CN211512025U

CN211512025U - Special extractor for orthopedic fixing screws

Info

Publication number: CN211512025U
Application number: CN201921750967.6U
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Jilin Boer Medical Technology Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-09-18
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a special extractor of orthopedics set screw, which comprises a housin, the up-and-down terminal surface symmetry of casing is equipped with first round hole, the inside slidable mounting of first round hole has T shape pole, the upper end fixed mounting of T shape pole has the disc, the bilateral symmetry of disc is equipped with first open slot, the inner wall symmetry of first open slot is equipped with the second open slot, the bottom face fixedly connected with spill base of second open slot, the inside slidable mounting of second open slot has the bracing piece, the inboard fixedly connected with telescopic link of bracing piece, the surface sliding of telescopic link is connected with first spring, sliding connection between telescopic link and the spill base, the inside up-and-down lateral symmetry of casing is equipped with rotates the groove, be equipped with the spout between the rotation groove. This special extractor of orthopedics set screw can effectually dismantle the screw nail, and conveniently change the screwdriver for dismantle different types of screw.

Description

Special extractor for orthopedic fixing screws

Technical Field

The utility model relates to the technical field of medical equipment, specifically a special extractor of orthopedics setscrew.

Background

As is well known, with the rapid development of science and technology in China, the medical technology is more and more advanced nowadays, the technique of fixing injured bones by steel plates is more and more mature, and after a patient is cured, screws in the body need to be detached.

And the common screw disassembling instrument can not effectively disassemble the fixed screw, can not replace the screwdriver and is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special extractor of orthopedics set screw to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the special extractor for the orthopedic fixing screws comprises a shell, wherein first round holes are symmetrically formed in the upper end surface and the lower end surface of the shell, a T-shaped rod is slidably mounted inside the first round holes, a disc is fixedly mounted at the upper end of the T-shaped rod, first open grooves are symmetrically formed in two sides of the disc, second open grooves are symmetrically formed in the inner walls of the first open grooves, concave bases are fixedly connected to the bottom end surfaces of the second open grooves, a supporting rod is slidably mounted inside the second open grooves, and a rotating ball is slidably mounted in the middle of the supporting rod;

the inner side of the supporting rod is fixedly connected with a telescopic rod, the surface of the telescopic rod is connected with a first spring in a sliding manner, and the telescopic rod is connected with the concave base in a sliding manner;

the inside bilateral symmetry of casing is equipped with the rotation groove from top to bottom, be equipped with the spout between the rotation groove, sliding connection between rotation groove and the disc.

Preferably, the bottom end face of the rotating groove is provided with a semicircular groove, and the semicircular groove is connected with the rotating ball in a sliding manner.

Preferably, the lower end of the T-shaped rod is fixedly connected with an elastic concave seat, and a screwdriver is slidably mounted in the elastic concave seat.

Preferably, the bilateral symmetry fixedly connected with semicircle ring of elasticity spill seat, the equal fixed mounting of terminal surface of semicircle ring has the kelly, the surface of kelly is equipped with the second round hole.

Preferably, the opening part of the second round hole is symmetrically and fixedly provided with limiting blocks, the baffle is symmetrically and slidably arranged inside the second round hole, a second spring is fixedly connected between the baffles, and the connecting rod is fixedly arranged on the outer side of the baffle.

Preferably, the outside slidable mounting of kelly has the sleeve, telescopic upper and lower side equidistance is equipped with the third round hole, sliding connection between connecting rod and the third round hole.

Compared with the prior art, the beneficial effects of the utility model are that: this special extractor of orthopedics set screw can effectually dismantle the screw nail, and conveniently change the screwdriver for dismantle different types of screw.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of point B of FIG. 2 according to the present invention;

FIG. 4 is a schematic structural view of the semicircular ring of the present invention;

fig. 5 is a schematic view of the connection between the clamping rod and the sleeve according to the present invention.

In the figure: the novel screw driver comprises a shell 1, a first circular hole 2, a 3T-shaped rod, a 4 disc, a first open slot 5, a second open slot 6, a concave base 7, a support rod 8, a rotating ball 9, a telescopic rod 10, a first spring 11, a rotating slot 12, a sliding slot 13, a semicircular slot 14, an elastic concave seat 15, a screwdriver 16, a semicircular ring 17, a clamping rod 18, a second circular hole 19, a limiting block 20, a baffle 21, a second spring 22, a connecting rod 23, a sleeve 24 and a third circular hole 25.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a special extractor for orthopedic fixing screws comprises a shell 1, wherein the upper end surface and the lower end surface of the shell 1 are symmetrically provided with first round holes 2, a T-shaped rod 3 is slidably mounted inside the first round holes 2, the upper end of the T-shaped rod 3 is fixedly provided with a disc 4, two sides of the disc 4 are symmetrically provided with first open grooves 5, the inner walls of the first open grooves 5 are symmetrically provided with second open grooves 6, the bottom end surfaces of the second open grooves 6 are fixedly connected with concave bases 7, supporting rods 8 are slidably mounted inside the second open grooves 6, and rotating balls 9 are slidably mounted in the middle positions of the supporting rods 8;

the inner side of the supporting rod 8 is fixedly connected with a telescopic rod 10, the surface of the telescopic rod 10 is connected with a first spring 11 in a sliding manner, and the telescopic rod 10 is connected with the concave base 7 in a sliding manner;

the upper side and the lower side of the interior of the shell 1 are symmetrically provided with rotating grooves 12, sliding grooves 13 are arranged between the rotating grooves 12, and the rotating grooves 12 are connected with the disc 4 in a sliding manner;

a semicircular groove 14 is formed in the bottom end face of the rotating groove 12, and the semicircular groove 14 is connected with the rotating ball 9 in a sliding mode, so that the rotating ball 9 can roll in the semicircular groove 14;

the lower end of the T-shaped rod 3 is fixedly connected with an elastic concave seat 15, and a screwdriver 16 is slidably arranged in the elastic concave seat 15, so that the screwdriver 16 is convenient to disassemble;

the two sides of the elastic concave seat 15 are symmetrically and fixedly connected with semicircular rings 17, the end surfaces of the semicircular rings 17 are fixedly provided with clamping rods 18, and the surfaces of the clamping rods 18 are provided with second round holes 19, so that the baffle 21 can be conveniently installed;

limiting blocks 20 are symmetrically and fixedly installed at the opening of the second round hole 19, baffle plates 21 are symmetrically and slidably installed inside the second round hole 19, a second spring 22 is fixedly connected between the baffle plates 21, and a connecting rod 23 is fixedly installed on the outer sides of the baffle plates 21, so that the baffle plates 21 can move in the second round hole 19;

the outside slidable mounting of kelly 18 has sleeve 24, and the upper and lower side equidistance of sleeve 24 is equipped with third round hole 25, sliding connection between connecting rod 23 and the third round hole 25 for connecting rod 23 can remove in third round hole 25.

The utility model discloses when concrete implementation: when the screw needs to be disassembled, the T-shaped rod 3 is pressed downwards to exert force, so that the T-shaped rod 3 moves downwards in the first round hole 2, the disc 4 moves downwards in the shell 1 under the action of the T-shaped rod 3, at the moment, the inner wall of the semicircular groove 14 extrudes the rotating ball 9, so that the rotating ball 9 moves towards the inside of the first open groove 5, the support rod 8 is forced to move towards the inside of the second open groove 6, the telescopic rod 10 moves towards the inner side along the inner wall of the concave base 7, the first spring 11 is forced to compress, finally, the rotating ball 9 is separated from the semicircular groove 14 and moves along the inner wall of the sliding groove 13 under the action of force, enters the rotating groove 12 at the lower side of the shell 1, the first spring 11 is not forced to recover and deform, the telescopic rod 10 is pushed to move towards the outer side, finally, the rotating ball 9 resets, at the moment, the screwdriver 16 is meshed with the, the bracing piece 8 atress removes to second open slot 6 is inside, first spring 11 atress compression, finally whole is in stable rotation state, thereby take off the screw, when needs change screwdriver 16, press the both sides of connecting rod 23 hard to the centre, make baffle 21 atress draw close gradually in second round hole 19, second spring 22 atress compression, connecting rod 23 slowly breaks away from third round hole 25, when second spring 22 compression is extremely close, connecting rod 23 breaks away from third round hole 25, elasticity spill seat 15 is no longer atress and resumes deformation, take off screwdriver 16 can, and connecting rod 23 moves along sleeve 24 inner wall under the promotion of elasticity spill seat 15, and enter in the third round hole 25 in the sleeve 24 outside, second spring 22 resumes deformation, promote baffle 21, make connecting rod 23 fixed to third round hole 25.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a special extractor of orthopedics setscrew, includes casing (1), its characterized in that: the upper end face and the lower end face of the shell (1) are symmetrically provided with first round holes (2), a T-shaped rod (3) is arranged inside the first round holes (2) in a sliding mode, a disc (4) is fixedly arranged at the upper end of the T-shaped rod (3), first open grooves (5) are symmetrically arranged on two sides of the disc (4), second open grooves (6) are symmetrically arranged on the inner wall of the first open grooves (5), the bottom end face of each second open groove (6) is fixedly connected with a concave base (7), supporting rods (8) are slidably arranged inside the second open grooves (6), and rotating balls (9) are slidably arranged in the middle positions of the supporting rods (8);

the inner side of the supporting rod (8) is fixedly connected with a telescopic rod (10), the surface of the telescopic rod (10) is connected with a first spring (11) in a sliding manner, and the telescopic rod (10) is connected with the concave base (7) in a sliding manner;

the upper side and the lower side of the interior of the shell (1) are symmetrically provided with rotating grooves (12), sliding grooves (13) are arranged between the rotating grooves (12), and the rotating grooves (12) are connected with the disc (4) in a sliding mode.

2. The special extractor for orthopedic fixation screws of claim 1, wherein: the bottom end face of the rotating groove (12) is provided with a semicircular groove (14), and the semicircular groove (14) is connected with the rotating ball (9) in a sliding mode.

3. The special extractor for orthopedic fixation screws of claim 1, wherein: the lower end of the T-shaped rod (3) is fixedly connected with an elastic concave seat (15), and a screwdriver (16) is slidably mounted inside the elastic concave seat (15).

4. The special extractor of the orthopedic fixation screw according to claim 3, wherein: the bilateral symmetry fixedly connected with semicircle ring (17) of elasticity spill seat (15), the equal fixed mounting of terminal surface of semicircle ring (17) has kelly (18), the surface of kelly (18) is equipped with second round hole (19).

5. The special extractor of the orthopedic fixation screw according to claim 4, wherein: the equal symmetry fixed mounting of opening part of second round hole (19) has stopper (20), the inside symmetry slidable mounting of second round hole (19) has baffle (21), fixedly connected with second spring (22) between baffle (21), the outside fixed mounting of baffle (21) has connecting rod (23).

6. The special extractor of the orthopedic fixation screw according to claim 5, wherein: the outside slidable mounting of kelly (18) has sleeve (24), the upper and lower side equidistance of sleeve (24) is equipped with third round hole (25), sliding connection between connecting rod (23) and third round hole (25).