Measuring instrument for artificial hip joint pressure

Abstract

The invention relates to the technical field of medical surgical auxiliary equipment, and discloses a measuring instrument for artificial hip joint pressure. The measuring instrument includes an acetabular lining trial mold, the acetabular lining trial mold is composed of an acetabular lining shell, pressure sensors and a bluetooth signal transmitter, and the acetabular lining trial mold can be indata connection with computer equipment. The measuring instrument for the artificial hip joint pressure can improve the installation accuracy of artificial total hip replacement surgery and obtain amore ideal stress distribution, thereby improving the therapeutic effect of the artificial total hip replacement surgery; and the measuring instrument can be used for treatment of femoral neck fracture, femoral head necrosis, hip osteoarthritis, hip ankylosis, hip rheumatoid arthritis, acetabular dysplasia, hip primary / metastatic bone tumors, and other severe hip bone lesions with joint destruction.

Description

technical field [0001] The invention relates to the technical field of medical operation auxiliary equipment, in particular to an artificial hip joint pressure measuring instrument. Background technique [0002] There are many diseases that cause hip joint pain, limited mobility, and disability. Common diseases in joint surgery include: femoral neck fracture, femoral head necrosis, hip osteoarthritis, hip ankylosis, hip rheumatoid arthritis, Acetabular dysplasia, primary / metastatic bone tumor of the hip, etc. [0003] For the treatment of these diseases, total hip arthroplasty (THA) is currently used clinically. However, because hip joint lesions are often accompanied by a series of joint destruction, the acetabulum becomes shallower, smaller, or even a pseudocetabulum is formed, and it is often accompanied by atrophy of the gluteus medius muscle, distortion and deformation of the joint capsule of peripheral blood vessels and nerves. Treatment brings difficulties, so total...

AI Technical Summary

Problems solved by technology

Improper artificial joint rotation center point and too small femur offset will make the femur close to the pelvis, reduce the range of motion of the hip joint and the tension of the soft tissue around the hip joint, resulting in joint instability and hip dislocation

The imbalance of stress after THA may also cause the local load of the prosthesis to be too large, so that the prosthesis wears out earlier after use, affecting the postoperative efficacy

However, at present, there is no effective method to accurately measure and evaluate the soft tissue tension of THA and the stress of the artificial femoral head-acetabular contact surface except relying on the surgeon's hand feeling during the operation.

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