Bone fracture fixing and positioning needle

Abstract

The invention discloses a bone fracture fixing and positioning needle which comprises two needle bodies. A needle tip is arranged at the lower end of each needle body. A needle cap is arranged at theupper end of each needle body. A plurality of barbs are arranged at the portion, between the corresponding needle tip and the corresponding needle cap, of each needle body. Every two needle bodies areconnected with each other through an elastic device, and each elastic device comprises two shaft sleeves, two screws and a screw sleeve, wherein the two needle bodies are rotationally sleeved with the two shaft sleeves respectively, each shaft sleeve is correspondingly located above the barbs on the corresponding needle body, a spring is connected between each shaft sleeve and the corresponding screw, the two screws are screwed at the two axial ends of the screw sleeve, and the thread rotating directions of the two screws are opposite. By means of the structure, a check structure is arranged,connection is more convenient and firmer, and distance adjustment can be conducted according to actual requirements after fixed connection.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a fracture fixation positioning needle. Background technique [0002] At present, when people have short fractures or avulsion fractures, Kirschner wires are usually used for fixed positioning, that is, two Kirschner wires are inserted on both sides of the fracture, and the two Kirschner wires are connected by binding steel wires. On the one hand, because the Kirschner wires and the steel wires are very small, the binding operation is not only cumbersome but also difficult. On the other hand, the connection by the steel wires is easy to break, and the distance can no longer be adjusted as required after binding. In addition, since the existing Kirschner wire itself has no stop structure, the Kirschner wire often retreats after being inserted into the pinhole. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides ...

AI Technical Summary

Problems solved by technology

[0002] At present, when people have short fractures or avulsion fractures, Kirschner wires are usually used for fixed positioning, that is, two Kirschner wires are inserted on both sides of the fracture, and the two Kirschner wires are connected by binding steel wires. In this way, on the one hand, because the Kirschner wires and steel wires are very small, the binding operation is not only cumbersome but also difficult. On the other hand, the connection through the steel wires is prone to breakage, and at the same time, the distance can no longer be adjusted according to needs after binding.

In addition, since the existing Kirschner wire itself does not have a stop structure, the Kirschner wire often retreats after being inserted into the pinhole

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