Fixing traction device in bone

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a fixing traction device in a bone. The device comprises an intramedullary rod, the intramedullary rodcomprises a first installation joint, a second installation joint and a rail rod, multiple sliding rail grooves are formed in the axial direction of the outer wall of the rail rod, a wire threading hole is coaxially formed in the intramedullary rod, a wire traction groove is coaxially formed in the rail rod, the first installation joint is installed on the top of the rail rod, a first fixing ringis installed on the first installation joint, a second fixing ring is installed on the second installation joint, a connecting rod is in threaded connection with the side wall of the second fixing ring, the connecting rod is of a hollow cylindrical structure, an adjusting mechanism is installed at the other end of the connecting rod, and the other end of a nylon wire penetrates through the wire threading hole and the connecting rod and is fixed on the adjusting mechanism. The device is suitable for using in the situation of a large segment detect of the bone, needle holes are less and infection does not easily occur, and the area exposed on a body surface structure is smaller, so that the influence on the daily life of a patient is smaller, and the device can better adapt to a bone cavity.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, and in particular relates to a bone internal fixation traction device. Background technique [0002] The intramedullary nail is an internal fixation device in the bone marrow cavity of the human body, and is a commonly used medical device for the treatment of fractures. The intramedullary nail is located in the bone marrow cavity and connects the fractured long tubular bone through the intramedullary nail body and the locking nail. It has the functions of aligning the fracture fragments, fixing them, and supporting a certain gravity, so as to facilitate the growth of callus and fracture healing. . Intramedullary nails are difficult to fix well in large bone defects, and do not have the ability of bone traction. It is often necessary to use bone transfer to fix each segment of bone from the outside. Osteotomy is done through trauma, slow pulling every day, and new long bone is used to ...

AI Technical Summary

Problems solved by technology

Intramedullary nails are difficult to fix well in large bone defects, and do not have the ability of bone traction. It is often necessary to use bone transfer to fix each segment of bone from the outside. Osteotomy is done through trauma, slow pulling every day, and new long bone is used to repair the original bone defect. However, there are many needle holes and infection is easy to occur. At the same time, the bone is moved and fixed on the patient's body surface, which has a great impact on the daily life of the patient, and it is easy to increase the physical and mental burden of the patient. unfavorable for rehabilitation

Traditional tractable intramedullary nails are fixed and tracted through threaded connections, but the structure of the bone cavity is often not straight, with a certain curvature, and the method of traction using screw rotation and extension is difficult to apply to irregular bone cavities

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