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How to make medical plastics safer and more precise?

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[Abstract]:
Comparedwithglassandmetalmaterials,themainfeaturesofplasticsare: 1.Lowcost,noneedtodisinfectandreuse,suitablefortheproductionofdisposablemedicalequipmentrawmaterials; 2.Processingissimple,usingitsplas
Compared with glass and metal materials, the main features of plastics are:
 
1. Low cost, no need to disinfect and reuse, suitable for the production of disposable medical equipment raw materials;
 
2. Processing is simple, using its plasticity can be processed into a variety of useful structures, but it is difficult to manufacture metal and glass products with complex structures.
 
3, tough and elastic, not as fragile as glass.
 
4. It has good chemical inertness and biological safety.
 
These advantages make plastics widely used in medical equipment, including polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), polycarbonate (PC), ABS, polyurethane, polyamide, thermoplastic elastomer, polysulfone and polyether ether ketone, etc. Blending can improve the properties of plastics, so that the best properties of different resins are reflected, such as polycarbonate / ABS, polypropylene / elastomer blending modification.
 
Because of its special use, medical plastic products should have different functional requirements and biological performance requirements, and most of them are made by secondary processing. These characteristics are also different from ordinary plastic products. Through the study, they have the following common characteristics: 1. Most of them are extruded, injection molded into product parts and then re-processed, assembled.
 
2, there are corresponding biological performance requirements, such as anticoagulation, super slip, antibacterial and so on.
 
3, there are different functional requirements: for example, central venous catheterization soft head protects the inner wall of blood vessels. Aortic intubation, hard head, is easy to insert during surgery.