Automatic traction device for lower-limb fracture setting operation

Abstract

The invention discloses an automatic traction device for a lower-limb fracture setting operation. According to the invention, a supporting frame is of a triangular structure, is used for supporting alower limb of a patient to form and keep a leg bending state, and comprises a horizontally-arranged supporting bottom surface, and a thigh bearing surface and a shank bearing face which are oppositelyarranged two ends of the supporting bottom surface, wherein the end parts of every two adjacent surfaces are hinged; and the lengths of all the surfaces can be adjusted and locked through edge adjusting mechanisms. A tibia kirschner wire mounting position is provided with two tibia kirschner wire mounting structures which are respectively arranged at two sides of the shank supporting surface. Twothighbone kirschner wire mounting positions are arranged in parallel at an interval, and each thighbone kirschner wire mounting position is provided with two thighbone kirschner wire mounting structures which are respectively arranged at two sides of the thigh supporting surface.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical devices, in particular to an automatic traction device for lower limb fracture osteosynthesis, which is suitable for femoral and tibial intramedullary nail implantation and percutaneous bone plate implantation osteosynthesis. Background technique [0002] Femoral and tibial fractures are common clinical fractures. Due to the strong muscle strength of the legs, patients with tibial fractures often appear shortened and deformed under the pull of the muscles. It is difficult to reset, restore its length and maintain it effectively during the operation. If the anatomical reduction cannot be performed during the operation, complications such as malunion and poor alignment of the lower limbs may occur after the operation, which may lead to traumatic arthritis or osteoarthritis, seriously affecting the limb function and quality of life of the patient. [0003] Intramedullary nailing or percuta...

AI Technical Summary

Problems solved by technology

[0006] 1. The stability of the device is low. In the case of keeping the angle of the bent legs unchanged, the overall height of the device is adjusted by the four jacking bolts at the bottom. It is difficult to adjust the four jacking bolts synchronously, and it is easy to cause the whole device to tilt ;

[0007] 2. The device as a whole is supported by only four jacking bolts and is prevented from being placed on the operating bed. Due to the certain deformability of the surface of the operating bed, the device is placed unstable. During the operation, there is shaking or the jacking bolts sink, causing the device to tilt , affect the accuracy of traction reduction, and then affect the smooth progress of the operation;

[0008] 3. The traction bow at the tibia is set at one end of the device in the length direction, which takes up space and affects the operation;

[0009] 4. All the adjustments to the traction device of the limb during the operation are manually adjusted, which increases the difficulty of operation for the operator and prolongs the operation time;

[0010] 5. In this limb traction device, due to the rotating connection between the lead screw and the bow of the traction bow, the difference between the two ends of the Kirschner wire and the calf support or thigh support cannot be adjusted, that is, the internal rotation or valgus of the broken bone cannot be corrected. Angle, it is impossible to realize the reduction of the broken bone in any direction, and there is a blind area in use

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