CN215606177U

CN215606177U - Kirschner wire with protection device

Info

Publication number: CN215606177U
Application number: CN202121156390.3U
Authority: CN
Inventors: 江芳浩; 江泽华; 李熊业
Original assignee: South China Hospital Affiliated To Shenzhen University
Current assignee: South China Hospital Affiliated To Shenzhen University
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2022-01-25
Anticipated expiration: 2031-05-27

Abstract

The utility model discloses a Kirschner wire with a protection device, which comprises a needle body for fixing fracture and a tail sleeve device for supporting, wherein a spring is arranged in the tail sleeve device, a rotating device is arranged below the spring, and a telescopic device for drawing and applying force is arranged below the rotating device. According to the Kirschner wire with the protection device, the Kirschner wire is prevented from always protruding outwards through the arrangement of telescopic access, so that the safety is improved; the handle body is retracted into the needle tail sleeve, so that the handle body is protected, and the smoothness of the outside is ensured; through the telescopic setting of the pressing spring, the convenience of operation and use is increased.

Description

Kirschner wire with protection device

Technical Field

The utility model belongs to the field of medical instruments, and particularly relates to a Kirschner wire with a protection device.

Background

The kirschner wire is a commonly used internal fixation material in orthopedics, is used for fixing short fractures or avulsion fractures and other fractures with low stress, and is also used for fixing temporary fracture blocks in orthopedic operations. Due to wide application, the maximum diameter of the Kirschner wire is gradually increased to 4 mm, and the Kirschner wire is matched with an external fixing locking nail to fix emergent large fractures such as pelvic fracture, calcaneal fracture and the like along with the external fixing support.

However, in the prior art, the kirschner wire is generally exposed after being fixed and is convenient to pull out, which causes that: 1. the arrangement of telescopic access is not adopted, and the Kirschner wire always protrudes out, so that the safety is reduced; 2. the handle body cannot be protected and the smoothness of the outside cannot be ensured without the arrangement that the handle body retracts into the needle tail sleeve; 3. the arrangement that the pressing spring stretches is omitted, and convenience in operation and use is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a kirschner wire with a protection device to solve the problems in the background technology.

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

a Kirschner wire with a protection device comprises a needle body for fixing fracture and a tail sleeve device for supporting, wherein a spring is installed in the tail sleeve device, a rotating device is arranged below the spring, and a telescopic device for drawing and applying force is installed below the rotating device; the telescopic device comprises a handle body, wherein two platforms are symmetrically arranged at one end of the handle body, a plurality of anti-skid grains are uniformly distributed on the surfaces of the platforms, and a screw hole is formed in the middle of one end, far away from the platforms, of the handle body; the rotating device comprises a driving gear, a plurality of guide plates are uniformly distributed on the circumference of the driving gear, and a screw is arranged below the driving gear; the tail sleeve device comprises a needle tail sleeve, a driven gear is arranged in the needle tail sleeve, a plurality of sliding grooves are uniformly distributed on the circumference of the driven gear, the driven gear is in a hollow circular sleeve shape, and the driven gear is meshed with the driving gear in an axial tooth manner.

Further: the needle body and the needle tail sleeve are both made of 316 stainless steel materials.

The corrosion resistance of the needle body and the needle tail sleeve is ensured.

Further: the needle body and the needle tail sleeve are in sealed threaded connection.

The needle tail sleeve is convenient to disassemble and assemble for maintenance.

Further: the guide plate and the driving gear are integrally formed.

The guide plate is firm and firm.

The working principle is as follows: the handle body is connected to the screw rod through the screw hole, shrinks in the needle tail sleeve, and when the needle body needs to be pulled out, the handle body is pressed, the driven gear and the driving gear are meshed and rotate, the guide plate slides into the sliding groove under the pushing of the spring, the guide plate moves along the sliding groove to push the handle body to stretch out the needle tail sleeve, and the anti-slip threads on the end surface of the handle body are clamped by pliers to integrally pull out the anti-slip threads.

Compared with the prior art, the utility model has the beneficial effects that:

1. by the arrangement of telescopic access, the Kirschner wire is prevented from always protruding out, and the safety is improved;

2. the handle body is retracted into the needle tail sleeve, so that the handle body is protected, and the smoothness of the outside is ensured;

3. through the telescopic setting of the pressing spring, the convenience of operation and use is increased.

Drawings

FIG. 1 is an exploded elevational view of a K-wire with a protective device in accordance with the present invention;

FIG. 2 is a schematic view of a retractable device of a Kirschner wire with a protective device according to the present invention;

FIG. 3 is a front half-sectional view of a retractable device of a Kirschner wire with a protective device according to the present invention;

FIG. 4 is a front cross-sectional view of a device for rotating the K-wire with the protective device according to the present invention;

fig. 5 is a front cross-sectional view of a tail sleeve device of a kirschner wire with a protective device.

In the reference symbols: 1. a needle body; 2. a spring; 3. rotating the device; 301. a driving gear; 302. a guide plate; 303. a screw; 4. a tail sleeve device; 401. a needle tail sleeve; 402. a driven gear; 403. a chute; 5. a telescoping device; 501. a handle body; 502. a platform; 503. anti-skid lines; 504. and a screw hole.

Detailed Description

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

Referring to fig. 1-5, a kirschner wire with a protective device comprises a needle body 1 for fixing fracture and a tail sleeve device 4 for supporting, wherein a spring 2 is installed in the tail sleeve device 4, a rotating device 3 is arranged below the spring 2, and a telescopic device 5 for drawing and applying force is installed below the rotating device 3; the telescopic device 5 comprises a handle body 501, two platforms 502 are symmetrically arranged at one end of the handle body 501, a plurality of anti-skid grains 503 are uniformly distributed on the surface of each platform 502, and a screw hole 504 is arranged in the middle of one end of the handle body 501, which is far away from each platform 502; the rotating device 3 comprises a driving gear 301, a plurality of guide plates 302 are uniformly distributed on the circumference of the driving gear 301, and a screw 303 is arranged below the driving gear 301; the tail sleeve device 4 comprises a needle tail sleeve 401, a driven gear 402 is arranged in the needle tail sleeve 401, a plurality of sliding grooves 403 are uniformly distributed on the circumference of the driven gear 402, the driven gear 402 is in a hollow circular sleeve shape, and the driven gear 402 is meshed with the driving gear 301 in an axial tooth manner.

Further: the needle body 1 and the needle tail sleeve 401 are both made of 316 stainless steel materials, so that the corrosion resistance of the needle body 1 and the needle tail sleeve 401 is ensured; the needle body 1 is in sealed threaded connection with the needle tail sleeve 401, so that the needle tail sleeve 401 can be conveniently disassembled and assembled for maintenance; the guide plate 302 and the driving gear 301 are integrally formed, so that the guide plate 302 is firm and firm.

The working principle is as follows: the whole body is driven into a bone of a patient to be fixed, at ordinary times, the spring 2 pushes the driving gear 301 to enable the guide plate 302 to be clamped at one end of the driven gear 402, the handle body 501 is connected to the screw rod 303 through the screw hole 504 and is contracted in the needle tail sleeve 401, when the needle body 1 needs to be pulled out, the handle body 501 is pressed, the driven gear 402 and the driving gear 301 are meshed and rotated, the guide plate 302 slides into the sliding groove 403 under the pushing of the spring 2 and moves along the sliding groove 403 to push the handle body 501 to extend out of the needle tail sleeve 401, and the whole body is pulled out through the anti-sliding grains 503 on the end surface of the handle body 501 clamped by the pliers.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take protection device's kirschner wire, includes needle body (1) that is used for fixed fracture, its characterized in that: the device is characterized by further comprising a tail sleeve device (4) used for supporting, wherein a spring (2) is installed in the tail sleeve device (4), a rotating device (3) is arranged below the spring (2), and a telescopic device (5) used for drawing and applying force is installed below the rotating device (3);

the telescopic device (5) comprises a handle body (501), two platforms (502) are symmetrically arranged at one end of the handle body (501), a plurality of anti-skid grains (503) are uniformly distributed on the surface of each platform (502), and a screw hole (504) is formed in the middle of one end, far away from the platform (502), of the handle body (501);

the rotating device (3) comprises a driving gear (301), a plurality of guide plates (302) are uniformly distributed on the circumference of the driving gear (301), and a screw (303) is arranged below the driving gear (301);

the needle tail sleeve device (4) comprises a needle tail sleeve (401), a driven gear (402) is arranged in the needle tail sleeve (401), a plurality of sliding grooves (403) are uniformly distributed on the circumference of the driven gear (402), the driven gear (402) is in a hollow circular sleeve shape, and the driven gear (402) is meshed with the driving gear (301) in an axial tooth manner.

2. The kirschner wire with the protection device according to claim 1, wherein: the needle body (1) and the needle tail sleeve (401) are both made of 316 stainless steel materials.

3. The kirschner wire with the protection device according to claim 1, wherein: the needle body (1) is in sealed threaded connection with the needle tail sleeve (401).

4. The kirschner wire with the protection device according to claim 1, wherein: the guide plate (302) and the driving gear (301) are integrally formed.