3D printing device and method for biological implant

Abstract

The invention relates to a 3D printing device and method for a biological implant. The 3D printing device comprises a forming workbench, a powder laying device, a first laser module, a second laser module and a laser control module, wherein the laser control module controls the first laser module to output continuous laser for performing scanning molding so as to form the printing layer of the biological implant and output pulse laser to perform precise processing, and second laser module performs microstructure material reduction on the printing layer of the biological implant. The 3D printing device and method has the advantages that the high-stability optical fiber first laser device is used to emit the continuous laser and the pulse laser, the printing layer of the biological implant is formed by using the first laser device to perform scanning molding, contour precise processing is performed through the first laser device, then the optical fiber second laser device is used to perform microstructure material reduction on the printing layer, subsequent polishing of the biological implant obtained after the 3D printing is not needed, printing forming in one step is achieved, andthe 3D printing device and method is high in precision and capable of simplifying production procedures.

Description

technical field [0001] The invention relates to a laser 3D printing technology, in particular to a 3D printing device for biological implants and a printing method thereof. Background technique [0002] Selective Laser Melting (SLM) technology is currently the most precise forming method in metal 3D printing technology. SLM technology uses high-density laser spots to quickly scan two-dimensional graphics in a box with a protective atmosphere. Solidify the molten metal powder material into a thin layer of 20μm-30μm, and print out precise 3D biological implants layer by layer, which are widely used in the manufacture of implant devices, such as bone joints, vertebral bodies, orthopedics in the field of orthopedics Substitute implants, such as precision catheters in the field of implantable devices, precision minimally invasive devices, vascular stents and other internal stents (such as esophageal, biliary and tracheal stents), etc. [0003] After the existing 3D printing meth...

AI Technical Summary

Problems solved by technology

[0003] After the existing 3D printing method used in the manufacture of biological implants prints out the physical body of the biological implant, due to the problems of printing accuracy and surface quality, it is usually necessary to re-process the biological implant through traditional subtractive processing methods such as numerical control machining. Precision machining of the body and impossibility of microporous machining of the implant

Therefore, existing 3D printing methods are difficult to meet the production needs of biological implants with complex microstructures

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