Medical care composite material and disposable injector prepared from medical care composite material

Abstract

The invention relates to a medical care composite material and a disposable injector prepared from the medical care composite material. Particularly, the medical care composite material is prepared from PLA (polylactic acid), toughening agents and antioxidants, wherein per 100 weight parts of PLA contains 10 to 50 parts of toughening agents and 0 to 1 part of antioxidants. All blending ingredientsare medical stage non-toxic products; synthetic monomers and corresponding polymers are safe and non-toxic on the human bodies; after 4 to 6 months under the compost conditions, the materials can beautomatically degraded into water and carbon dioxide; micromolecular plasticizers are not contained in blending resin; the danger of separation of compounds of the type, medicine liquid pollution andhuman body entering cannot occur. The medical care composite material is used as a special material for the disposable injector and is used for preparing the disposable degradable injector. The material has the advantages that the performance in aspects of bacterium resistance and degradation is obviously superior to that of pure polylactic acid raw materials. The formula is reasonable; the performance is stable; environment is not polluted; the mass production can be realized in a purified workshop.

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