Medical polylactic acid composite material and disposable syringe prepared from same

Abstract

The invention relates to a medical polylactic acid composite material and a disposable syringe prepared from the same, in particular to a medical degradable composite material. The composite materialcomprises, by weight, 100 parts of PLA (polylactic acid), 10-50 parts of a flexibilizer and 0-1 part of an antioxidant. All blend components are medical nontoxic products, synthetic monomers and corresponding polymers are totally nontoxic to human bodies, automatic degradation into water and carbon dioxide within 4-6 months under a composting condition can be realized, mixed resin is free of micromolecular plasticizers, and risks of separation, entering human bodies and liquid medicine contamination of the similar composites are avoided. The medical polylactic acid composite material serving as a special material for disposable degradable syringes is evidently superior to pure polylactic acid materials in antibacterial and degradation performance and can be used for preparation of the disposable degradable syringes. The medical polylactic acid composite material is reasonable in formulation, stable in performance, free of environment pollution and available for large-batch production in purification workshops.

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