Vertically telescopic minimally invasive reduction device for tibial plateau collapse fracture blocks

Abstract

The invention belongs to the technical field of medical instruments, and discloses a vertical telescopic tibial plateau collapse fracture block minimally invasive reduction device which comprises an outer sleeve, and the outer sleeve comprises a first sleeve and a second sleeve which are connected; a rotating rod is arranged in the first sleeve, is sleeved with a driving bevel gear, and is rotationally connected with the inner wall of the first sleeve through a first bearing; a lifting rod is arranged in the second sleeve, the outer wall of the lifting rod is matched with the inner wall of the driven bevel gear through threads, an anti-rotation groove is formed in the lifting rod in the axial direction, a stop rod is arranged on the inner wall of the second sleeve, and the stop rod extends into the anti-rotation groove, so that the rotating motion of the driven bevel gear can be converted into the axial motion of the lifting rod; the lifting rod is vertically connected with the reset platform. A set of bevel gears is utilized, the rotating rod is rotated, the reduction platform gradually and vertically abuts against the collapsed bone block, an operator can easily and manually control the reduction abutting force and the reduction height, the bone block overturning risk is avoided, and the fracture reduction operation quality and efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and more particularly relates to a minimally invasive reset device for vertically telescopic tibial plateau collapsed fracture fragments. Background technique [0002] The tibial plateau collapse fracture caused by high-energy trauma and other reasons, if the collapsed bone block is not reset ideally, it will easily lead to uneven steps on the articular surface and shifting of the force line, which will cause traumatic arthritis and bring great pain to the patient. In order to reset the collapsed bone fragment of the tibial plateau, at present, the top rod is usually inserted under the collapsed bone fragment of the tibial plateau through the bone tunnel, and the top rod is hit with a hammer to reset or the top rod is lifted up to reset the collapsed bone fragment. However, the above method has the problem that the reduction height is not easy to control when resetting the subsidence area...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a minimally invasive reduction device for vertically telescopic tibial plateau collapsed fracture fragments, aiming at solving the difficulty of controlling the reduction force and height when the existing reduction device resets the tibial plateau collapsed fracture fragments, And it is difficult to lift up the collapsed fracture block vertically

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