3D printing self-locking type anatomic artificial centrum and making process

Abstract

The invention discloses a 3D printing self-locking type anatomic artificial centrum. It includes the upper centrum and the lower centrum. The upper and lower centrums are connected with a groove and abulge. The surface of the upper and lower centrums is set with honeycomb bone trabecular structure. The contact surface of the upper and lower centrums has a physiological radian associated with thespine in contact with the spine. The structure of the bone trabecula is irregular three-dimensional mesh. The artificial centrum provided by the invention is the combination of two pieces of separate3D printing products without slip phenomenon, and the combination use is more convenient. The length can be processed based on the height of the patient's pathological changes and the contact positionof the centrum, and can control the size of the angle between the centrums, reduce the incidence of settlement, enhance the stability, and restore the back of the spine. Through honeycomb micro porestructure, promoting bone fusion, providing the optimal spinal physiological mechanism stability and carrying capacity, and finally achieving bone fusion.

Description

technical field [0001] The invention relates to the technical field of artificial vertebral body structures, in particular to a 3D printed self-locking anatomical artificial vertebral body. Background technique [0002] In the original spinal vertebral resection operation, the doctor replaces the human spine by implanting an artificial vertebra whose raw material is metal or other materials, so as to restore the reconstruction of the spine and obtain the recovery of the patient's spinal function. The artificial vertebral body of the spine is mainly used for the lesions of vertebral tuberculosis and vertebral tumors. Spine Artificial Vertebral Body See figure 1 , figure 1 It is a schematic diagram of the artificial vertebral body of the spine; including the upper vertebral body and the lower vertebral body; common products are processed by forged titanium alloy materials, and the existing artificial vertebral bodies and titanium cage products are mostly machined by forged t...

AI Technical Summary

Problems solved by technology

Spine Artificial Vertebral Body See figure 1 , figure 1 It is a schematic diagram of the artificial vertebral body of the spine; including the upper vertebral body and the lower vertebral body; common products are processed by forged titanium alloy materials, and the existing artificial vertebral bodies and titanium cage products are mostly machined by forged titanium alloys, which are assembled and used by scattered parts , the surgical approach of these products is anterior surgery, which will cause changes in the structure of the internal organs of the patient, which will not allow the patient to recover better after surgery and cause great trouble; although the stability is restored after implantation into the human body, the bone and Bone cannot be fully fused, poor in strength and stiffness, prone to slippage leading to treatment failure, increased compensatory movement in adjacent segments, resulting in stress concentration at the site, accelerated degeneration of the intervertebral disc, and increased stress in the intervertebral joints, resulting in Spinal stenosis at the fused level or adjacent levels, secondary spondylolisthesis and pseudarthrosis, especially in multilevel spinal fusion fixation

[0003] The existing products are divided into product models suitable for most patients by doctors and manufacturers based on surgical experience. If the product is found to be inconsistent with the patient's lesion during use, the doctor will destroy the patient's spine according to the model of the prosthesis. , so that the patient's spinal function will decline

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