the rotating shaft 3 extends to one side of the fixed base 1, a moving plate 4 is connected to the rotating shaft 3 in a threaded manner, a first clamping plate 5 is fixedly connected to the bottom of the moving plate 4, a sliding plate 7 is slidably connected to one side inner wall of the mounting cavity 2, a first connecting rod 6 is rotatably connected to one side of the moving plate 4, one end of the first connecting rod 6 is rotatably connected to one side of the sliding plate 7, a second connecting rod 8 is rotatably connected to the bottom of the sliding plate 7, a second clamping plate 9 is rotatably connected to one end of the second connecting rod 8, a through hole 16 communicated with the bottom of the fixed base 1 is formed in the inner wall of the bottom of the mounting cavity 2, the bottom of the first, the top of the fixed seat 1 is fixedly connected with a fixed column 10, the top of the fixed column 10 is fixedly connected with a handle 11, the first clamping plate 5 and the second clamping plate 9 can move towards the direction close to each other by rotating the rotating shaft 3, so that a screw clamp can be tightly fixed, the screw can be conveniently taken out, even if the screw is broken, the screw can be taken out, the operation is not influenced, the pain of a patient is relieved, due to the arrangement of the rotating shaft 3, the movable plate 4 can move by rotating the rotating shaft 3, the movable plate 4 can drive the first clamping plate 5 to move, the movable plate 4 can move while the sliding plate 7 moves downwards under the action of the first connecting rod 6, the sliding plate 7 moves downwards under the action of the second connecting rod 8, the second clamping plate 9 can move towards the direction close to the first clamping plate 5, and the first clamping plate 5 and the second clamping plate 9 can move towards the direction close to each other, thereby can press from both sides the screw tight fixedly, can make fixing base 1 rotate through rotating handle 11, thereby can take out the screw, even the screw fracture also can take out, can not influence going on of operation, alleviateed patient's misery, owing to set up skid proof block 15, skid proof block 15 can increase frictional force, makes first clamp plate 5 and second clamp plate 9 can be more firm to the fixed of screw, can not take place to drop, conveniently takes out the screw, the utility model discloses rational in infrastructure, easy operation can make first clamp plate 5 and second clamp plate 9 remove to the direction that is close to each other through rotating pivot 3, thereby can fix the screw clamp fastening, conveniently takes out the screw, even the screw fracture also can take out, can not influence going on of operation, has alleviateed patient's misery.

Example two

The utility model discloses in, sliding connection has limiting plate 12 on the top inner wall of installation cavity 2, the bottom of limiting plate 12 and the top fixed connection of movable plate 4, and limiting plate 12 can make movable plate 4 can the steady movement, can not take place the skew.

The utility model discloses in, one side fixedly connected with telescopic link 13 of first pinch-off blades 5, one end of telescopic link 13 and one side fixed connection of second pinch-off blades 9, telescopic link 13 can support second pinch-off blades 9, and can not take place the offset.

The utility model discloses in, fixedly connected with spring 14 on the bottom inner wall of installation cavity 2, spring 14's top and sliding plate 7's bottom fixed connection, spring 14 can provide reset power to sliding plate 7.

The utility model discloses in, a plurality of skid proof block 15 of the equal fixedly connected with in one side that first clamp plate 5 and second clamp plate 9 are close to each other, skid proof block 15's quantity is three to five, and skid proof block 15 can increase frictional force for first clamp plate 5 and second clamp plate 9 can be more firm to the fixed of screw, can not take place to drop, and the convenience is taken out the screw.

In the utility model, when in specific use, firstly, the medical staff moves the first clamping plate 5 and the second clamping plate 9 to the two sides of the screw to be taken out, then the rotating shaft 3 is rotated, because the rotating shaft 3 is in threaded connection with the moving plate 4, the moving plate 4 can be moved by the rotation of the rotating shaft 3, the moving plate 4 can drive the first clamping plate 5 to move towards the direction close to the second clamping plate 9, the sliding plate 7 can move downwards under the action of the first connecting rod 6 while the moving plate 4 moves, the sliding plate 7 can move downwards under the action of the second connecting rod 8 to enable the second clamping plate 9 to move towards the direction close to the first clamping plate 5, thus the first clamping plate 5 and the second clamping plate 9 can move towards the direction close to each other, thereby the screw can be clamped and fixed, then the rotating shaft 3 is stopped to rotate, then the handle 11 is rotated by the medical staff, the handle 11 can drive the fixing seat 1 to rotate through the fixing column 10, so that the screw can be taken out conveniently and quickly, and the screw can be taken out even if broken.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The orthopedic fixed screw extractor comprises a fixed seat (1) and is characterized in that an installation cavity (2) is arranged on the fixed seat (1), a rotating shaft (3) is rotatably connected to the inner wall of one side of the installation cavity (2), one end of the rotating shaft (3) extends to one side of the fixed seat (1), a movable plate (4) is in threaded connection with the rotating shaft (3), a first clamping plate (5) is fixedly connected to the bottom of the movable plate (4), a sliding plate (7) is slidably connected to the inner wall of one side of the installation cavity (2), a first connecting rod (6) is rotatably connected to one side of the movable plate (4), one end of the first connecting rod (6) is rotatably connected to one side of the sliding plate (7), a second connecting rod (8) is rotatably connected to the bottom of the sliding plate (7), and a second clamping plate (9) is rotatably connected to one end of the second connecting rod (8), the mounting structure is characterized in that a through hole (16) communicated with the bottom of the fixing seat (1) is formed in the inner wall of the bottom of the mounting cavity (2), the bottom of the first clamping plate (5) and the bottom of the second clamping plate (9) both extend to the bottom lower portion of the fixing seat (1), a fixing column (10) is fixedly connected to the top of the fixing seat (1), and a handle (11) is fixedly connected to the top of the fixing column (10).

2. The extractor for fixed screws of orthopedics department according to claim 1, characterized in that the inner wall of the top of the installation chamber (2) is connected with a limit plate (12) in a sliding way, and the bottom of the limit plate (12) is fixedly connected with the top of the movable plate (4).

3. The orthopaedic fixation screw extractor according to claim 1, wherein a telescopic rod (13) is fixedly connected to one side of the first clamping plate (5), and one end of the telescopic rod (13) is fixedly connected to one side of the second clamping plate (9).

4. The orthopaedic fixation screw extractor according to claim 1, wherein a spring (14) is fixedly connected to the bottom inner wall of the mounting chamber (2), the top end of the spring (14) being fixedly connected to the bottom of the slide plate (7).

5. The orthopaedic fixation screw extractor according to claim 1, wherein a plurality of anti-slip protrusions (15) are fixedly connected to each of the sides of the first clamping plate (5) and the second clamping plate (9) that are close to each other, the number of anti-slip protrusions (15) being three to five.