Adjustable acetabulum prosthesis

Abstract

The invention relates to the technical field of medical equipment, and specifically discloses an adjustable acetabulum prosthesis. The adjustable acetabulum prosthesis includes an upper layer spherical body and a pedestal, wherein the upper layer spherical body and the pedestal are connected together to form a hollow hemispheroid corresponding to the acetabulum; the outer contour of a contact surface between the upper layer spherical body and the pedestal is circular, and the upper spherical body and the pedestal can rotate relative to the axis of the upper spherical body; and the included angle between the bottom surface of the upper spherical body and the bottom surface of the pedestal is Beta, and 0 DEG < Beta < 40 DEG. The adjustable acetabulum prosthesis can adjust the installation angle of the acetabulum, can adjust the acetabulum in any direction within a certain angle during the operation so as to find the optimal acetabular angle to enable a surgeon to obtain the ideal joint matching degree, that is, the femur head-acetabulum matching degree, so as to optimize the surgical effect. After repairing the surrounding soft tissue stabilizing structure and closing the incision, an artificial hip joint prosthesis can obtain better stability, and can maximally avoid the joint dislocation and early abnormal wearing.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an adjustable acetabular prosthesis. Background technique [0002] Total hip arthroplasty is widely used clinically. However, the concept of prosthesis design and surgical technique have not been perfected, and the effect of surgery is also restricted by various common complications. One of the most common and troublesome complications is joint dislocation. [0003] The joint prosthesis used in total hip arthroplasty mainly consists of two parts, namely the acetabular cup and the artificial femoral head prosthesis contained in it. With itself as the center of rotation, the femoral head rotates and moves in all directions within the acetabulum, thereby realizing the function of the hip joint. However, the human body's natural acetabulum has limited tolerance to the femoral head, thus ensuring the range of motion of the hip joint, while the artificial joint has a lower ...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to do multiple tests in the traditional trial mode, and its real function is only limited to finding extremely serious joint mismatches for correction, but it must not be adjusted repeatedly

This situation also determines that the surgeon cannot repeatedly test the installation angle to obtain the most satisfactory joint matching degree, which indirectly leads to various complications caused by poor matching degree

[0006] To sum up, the traditional mold trial method has a large trauma to the bone around the prosthesis and cannot be repeated. It is of great significance to design a mold trial tool that can adjust the angle non-invasively.

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