Supporting device for treatment of femoral head necrosis

Abstract

The invention discloses a supporting device for the treatment of femoral head necrosis, and the device comprises a supporting apparatus and a bone fracture plate. The supporting apparatus comprises a head part, a body part, and a tail part. The head part is a bent hemisphere with gyrus, and the body part is cylindrical. The head part, the body part and the tail part are connected to form a body, and the interior of the body is hollow. The walls of the head part and the body part are provided with a plurality of hexagonal hollow-out through holes, and the inner walls of the tail part and the body part are provided with a mesh support. A hollow pipe of the body part extends outwards from the tail part. The bone fracture plate is matched with a femur, and is provided with a sleeve. During an operation, a necrotic bone tissue is removed at first, so as to place the supporting apparatus. The hollow pipe extends to the interior of the sleeve of the bone fracture plate, and bone putty is injected in the mesh support. A flow guide cable is buried in the hollow inner cavity of the supporting apparatus. The device improves the fixing of the bone fracture plate, enables a patient to bear a load and recover in advance, and achieves the treatment of femoral head necrosis from the pathology of blood supply improvement and the reduction of bone core pressure.

Description

technical field [0001] The invention relates to a support device used for treating femoral head necrosis in the orthopedics department of a hospital. Background technique [0002] In the existing clinical cases, the common necrosis of the femoral head is mainly caused by avascular necrosis of the femoral head (ANFH), which destroys the blood supply of the femoral head due to various etiologies, resulting in osteonecrosis of the femoral head. A pathological process, after osteonecrosis of the femoral head, the body will naturally repair the necrotic area, the necrotic bone trabeculae are gradually absorbed, the mechanical strength of the femoral head decreases, causing collapse and deformation, leading to serious damage to the hip joint, and the decline in supporting performance. Under normal conditions, the subchondral bone can be subjected to abnormal stress, causing the articular surface to collapse, and hip osteoarthritis occurs, which seriously affects the function of th...

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Problems solved by technology

[0005] The disadvantages are: the invention patent with the patent number ZL200810111686.6, the supporter has a small aperture, the trabecular bone that grows in is relatively slender, and the effect of bearing pressure is limited, and the axial center part is solid, which occupies more limited marrow Inner space; the support function is not good enough to prevent or delay the femoral head necrosis and collapse, and it has been rarely used in recent years; the patent number is ZL2010202833869. The supporter requires a small volume and is difficult to remember the alloy wire. It is made of thin memory alloy wire, and its support performance is limited. Experiments have proved that the scheme of using memory alloy wire as an inner mesh supporter is not feasible.

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