Direct entering type Kirschner wire propeller for orthopaedics

Abstract

The invention discloses a direct entering type Kirschner wire propeller for orthopaedics. The direct entering type Kirschner wire propeller comprises a propelling unit, an accommodating pipe and a fixing and locking unit for fixing a Kirschner wire, wherein the propelling unit comprises a fixing sleeve, a coarse adjusting sleeve, a fine adjusting sleeve, a screw rod and a transmission push rod; the screw rod and the transmission push rod are in mutual and spiral connection and cooperation; a flange body is arranged at the rear end of the screw rod; the screw rod and the transmission push rod are arranged in the fixing sleeve; the transmission push rod can be in linear expanding and contracting displacement relative to the fixing sleeve; the left end surface of the flange body and the rightend surface of the fixing sleeve are in propping cooperation; the coarse adjusting sleeve is arranged at the right end of the fixing sleeve in a sleeving manner; the inner periphery wall of the coarse adjusting sleeve is in accurate friction cooperation with the outer periphery of the flange body; the fine adjusting sleeve is connected to a protruding column on the right end surface of the flangebody; the inner periphery wall of the fine adjusting sleeve is in accurate friction cooperation with the outer periphery of the protruding column; the accommodating pipe is connected to the left endof the fixing sleeve; the fixing and locking unit is arranged in the accommodating pipe, and comprises a sliding ring; and a Kirschner wire channel is formed in the center of the sliding ring. The direct entering type Kirschner wire propeller disclosed by the invention is simple and convenient to use, and is high in working efficiency.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a straight-in Kirschner wire pusher for orthopedics. Background technique [0002] Kirschner wire is a commonly used internal fixation material in orthopedics. Its original size is generally fixed at about 20 cm, and there are several different sizes with a diameter of 0.5-2 mm. It is used to fix stress such as short fractures or avulsion fractures. Small fracture fixation is also often used in the fixation of temporary fracture fragments in orthopedic surgery. [0003] Clinically, when orthopedic surgeons fix the fractured part of the patient, the doctor usually drills a hole at the joint of the bone with an electric drill, and then requires the doctor to hold the Kirschner wire with one hand, and smash the Kirschner wire into the hole with the other hand using a hammer , Sometimes it may cause damage to the patient's bone due to excessive force, and sometimes the chuck...

AI Technical Summary

Problems solved by technology

[0003] Clinically, when orthopedic surgeons fix the fractured part of the patient, the doctor usually drills a hole at the joint of the bone with an electric drill, and then requires the doctor to hold the Kirschner wire with one hand, and smash the Kirschner wire into the hole with the other hand using a hammer , Sometimes it may cause damage to the patient's bone due to excessive force, and sometimes the chuck is used to hold the Kirschner wire, but the radius adjustment range of the chuck is limited and cannot adapt to a larger range of Kirschner wire models, so when using, the clip The head is not universal. It is more common to use multiple heads to meet the Kirschner wires of different specifications. It is inconvenient to use, and the clamping feel is not good, which greatly reduces the efficiency of the operation.

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