Adjustable semi-pelvic prosthesis device

Abstract

The invention relates to the technical field of medical prostheses, in particular to an adjustable semi-pelvic prosthesis device. The device comprises a semi-pelvic prosthesis part matched with the pelvic defect in shape, and the semi-pelvic prosthesis part comprises an upper fixing part, a connecting part and a lower fixing part which are sequentially connected, the upper fixing part is used for fixing the uninjured side ilium or the sacrum, and the lower fixing part is used for fixing the uninjured side pubis; the device further comprises an acetabular cup prosthesis. A rotating assembly for adjusting the angle of the acetabular cup prosthesis is arranged on the connecting part; the rotating assembly is further provided with a retainer which is detachably connected with the rotating assembly. The forward inclination angle and the abduction angle of the hip rotation center of the personalized pelvic prosthesis can be finely adjusted twice in an operation. Therefore, postoperative prosthesis dislocation complications are avoided, and the exercise and living abilities of the patient after the personalized pelvic prosthesis is implanted are improved.

Description

technical field [0001] The present application relates to the technical field of medical prosthesis, in particular to an adjustable semi-pelvic prosthesis device. Background technique [0002] The pelvis is one of the more common sites of bone tumors. At present, the ideal treatment for pelvic malignant tumors is surgical resection and reconstruction. Surgical resection will cause a large bone defect in the patient's pelvis. The current solution is to implant a personalized pelvic prosthesis to achieve continuity and stability between the patient's pelvis and other bone tissues and maintain the patient's normal life. Features. The design of the implanted artificial hemipelvic prosthesis is very important for postoperative recovery. The current hemipelvic prosthesis is usually an integrated design, and the center of rotation of the hip joint cannot be adjusted. We can adjust the center of rotation of the patient according to the accuracy To evaluate the postoperative effect...

AI Technical Summary

Problems solved by technology

In the design of the existing personalized pelvic prosthesis, although the hip joint rotation center of the integrated prosthesis is designed as a mirror image with reference to the preoperative healthy side rotation center, in the actual operation process, due to the two differences between the pubic ramus and the iliac ramus There is a deviation between the fixed end and the ideal state, which often results in a significant deviation between the center of rotation of the hip joint and the healthy side after the integrated planning prosthesis is actually implanted

[0004] Due to the shortcomings of the above-mentioned prior art, and in the existing patents, the pelvic prosthesis is basically prevented from dislocation based on self-locking nail holes and helical locking structures. Pelvic prosthesis to adjust the center of hip rotation

At present, the design concept of intraoperative adjustment of the center of hip rotation is still blank in the design of pelvic prosthesis

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