Medical polylactic acid composite material and disposal syringe prepared by same

Abstract

The invention relates to a medical polylactic acid composite material and a disposal syringe prepared by the same. The medical degradable polylactic acid composite material comprises polylactic acid (PLA), a toughening agent and a nucleating agent, wherein each 100 parts of the polylactic acid (PLA) contains 10-50 parts of toughening agent and 1-5 parts of nucleating agent. The medical polylacticacid composite material has the advantages that all the blending components of the medical polylactic acid composite material are medical nontoxic products, monomers and corresponding polymer synthesized by the components are safe and nontoxic to human bodies and can be automatically degraded into water and carbon dioxide in 4-6 months under a composting condition, the blended resin does not contain small-molecule plasticizers, and the risks that the small-molecule plasticizers separate out, pollute liquid medicine and enter the human bodies are avoided; the medical polylactic acid composite material can be used as the special material for the disposable degradable syringe and used for preparing the disposable degradable syringe; the antibacterial performance and degradability of the medical polylactic acid composite material are evidently better than those of a pure polylactic acid raw material; the medical polylactic acid composite material is reasonable in formula, stable in performance, free of environment pollution and capable of being produced in clean workshops in a large-batch manner.

Description

technical field [0001] The invention relates to a polymer material, in particular to a blended and modified polylactic acid composite material for medical degradable syringes, and the prepared syringe. Background technique [0002] The development of medical polymer material products in China started relatively late. Products such as disposable infusion sets, syringes and plastic blood bags were only developed in the 1970s. At present, materials such as polypropylene are generally used as base materials for disposable syringes. Such syringes cannot be used after being discarded. Self-degradation, pollute the environment, endanger people's health. The usual centralized incineration and destruction method not only cannot realize resource recycling, but also aggravates environmental pollution. Driven by profit, discarded syringes are illegally reused by criminals, which will cause medical risks such as cross-infection. Therefore, it is urgent to develop fully biodegradable di...

AI Technical Summary

Problems solved by technology

Polylactic acid (PLA) has excellent biocompatibility and biodegradability. Polylactic acid also has good processing performance and can be applied to traditional extrusion, injection molding, blow molding and other processing methods. The performance and processing of polylactic acid materials There are deficiencies in performance, mainly because they are brittle, and the existing polylactic acid materials have a lot of room for improvement in terms of sterilization