Old calcaneal fracture prying and pulling device

Abstract

The invention discloses an old calcaneal fracture prying and pulling device, and relates to the field of medical instruments. The old calcaneal fracture prying and pulling device comprises an opening-moving mechanism and a turnover mechanism. The opening-moving mechanism comprises an operation plate a, an operation plate b, a connecting base and two prying pieces. The operation plate a and the operation plate b are arranged in parallel, the two prying pieces are fixedly connected with the operation plate a and the operation plate b respectively, the operation plate b is arranged on the connecting base in a sliding mode, the operation plate a is rotatably connected with the connecting base, a rack is fixedly arranged on the operation plate b, a gear is rotatably arranged on the operation plate a, and the gear is meshed with the rack. The turnover mechanism comprises a guide rod, an arc-shaped telescopic device and a Kirschner wire, the guide rod is slidably connected with the operationpanel a, one end of the arc-shaped telescopic device is fixedly connected with one end of the guide rod, and the other end of the arc-shaped telescopic device is connected with the Kirschner wire. Theprying and pulling device integrates a calcaneal distraction-movement function and a calcaneal turnover function, meanwhile, the prying and pulling device has wide stable support on an osteotomy plane, the calcaneal reduction effect is effectively guaranteed, and the operation is convenient.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a pryer for old calcaneal fractures. Background technique [0002] The calcaneus is located at the lower part of the back of the foot and is the largest of the seven tarsal bones, forming the heel, commonly known as the heel. In clinical medical cases, calcaneus fractures are relatively common, and their causes are diverse. Most of them are injuries from falling from heights, and they are caused by impacts after the heel hits the ground. Others are also common in traffic injuries, crush injuries, sports injuries, etc. At present, the surgical treatment methods for calcaneal fractures are mainly internal fixation with poking reduction screws and open reduction, plate and screw internal fixation. During the operation, tubular spreaders and cone-plate spreaders are usually used for auxiliary reduction. However, the above-mentioned treatment methods are mainly aimed at auxiliary reduc...

AI Technical Summary

Problems solved by technology

The spreader in the prior art can only perform translational reduction of the two dislocated bones, but cannot reverse and reset the lower calcaneus; at the same time, because of the contracture of the surrounding soft tissue, the spreader in the prior art is not stable enough and cannot In order to achieve the purpose of bone protection while carrying out expansion orthopedics, the reduction effect sometimes cannot meet the ideal requirements; in addition, the operation of the spreader in the prior art is relatively inconvenient, which affects the success rate of reduction and fixation, and greatly increases the operation time , increasing the risk of medical staff being injured by radiation

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