Intramedullary needle for treating human body clavicle fracture

Abstract

The invention relates to an intramedullary needle for treating a human body clavicle fracture. The intramedullary needle is characterized in that the intramedullary needle is composed of a needle head (1), a needle body (6) and a needle tail (4), a transition section (5) is arranged between the needle body (6) and the needle tail (4), the needle head (1) is designed to be a triangular pyramid body, the needle body (6) is designed to be a prism with the equilateral triangle cross section, a groove (2) and notches (3) are formed in one edge of the needle body (6) in the longitudinal direction, the needle tail (4) is designed to be a cylinder with the circular cross section, the transition section (5) in front of the needle tail (4) is designed to be a cone, and the intramedullary needle has the advantages of being compact in structure, easy to operate in an operation, little in stripping operation, small in damage to blood supply of the fractured part, capable of reducing pains of a patient and the like.

Description

[0001] Field [0002] The invention relates to a medical instrument and device, in particular to an intramedullary nail for treating human clavicular fractures used for internal fixation of tubular bone fractures in orthopedic operations. Background technique [0003] As we all know, clavicular fractures are common fractures. In the past, non-surgical treatment and external fixation methods were often used, resulting in malunion and nonunion. There are two methods of external fixation: steel plate and a Kirschner intramedullary nail, but the failure rate is high. The former has a large incision, which requires stripping of the periosteum and a second operation to remove the steel plate; To penetrate the cortical bone, make a hook, and bury it under the skin, the incisions are many or long, and the damage is large, and a second operation is required to take the needle; It is beneficial to the automatic compression of the broken end of the fracture. At present, in most orthope...

AI Technical Summary

Problems solved by technology

There are two methods of external fixation: steel plate and a Kirschner intramedullary nail, but the failure rate is high. The former has a large incision, which requires stripping of the periosteum and a second operation to remove the steel plate; To penetrate the cortical bone, make a hook, and bury it under the skin, the incisions are many or long, and the damage is large, and a second operation is required to take the needle; Conducive to automatic compression of fracture ends

At present, in most orthopedic operations, bone plates and bone screws are used to fix the fracture site. Generally speaking, human clavicle bone surgery is more complicated, with more periosteum peeling, more damage to the blood supply of the fracture site, fracture nonunion and internal fixation. Loosening, damage to subclavian blood vessels and brachial plexus, and local skin necrosis and steel plate exposure, etc.

There is no special intramedullary nail for the clavicle, and now the round bone needle is mostly used as the intramedullary nail for the clavicle, which has the disadvantages of stress concentration, inability to control the rotation of the fracture end, weak fixation force, and easy prolapse.

What is important is that in the past, the problems of intramedullary clavicular nailing, such as concentrated compressive stress on the fracture surface, inability to control the rotation of the fracture end, easy prolapse, and easy occurrence of side injuries, have not been well resolved. Now it has become an urgent need in human clavicular bone surgery. solved problem

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