Intramedullary fixation device for clavicle fracture

Abstract

The invention provides an intramedullary fixation device for clavicle fracture, and aims at overcoming the defects of a clavicle intramedullary nail main nail and lock nail crossed locking technologyof more complications, operation complexity and the like. The intramedullary fixation device for clavicle fracture comprises an elastic inner nail and an intramedullary main nail, wherein the elasticinner nail is sequentially provided with a head part, an elastic rod part and a threaded rod part; the elastic head rod part has pre-bent titanium metal elasticity; the threaded tail rod part is provided with external screw threads; an elastic inner nail passage with the inner diameter matched with the elastic inner nail is arranged in a nail body of the intramedullary main nail; an elastic innernail passage with the inner diameter matched with the elastic inner nail is arranged in the nail body; the elastic inner nail passage comprises a straight through part and a bending part which communicate with each other; the straight through part is arranged in the axial direction of the nail body of the intramedullary main nail; internal screw threads matched with the external screw threads of the threaded rod part are arranged on the inner wall of the straight through part; one end opening of the straight through part is in the near end of the intramedullary main nail; a side opening is formed in the side wall and at the distal end of the nail body of the intramedullary main nail; and the elastic inner nail passage penetrates through the tail part of the nail body of the intramedullarymain nail and the side wall of the nail body.

Description

technical field [0001] The present invention relates to an intramedullary nail fixation device for treating fractures of long tubular bones with bending angles, such as clavicle fractures. Background technique [0002] The clavicle is an elongated bone in an inverted "S" shape, consisting of the sternal end that articulates medially with the clavicular notch of the manubrium, the acromial end that articulates laterally with the acromion of the scapula, and the clavicle body in the middle. Clavicle fractures are generally caused by falling on the shoulder or the palm of the hand, and the shear force formed by the external force conduction to the clavicle exceeds the local bone strength of the clavicle. The fracture sites are mostly concentrated at the junction of the middle 1 / 3 and outer 1 / 3 of the clavicle. The location has the smallest diameter and is only attached to the pectoralis major and subclavian muscles. It is the weakest place, so the middle 1 / 3 of the clavicle is ...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the deficiency caused by the interlocking of the main nail and the locking nail of the current clavicular intramedullary nail, and provides a clavicle fracture intramedullary nail, which has only one wound during the operation and is almost non-dangerous

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