A personalized 3D printed titanium alloy sacral prosthesis
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A 3D printing, sacral technology, applied in 3D printing, prosthesis, metal processing equipment, etc., can solve problems such as increasing prosthesis, internal fixation failure, infection, etc., to improve stability, reduce failure rate, and avoid complications. Effect
What is AI technical title?
AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A 3D printing, sacral technology, applied in 3D printing, prosthesis, metal processing equipment, etc., can solve problems such as increasing prosthesis, internal fixation failure, infection, etc., to improve stability, reduce failure rate, and avoid complications. Effect
CN110811937BActive 📅 Publication Date: 2021-12-24FOURTH MILITARY MEDICAL UNIVERSITY
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[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0036] see figure 1 , figure 2 , image 3 and Figure 8 , Figure 9 According to the surgical characteristics of total sacral resection, combined with the anatomical structure characteristics of the pelvic ring, the present invention proposes a 3D printed personalized titanium alloy prosthesis that can fix the lumbar spine and bilateral ilium.
[0037] The above-mentioned 3D printed individualized titanium alloy prosthesis includes a lumbar joint 1 in contact with the lower endplate of the lumbar vertebra 11 (specifically, the lumbar 5 vertebral body) and an iliac joint 2 in contact with the remaining ilium 10. The lumbar joint 1 There is a hollow connecting part 3 that adapts to the anatomical shape between the side of the lumbar joint and the ilium joint 2 on both sides; the middle part of the back side of the lumbar joint 1 has a bone ...
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Abstract
The invention discloses an individualized 3D printed titanium alloy sacral prosthesis, which comprises a lumbar joint, an iliac joint and a connecting part. The lumbar junction is a hollow columnar porous structure with a fan-shaped tail fin bionically designed according to the shape of the sacral 1 vertebra, and the osseointegrated surface with the lower endplate of the lumbar 5 vertebra is designed with a porous bone-like trabecular structure, and is designed with 2 screws holes; the iliac joint is a hollow polyhedron designed to imitate the auricular surface of the ilium, and the ilium joint is designed to imitate the porous structure of the trabecular bone, and is designed with four longitudinally symmetrically distributed screw holes; the joint is hollow, Porous, tubular structure that connects the lumbar junction to the iliac junction. The present invention reconstructs the pelvic ring structure through the titanium alloy sacral prosthesis, fixes it with screws and grafts the bone in the hollow structure, so as to achieve the biological healing effect of early mechanical stability and strong later stage; the reconstructed sacral defect has beautiful appearance and mechanical stability, and reduces the distance prosthetic failure rate.
Description
technical field [0001] The invention belongs to the technical field of medical internal fixation manufacturing, and in particular relates to an individualized 3D printed titanium alloy sacral prosthesis for reconstructing the stability of the pelvic ring after total sacral resection. Background technique [0002] The human sacrum consists of 5 sacral vertebrae (sacral 1-sacral 5 vertebral bodies), which are located at the end of the spine, form a strong pelvic ring structure with the bilateral ilium, connect upward to the lumbar spine, and transfer the weight of the upper body to the lower limbs on both sides. Apart from fractures, the most common lesion in the sacrum is tumor (primary tumor or metastases). Although the incidence rate is low, but because it is adjacent to pelvic organs and important vascular and nerve bundles, the lesion often compresses the sacral nerve, causing perineal and perianal numbness, incontinence, and further development can lead to paralysis of t...
Claims
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