Medical composite material and disposable syringe prepared from same

A composite material and thermoplastic elastomer technology, which is applied in the field of syringes prepared from polylactic acid composite materials for medical degradable syringes, can solve problems such as insufficient performance and processing performance, and achieve pollution problems, simple processing, and reasonable formulations Effect

Inactive Publication Date: 2018-03-16
丽水市莲都区君正模具厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 100 parts of polylactic acid and 10 parts of SEBS in proportion, add silver nitrate to make the silver element content 200ppm, use a high-speed mixer to blend for 5min, add the mixed material to a twin-screw extrusion granulator to granulate, cool, cut The obtained materials were tested for their mechanical properties, antibacterial properties and degradation properties.

Embodiment 2

[0024] Weigh 100 parts of polylactic acid and 20 parts of SEBS in proportion, add silver fluoride to make the content of silver element 300ppm, use a high-speed agitator to blend for 5 minutes, add the mixed material to a twin-screw extrusion granulator to granulate, cool, Pelletize, and test the mechanical properties, antibacterial properties and degradation properties of the obtained materials.

Embodiment 3

[0026] Weigh 100 parts of polylactic acid and 30 parts of SEBS in proportion, add silver sulfate to make the silver element content 400ppm, use a high-speed mixer to blend for 5min, add the mixed material to a twin-screw extrusion granulator to granulate, cool, cut The obtained materials were tested for their mechanical properties, antibacterial properties and degradation properties.

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PUM

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Abstract

The invention relates to a blend modified polylactic acid composite material for medical degradable syringes and syringes prepared from the blend modified polylactic acid composite material, in particular to a medical degradable composite material. The medical degradable composite material comprises, by weight, 100 parts of PLA (polylactic acid) and 10-50 parts of a flexibilizer. 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 degradable composite material serving as a special material for disposable degradable syringes can be used for preparing the disposable degradable syringes and is evidently superiorto pure polylactic acid materials in antibacterial and degradation performance. The medical degradable 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L53/02C08K3/28C08K3/16C08K3/30
CPCC08L67/04C08K2003/3045C08L2201/06C08L2203/02C08L53/025C08K3/28C08K3/16C08K3/30C08K3/08
Inventor 应剑军
Owner 丽水市莲都区君正模具厂
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