Molding system for preparing three-dimensional micro-porous bone bracket from high polymer

Abstract

The invention discloses a molding system for preparing a three-dimensional micro-porous bone bracket from a high polymer. A bracket (2) is arranged on a base (1). An x-y direction plane movement mechanism (7) is further arranged on the base (1). A molding support plate (6) is mounted on the x-y direction plane movement mechanism (7). A z-direction vertical hoisting mechanism (5) is arranged on the molding support plate (6). A molding platform (4) is mounted on the z-direction vertical hoisting mechanism (5). An extrusion unit (3) is mounted on the bracket (2), and a fused material is extruded in a filiform shape and solidified on the molding platform (4) by a nozzle (31) of the extrusion unit (3). A bone bracket prepared by the molding system is provided with a three-dimensional complex shape, interconnected and controlled micro-pores, suitable and adjustable mechanical properties and a surface activation character, and can be used as a substitution of a bone tissue in a human body.

Description

technical field [0001] The invention relates to a molding system of a three-dimensional microporous bone bracket, in particular to a rapid prototyping system for preparing an artificial bone bracket with interconnected micropores and complex shapes by segmentally heating and extruding a high polymer. Background technique [0002] Bone is the most important hard tissue in the human body. It plays an irreplaceable role in protecting internal organs, providing attachment for muscles, and producing blood cells. With the aging of the world's population accompanied by osteoporosis diseases, and the increasing number of bone defects caused by sports, accidents and tumor resection, orthopedic problems are highlighted. According to statistics, the total sales volume of the global artificial bone market in 2010 was 25 billion to 26 billion U.S. dollars; in my country, there are about several million cases of various orthopedic surgeries each year, among which, the annual number of pot...

AI Technical Summary

Problems solved by technology

At present, the traditional technology involves non-woven molding technology, three-dimensional weaving technology, phase separation / emulsification method, solution casting / particle dissolution method, gas foaming method, etc., because the traditional molding method mainly considers the formation of the internal porous structure, the shape of the shape Mainly rely on manual molding and mold molding, the precision of the molded bone bracket is low, the surface roughness is high, and the performance is difficult to meet the requirements

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