A 3D printing prosthesis and its application

Abstract

The invention relates to the technical field of medical devices, and provides a 3D printing prosthesis and its application. It includes a substrate and a coating, wherein the surface of the substrate is provided with a recessed area; the coating includes a 3D printed inner coating and an outer coating, the inner coating is located in the recessed area, and the inner coating The thickness of the layer is equal to the depth of the recessed area, the outer coating is arranged on the surface of the inner coating, and the outer coating has a zigzag structure. The beneficial effect of the present invention is that: the 3D printed trabecular bone structure is different from the traditional trabecular bone structure, which is more conducive to bone ingrowth and medium- and long-term stability of the prosthesis; the 3D printed trabecular bone structure is divided into two layers, the inner The layer is a mesh bone trabecular structure, which retains the original advantages. The outer layer has a zigzag structure, which increases the contact area, improves friction, prevents the prosthesis from slipping, and improves the stability of the prosthesis in the early stage of implantation.

Description

technical field [0001] The invention relates to the technical field of medical devices, and more particularly, to a 3D printed prosthesis and a femoral stem and medulla needle prosthesis using the same. Background technique [0002] The invention of laser cladding technology has brought qualitative changes to the processing technology of the medical device industry, making many impossible possibilities and many difficulties simple. In recent years, laser cladding technology has developed rapidly, but it is blank in the medical industry. It is believed that in the near future, laser cladding technology will be applied to the medical device industry. Laser cladding technology can be cladding on substrates of different materials, and the powder materials of cladding can also be varied, which can be applied to different parts of the human body, and has strong applicability. [0003] The human trabecular bone structure is the extension of cortical bone in cancellous bone, which ...

AI Technical Summary

Problems solved by technology

The existing coatings are generally attached to the surface of the prosthesis, with a thickness of only tens of microns, which can only meet the requirements of bone growth, but cannot meet the requirements of bone ingrowth. The medium and long-term stability is not good enough, and the bonding strength is low, which is easy to Falling off, the falling off will cause infection hazards to the human body, and the prosthesis is easy to loosen, requiring a second operation

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