Assembled universal osseointegration semi-pelvic prosthesis

Abstract

The invention relates to an assembled type general osseointegration semi-pelvic prosthesis which comprises a general assembled type sacrum osseointegration base, an assembled type multi-angle adjustable acetabulum and pelvic ring supporting assembly, a general assembled type pubis osseointegration base, an assembled type multi-angle adjustable acetabulum and pelvic ring supporting assembly and a general assembled type multi-angle adjustable acetabulum and pelvic ring supporting assembly. The general assembly type sacrum osseointegration base, the assembly type multi-angle adjustable acetabulum and pelvic ring supporting assembly and the general assembly type pubis osseointegration base are all provided with a plurality of different models, and when the general assembly type sacrum osseointegration base, the assembly type multi-angle adjustable acetabulum and pelvic ring supporting assembly and the general assembly type pubis osseointegration base are assembled, the different models are selected, so that the assembling The overall direction and height of the pelvic ring are adjusted, and the size, the front inclination angle and the inclination angle of an acetabular cup of an acetabular cup accessory in the assembled multi-angle adjustable acetabulum and pelvic ring supporting assembly are adjusted. The semi-pelvic prosthesis has wide universality, the corresponding model of the pre-produced prosthesis assembly can be conveniently selected in preoperative design, special customization is not needed according to the condition of a patient, and the preoperative design and preparation time of a semi-pelvic replacement operation is greatly saved.

Description

technical field [0001] The invention relates to the technical field of artificial semi-pelvic prostheses, in particular to a modular universal osseointegrated semi-pelvic prosthesis. Background technique [0002] The pelvis is a common location for bone tumors. Due to the complex anatomical structure of the pelvis, reconstructing the function of the hemipelvis after pelvic tumor resection is a huge challenge for bone oncologists. At present, the classification of tumor resection and reconstruction of pelvic tumors is mainly Enneking classification, and according to anatomy, it is divided into: type I: iliac resection; type II: periacetabular resection; type III: sciatic and pubic resection; type IV: The extent of resection involves the sacrum. For Enneking I+II+III pelvic malignancies. The task of reconstructing the hemipelvic prosthesis is particularly difficult due to a series of difficulties such as the excessive resection range, the fixation method, and the difficulty ...

AI Technical Summary

Problems solved by technology

[0004] First of all, in the actual clinical application, the integrated custom-made prosthesis is often difficult to install in the environment with complex structure and narrow space in the pelvic area, and a large amount of soft tissue separation is required, which causes great collateral tissue damage and affects the patient's postoperative recovery. recover

In addition, due to the limited space in the operation area, the large prosthesis structure may not be accurately installed in the preset area, which will affect the fixation effect and lead to poor follow-up results.

Secondly, the design of fully customized prosthesis is complicated. In order to realize the individualized customization of the prosthesis, a large amount of clinical data needs to be collected, and the design cost is high, time-consuming and costly to the patient.

Thirdly, fully customized prostheses require customized production, and prostheses need to be produced individually for each patient, resulting in high costs, long working hours, and long waiting times for patients

Finally, fully customized prostheses require precise data processing before surgery to ensure a high degree of matching between the prosthesis and the patient's pelvic anatomy. In the event of damage or pathological fracture, the produced prosthesis cannot continue to be used, which may lead to further prolongation of the production cycle

At the same time, the preoperative data collection is based on imaging data, and it is difficult to achieve accurate matching with the actual intraoperative situation. In practical applications, fully customized prostheses often have room for adjustment in details

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