External fixator for minimally invasive percutaneous scaphoid fixation

Abstract

The invention discloses an external fixator for minimally invasive percutaneous scaphoid fixation and relates to the field of medical instruments. The external fixator comprises a connecting frame, two limb fixing frames, two fixing frame position adjusting mechanisms, an aiming sleeve and an aiming sleeve fixing frame, wherein the two limb fixing frames are arranged in a spaced manner and in one-to-one correspondence to the two fixing frame position adjusting mechanisms; and each limb fixing frame comprises a screw rod, two slide rods, two sliders and two bone fixing calipers, wherein the screw rod and the two slide rods are parallel and arranged in a spaced manner, threads in opposite directions are arranged at two ends of the screw rod, the two sliders are in threaded fit with at two ends of the screw rod in a one-to-one correspondence manner and in sliding fit with two slide rods, the two bone fixing calipers are connected with the two sliders in a one-to-one correspondence manner,and one end of the screw rod is rotationally connected with the corresponding fixing frame position adjusting mechanism. The external fixator for the minimally invasive percutaneous scaphoid fixationhas the advantages of being convenient to operate, high in operation efficiency, high in accuracy and high in safety.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an external fixation bracket for minimally invasive percutaneous fixation of the scaphoid. Background technique [0002] Percutaneous internal fixation technology effectively avoids the disadvantages of open reduction and internal fixation such as large wound, periosteal soft tissue injury, and prone to nonunion. However, in the actual application process, due to the lack of experience of the surgeon, the inability to understand the anatomical structure of the fracture site, and the 2D intraoperative fluoroscopy cannot fully reflect the anatomical characteristics of the fracture area, resulting in prolonged operation time, unstable internal fixation, and internal fixation. Risks such as entry and exit. Contents of the invention [0003] Therefore, the present invention provides a minimally invasive external fixation bracket for percutaneous fixation of the scaphoid to solve the ...

AI Technical Summary

Problems solved by technology

[0003] For this reason, the present invention provides a minimally invasive percutaneous external fixation bracket for the scaphoid bone fixation to solve the problems of inconvenient operation, long operation time and high operation risk in the existing percutaneous internal fixation technology

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