Thighbone auxiliary reduction device

Abstract

The invention belongs to a fracture auxiliary reduction device, in particular to a thighbone auxiliary reduction device. The thighbone auxiliary reduction device comprises a fixing assembly, a positioning assembly and a symmetrical overturning assembly, wherein the symmetrical overturning assembly comprises an overturning seat and two positioning arms arranged on the overturning seat, the two positioning arms are symmetrically expanded, and the distance between the two positioning arms can be adjusted; the overturning seat is arranged on the fixing assembly; the positioning assembly comprisesa planar linkage mechanism fixed to one of the positioning arms and an overturning side plate which is arranged on the planar linkage mechanism, is protruded from the planar linkage mechanism and is used for positioning a large rotor; the planar linkage mechanism comprises three telescopic rods which are mutually hinged; and a positioning hole b for positioning thighbone tuberositas is arranged ata hinging position of the telescopic rod. According to the thighbone auxiliary reduction device disclosed by the invention, the principle that human skeletons are in mirror symmetry is adopted, an anterior superior iliac spine is positioned through arrangement of the positioning arms which are in synchronous rotation, then the large rotor and the thighbone tuberositas are positioned on the healthside of the human body through the positioning assembly, after the positioning is completed, the large rotor and the thighbone tuberositas are overturned to the affected side of the human body, and the positioning base is used as a reference of the fracture reduction of the thighbone.

Description

technical field [0001] The invention belongs to a fracture auxiliary reduction device, in particular to a femur auxiliary reduction device. Background technique [0002] For femoral fracture surgery, accurate and rapid reduction is the difficulty and key point of the whole operation. Due to the strong muscle traction around the femur, the femur is shortened after the fracture, and the rotational displacement is obvious, and the femur is a round coronal tubular bone. There are no obvious bony markers, and it is not easy to overcome strong muscle traction to locate accurately during operation, which often causes repeated fracture reduction during operation, aggravates local soft tissue damage, and often leads to delayed union or nonunion after fracture operation. [0003] At present, the reduction device used in femoral fracture surgery helps the operator to a certain extent save the problem of intraoperative traction, greatly saves the operation time, and reduces the difficul...

AI Technical Summary

Problems solved by technology

[0002] For femoral fracture surgery, accurate and rapid reduction is the difficulty and key point of the whole operation. Due to the strong muscle traction around the femur, the femur is shortened after the fracture, and the rotational displacement is obvious, and the femur is a round coronal tubular bone. There are no obvious bony markers, and it is not easy to overcome the strong muscle traction to locate accurately during the operation, which often causes repeated fracture reduction during operation, aggravates local soft tissue damage, and often leads to delayed union or nonunion after fracture

[0003] At present, the reduction device used in femoral fracture surgery helps the operator to a certain extent save the problem of intraoperative traction, greatly saves the operation time, and reduces the difficulty of the operation. However, rotation and shortening deformities often occur after reduction. The role of reset calibration, reset often depends on the macroscopic sensation and the operator's surgical experience to make judgments, but lacks an objective reference for clearly judging the femoral rotation force line, which is too subjective, resulting in more patients with femoral rotation deformity after surgery

In actual femoral comminuted fracture cases, postoperative rotation and shortening deformities are more common, and most of the current reduction methods combine intraoperative X-ray and complex calculations or rely on subjective visual judgment for reduction, but there are large Reset errors, complex calculations are poor in operability during actual clinical operations, and subjective visual judgments often lead to postoperative rotation and shortening deformity resets

Various self-made retractors and robot resetters commonly used in the operation for intraoperative reduction of femoral fractures can easily help the operator to reset intraoperative femoral fractures, but at present, almost all external retractors and most robotic reset systems do not have The objective and accurate correction function of rotation and shortening, and the robot reset device has high requirements on the medical environment and complicated connection, so it is not suitable for popularization and use. The corrective function of shrinkage deformity to meet the standard equipment of femoral reduction is an urgent demand in the market

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