Acetabular cup ball socket position measuring device and acetabular cup ball socket position measuring method

Abstract

The invention discloses an acetabular cup ball socket position measuring device and an acetabular cup ball socket position measuring method. The acetabular cup ball socket position measuring device comprises a digital display device, the digital display device is provided with an auxiliary measuring mechanism, the auxiliary measuring mechanism comprises a measuring sleeve and a measuring block arranged in the measuring sleeve, the moving distance of the measuring block relative to the measuring sleeve can be displayed through the digital display device, a reference piece comprises a ball head part, the ball head part can be attached to the inner wall of the spherical surface of the ball socket, the reference piece further comprises a measuring groove, when the ball head part is attached to the inner wall of the spherical surface of the ball socket, the bottom wall of the measuring groove coincides with the center of the ball of the ball socket, an opening of the measuring groove faces the small end of the ball socket, and the measuring block can extend into the measuring groove. The position of the ball socket is accurately measured by assembling the reference piece in the acetabular cup, and the accuracy of measured data is guaranteed, so that the product quality is improved, and the operation failure risk is reduced.

Description

technical field [0001] The invention belongs to the field of medical instrument detection, and in particular relates to a device for measuring the position of an acetabular cup ball socket and a method for measuring the position of the ball socket of an acetabular cup. Background technique [0002] Artificial hip replacement is one of the best treatments for osteoarthritis and femoral head necrosis and other diseases that cause articular surface damage, pain, and deformity that lead to hip dysfunction. Artificial hip replacement has better joint mobility and can It has the advantages of realizing early going to the ground, reducing the complications of long-term bed rest for elderly patients, and the like. [0003] An artificial hip prosthesis consists of a femoral portion and an acetabular portion, which includes the acetabular cup. When the acetabular cup is implanted, the acetabular cup is fixed on the surrounding bone through the cooperation of multiple screw holes on t...

AI Technical Summary

Problems solved by technology

In the existing detection technology, after the processing of the ball socket of the acetabular cup is completed by machining, since the axis direction of the ball socket and the axis direction of the acetabular cup have a certain angle, it is impossible to use three-dimensional coordinates to measure, and most of them are measured by visual inspection tools. Therefore, there may be interference between the acetabular screw and other components, which may lead to quality risks, and may even lead to the failure of the operation and cause multiple injuries to the patient.

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