Metal intramedullary needle breaking device

Abstract

The invention discloses a metal intramedullary needle breaking device. The metal intramedullary needle breaking device comprises a rotary wrench and a breaking device, wherein the rotary wrench comprises a wrench rod and a first handle, the first handle is sleeved at one end of the wrench rod; the end of wrench rod deviating from one end of the first handle is convexly extended with an inner octagonal tube in turn, the breaking device comprises a connecting rod, an inner sleeve, a shearing body and a locking nut, wherein the inner sleeve and the shearing body are sealing cylindrical structure,the inner sleeve is rotationally fixed in the shearing body through the locking nut, the connecting rod is vertically fixed on the shearing outer wall, one end of the inner sleeve near the locking nut is convexly extended with an octagonal boss corresponding to the inner octagonal sleeve, the octagonal boss is protruded from the locking nut, the bottom part of the inner sleeve is provided with aplurality of stress holes, the bottom of the shearing body is provided with a plurality of shearing holes, and the centers of the stress holes and the center of the center of the shearing holes are onthe same circumference. The metal intramedullary needle breaking device is suitable for metal intramedullary needles with different specifications and is simple to operate.

Description

technical field [0001] This application relates to a novel device and technology for first aid and rehabilitation, in particular to a metal intramedullary needle rod breaker. Background technique [0002] As a commonly used internal fixation material in orthopedics, metal intramedullary nails generally have a length of about 20 centimeters and several specifications with diameters ranging from 0.5 to 2 millimeters. It is used to fix small fractures or avulsion fractures and other fractures with low stress. It is also often used in the fixation of temporary fracture blocks in orthopedic surgery. Due to its wide application, the maximum diameter of metal intramedullary nails gradually increases to 4 mm. With the addition of external fixation brackets, external fixation locking nails are used to fix emergency large fractures such as pelvic fractures and calcaneal fractures. And when the doctor implants the metal intramedullary needle, the rod breaking function must be carried ...

AI Technical Summary

Problems solved by technology

When the doctor implants the metal intramedullary needle, he must use medical instruments and tools to perform the rod breaking function. The existing rod breaking device cannot adapt to the rod breaking function according to the different specifications and models of the intramedullary needle.

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