Internal fixation device for proximal humeral fractures

Abstract

The invention relates to an internal fixation device for proximal humeral fractures. The internal fixation device comprises a rod body and a metacarpus body arranged at the end part of the rod body, wherein the rod body and the metacarpus body form an angle of 30 to 45 degrees, branches distributed at intervals are arranged at the front part of the metacarpus body, the front end of each branch is vertically or obliquely and upwardly provided with a fixing stab, relative to the surface of the metacarpus body, for puncturing into the fracture surface of a residual humeral head. The internal fixation device provided by the invention has a simple structure and is convenient to use, and the rod body can be embedded into the bone marrow cavity of the humerus firmly through fillets at periphery, and is fixed with a broken humeral head through the fixing stabs on the metacarpus body and a tail end locking bolt. Compared with the traditional external steel plate fixing manner, more fastness and reliability are achieved, and sclerotin is reserved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an internal fixator for proximal humerus fractures. Background technique [0002] The humerus is located in the upper arm, also known as the upper arm bone, and its proximal end is the hemispherical head of the humerus, which forms the shoulder joint with the glenoid of the scapula. [0003] When a displaced fracture occurs in the proximal part of the humerus, a plate is usually used to fix the fractured part of the proximal humerus to restore its anatomical structure. Since the outer plate is often eccentrically fixed, compared with the central fixation, there is a mechanical fixation. Uncertain factors, and in the case of severe fracture fragmentation, fixation is not accurate enough. For some patients who need artificial humeral head replacement due to severely comminuted fractures, the internal fixation surgery that preserves their own bone quality is more acceptable to patien...

AI Technical Summary

Problems solved by technology

[0003] When a displaced fracture occurs in the proximal part of the humerus, a plate is usually used to fix the fractured part of the proximal humerus to restore its anatomical structure. Since the outer plate is often eccentrically fixed, compared with the central fixation, there is a mechanical fixation. Inaccurate factors, and in the case of severe fracture fragmentation, fixation appears to be less precise

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