Personalized assembled sacrum, ilium and acetabulum prosthesis

Abstract

The invention relates to a personalized assembled sacrum, ilium and acetabulum prosthesis, which comprises a sacrum part prosthesis, a connection part, an acetabulum part prosthesis and machining titanium alloy self-tapping bone nails, wherein the sacrum part prosthesis, the connection part and the acetabulum part prosthesis are simultaneously designed and are subjected to 3D printing connection through an assembling way; a connection way between the sacrum part prosthesis and the connection part as well as a connection way between the connection part and the acetabulum part prosthesis is taper assembling; and the machining titanium alloy self-tapping bone nails are independently screwed into a sacrum connection prosthesis and the human body. The personalized assembled sacrum, ilium and acetabulum prosthesis is favorable for prosthesis initial stability and bone ingrowth, five bone nails, two spine nail rods and two locking screws are adopted to connect the prosthesis with the bone, and the prosthesis initial stability is reinforced through scattered distribution. A personalized customization way is adopted, lamination design is carried out according to a bone defect position, andthe prosthesis can be guaranteed to be successfully installed in the human body.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a personalized sacral-ilium-acetabular prosthesis. Background technique [0002] The sacrum is an important link in the transition from the spine to the pelvis. It plays an extremely important role in supporting the spine, maintaining the stability of the pelvis, transmitting physiological loads from the upper part of the body, and bearing external weights. Sacral tumors account for a certain proportion of spinal tumors, and surgical resection is currently the main method for the treatment of sacral tumors. After resection of the sacral tumor, in order to regain the integrity of the sacrum, various sacral prostheses are used for reconstruction in the prior art. Yet there is following defect and deficiency about the sacrum prosthesis in the prior art: [0003] First of all, when resecting sacral tumors, different patients have different tumor resection ranges, some patie...

AI Technical Summary

Problems solved by technology

[0007] 1. The sacral prosthesis in the prior art has the problem of heavy weight, which is not conducive to human activities

[0008] 2. The sacral prosthesis in the prior art has the problem of small application range, which is not conducive to solving the problem of simultaneous loss of sacrum, iliac bone and acetabulum

[0009] 3. The sacral prosthesis in the prior art has the problem that the bone nail track is too regular, which is not conducive to multi-angle suture between the prosthesis and the muscle

[0010] 4. The structure of the sacral prosthesis in the prior art is too symmetrical, which cannot solve the problems caused by unilateral pelvic resection

[0011] 5. In the prior art, the sacral prosthesis has the problem that the surface of the first iliac complex and the second iliac complex are too flat, and it needs to be inserted by tapping, which increases the difficulty of the operation

[0012] 6. The sacral prosthesis in the prior art has the problem of slow bone expansion, which is not conducive to the initial stability of the prosthesis

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