Manufacturing method of artificial sclerite shaping implant with polyvinyl plastics

Abstract

The present invention relates to a method for making a vinyon artificial bone fragment molding implant, and the method comprises the steps of: (a) preparing the raw material: filtrating the thin particle vinyon in initial state, the surface of the obtained particle has a plurality of prominent bulges which is irregular ellipse grain shape; (b) preparing the mold which is composed of a mold frame, a top mold board and a lower mold plate; (c) adding material: spreading the filtrated raw material uniformly in the mold cavity after weighting; (d) orientating the electrostatic: opening the electrical power switch of the electrostatic generator and adjusting the electrical voltage, executing slow horizontal moving scanning with the electrode bar at the voltage output end at the upper side of the mold, the upright particles inclines along with the moving direction of the electrode bar and the plastic particles are arranged with regulated cross net shape; (e) closing the mold cover and inputting the mold to the heating furnace to sinter when the process of the electrostatic orientating has finished. The artificial bone fragment made with the method of the invention has a cellular structure with a definite shape, facilitates the adhering and growing of the human organization, has an excellent bioavailability and physical property.

Description

technical field [0001] The invention relates to a biomedical artificial bone chip, in particular to a method for making a biomedical artificial bone chip-shaped implant by using polyethylene plastic. Background technique [0002] At present, medical bone repair projects are mainly divided into two categories: artificial joints and bone graft materials. [0003] In recent years, foreign advanced countries such as POREX in the United States have used polyethylene plastics, such as linear low-density polyethylene (LLDPE), ultra-high molecular weight polyethylene (UHMWPE), high-density polyethylene (HDPE), etc. Implants such as artificial bone and artificial eye socket. These organic molecules composed of simple atoms of carbon and hydrogen can exhibit good physical and chemical properties through polymerization and cross-linking when the molecular weight reaches a certain level, and at the same time have good biocompatibility, safety and non-toxicity. It is said that some sci...

AI Technical Summary

Problems solved by technology

[0006] The task of the present invention is to provide a kind of manufacturing method of the improved polyethylene plastic system artificial bone chip molding implant, it solves the traditional medical titanium alloy material, ceramic material, hydroxycalcium phosphate and other inorganic materials as bone graft material. Difficult to form and process, high elastic modulus, difficult to combine with human tissue, or brittle, poor impact strength, easy to break when made into thin slices and implanted in the body, etc.