Long bone cutting device

Abstract

The invention discloses a long bone cutting device which comprises two sliding rails arranged in parallel. Two arc guide rails are symmetrically arranged at the two ends of the two sliding rails. The arc guide rails are connected with the two sliding rails in a sliding mode through U-shaped forks at the two ends. Two bone clamping forceps are symmetrically arranged on the two arc guide rails. Each bone clamping forcep comprises a left forcep body and a right forcep body which are symmetrically arranged, forcep handles of the left forcep body and the right forcep body are connected through a rotating shaft hinge, the lower end of the right forcep body is connected with the arc guide rails through sliding locks in a sliding mode, an adjusting screw is connected to a hinge on the inner side of the right forcep body, and the adjusting screw penetrates through a through hole in the lower end of the left forcep body to be connected with an adjusting nut. The two bone clamping forceps can transversely move along the sliding rails and can also rotate around the arc guide rails, and two cut-off thighbones can be conveniently fixed to the proper position during surgery; due to the fact that scale marks are arranged on the sliding rails and the arc guide rails, the motion distance and the rotating angle of the bone clamping forceps can be precisely controlled.

Description

technical field [0001] The invention relates to a long bone osteotomy device, which belongs to the technical field of medical instruments. Background technique [0002] Orthopedic surgery often requires intraoperative osteotomy, especially for hip dysplasia patients with high dislocation of the hip joint. During total hip replacement, subtrochanteric osteotomy is required to shorten the length of the femur and reduce the height of the femoral head , which is easy to return to the acetabular fossa. This process requires high precision in the length of the subtrochanteric osteotomy. At the same time, in order to facilitate the installation of the femoral stem prosthesis, the two amputated femurs need to be fixed in a suitable position during the operation. In the prior art, after roughly measuring the length of the osteotomy during the operation, the assistant clamps the bone segments at the upper and lower ends of the cross-section with forceps, and then performs the osteotom...

AI Technical Summary

Problems solved by technology

Osteotomy in this way has the following disadvantages: 1. It is necessary to fully expose the soft tissue of the surgical site and increase the trauma; 2. It is not convenient to accurately measure the length of the osteotomy during osteotomy; 3. After osteotomy, the broken end The bone needs an assistant to use a lot of force to stabilize it at the position required by the surgeon. It is prone to fatigue, which leads to difficulty in resetting the bone at the stump, resulting in rotation or dislocation of the stump; 4. More instruments are needed in the operation area to help the surgeon expose the osteotomy. , Occupying the operating space of the surgeon and affecting the precise osteotomy of the surgeon, which may cause the osteotomy surface to become oblique and affect the good alignment of the osteotomy surface

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