Adjustable clamping mechanism for Kirschner wire

Abstract

The invention discloses an adjustable clamping mechanism for a Kirschner wire. The adjustable clamping mechanism comprises a collet assembly, a collet control assembly and a clamping radius adjusting assembly, wherein the collet assembly comprises rod-shaped clamping fingers and a clamping finger base; the rod-shaped clamping fingers are adjusted through the clamping radius adjusting assembly, a relative position between the rod-shaped clamping fingers and the clamping finger base is locked along the longitudinal directions of the rod-shaped clamping fingers; and the relative position is the normal-state relative position of a clamping claw. In the adjustable clamping mechanism, a structure in which the rod-shaped clamping fingers are distributed conically is adopted, the relative position between the rod-shaped clamping fingers and the clamping finger base along the longitudinal directions of the rod-shaped clamping fingers is adjustable, and the relative distance between the end parts of the clamping claw formed by rod-shaped clamps is adjustable, so that the clamping radius can be adjusted; the relative distance between the end parts of the clamping claw formed by the rod-shaped clamps is increased along with the increase of the radius of the Kirschner wire, so that high clamping radius adjusting capability is achieved, and the adjustable clamping mechanism has generality specific to Kirschner wires of different specifications; and moreover, the adjustable clamping mechanism is easy and convenient to use, and has high working efficiency.

Description

technical field [0001] The invention relates to a medical device, in particular to a chuck assembly used for a Kirschner wire in a surgical operation. Background technique [0002] Kirschner wire is a commonly used internal fixation material in orthopedics. It is used to fix fractures such as fractures or avulsion fractures. With the development of science and technology, the scope of use is constantly expanding, and the range of specifications and models is gradually increasing. [0003] When Kirschner wires are used, they need to be drilled with a driving mechanism, so a clamping mechanism and a power mechanism for driving the clamping mechanism to rotate are required. In the prior art, the Kirschner wires are clamped on the hollow drill handpiece by a special chuck, and Different operations use Kirschner wires of different specifications, and the clamping radius adjustment range of the mobile phone chuck is limited, which cannot adapt to a wide range of Kirschner wire mod...

AI Technical Summary

Problems solved by technology

[0003] When Kirschner wires are used, they need to be drilled with a driving mechanism, so a clamping mechanism and a power mechanism for driving the clamping mechanism to rotate are required. In the prior art, the Kirschner wires are clamped on the hollow drill handpiece by a special chuck, and Different operations use Kirschner wires of different specifications, and the clamping radius adjustment range of the mobile phone chuck is limited, which cannot adapt to a wide range of Kirschner wire models. Therefore, when used, the mobile phone chuck is not universal and relatively It is common to use multiple handpieces to meet Kirschner wires of different specifications, which is inconvenient to use, and the clamping feel is not good; it greatly reduces the efficiency of the operation

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