Application of engineering plastics in the medical field

With the development of engineering plastics technology and production processes, plastic products are quietly promoting the development and changes of the medical industry. Many of the original copper-headed iron-brain devices have gradually become "sculpted heads and brains", and even scalpels have begun to have non-metallic options. Plastics are gradually showing their talents in the medical industry with its outstanding characteristics!

　Application cases of engineering plastic medical equipment components

1. Introduction to Engineering Plastics:

　　Engineering plastics refer to plastics that can be used as engineering materials and to replace metal in the manufacture of machine parts. Engineering plastics have excellent comprehensive properties, high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used for a long time in harsh chemical and physical environments and can replace metals as engineering structural materials. , But the price is more expensive and the output is small.

2. Performance characteristics:

1. Compared with general-purpose plastics, it has excellent heat and cold resistance, and has excellent mechanical properties in a wide temperature range, making it suitable for use as a structural material;

2. Good corrosion resistance, less environmental impact, and good durability;

3. Compared with metal materials, it is easy to process, has high production efficiency, and can simplify procedures and save costs;

4. It has good dimensional stability and electrical insulation;

5. Light weight, high specific strength, and outstanding anti-friction and wear resistance.

3. Special requirements for plastic raw materials for medical devices:

1. Since most monomers and their oligomeric compounds contain harmful components to the human body, there are quite strict restrictions on the corresponding residues on medical plastics;

2. It is inevitable to use materials containing metal ions such as reactors and metal catalysts in the polymerization process of plastics. According to the requirements of national medical plastics, there are clear regulations on the residues of metal ions such as lead, cadmium, copper, zinc, tin, and barium;

3. Medical plastics require high resin purity and narrow molecular weight distribution;

4. The additives in the plastic modification process need to use non-toxic additives to prevent and reduce the precipitation of the additives during long-term use, which affects the performance of the product and the therapeutic effect;

5. Internal medical plastics also have special functional requirements such as surface hydrophilicity, anticoagulant properties, and radiation sterilization resistance;

4. Requirements for plastics for medical equipment and appliances:

1. It is inevitable that medical equipment and appliances come into contact with some liquid medicines during use, because there are certain requirements for the acid and alkali resistance of plastics;

2. Most medical equipment is adjustable and rotating automation equipment, so there is a need for self-lubricating plastic;

3. The light usage rate in the working environment of the hospital is relatively high, and the weather resistance is also the rigid requirement of the equipment on the plastic;

4. Special diagnostic equipment such as X-ray equipment, B-ultrasound equipment, and ultrasound equipment require the use of anti-radiation plastic materials;

5. Stability is also very important. In my country, medical equipment resources are relatively scarce, and the monomer has a high rate of action. This requires particularly high stability to be used normally under long-term high-load conditions;

Application of engineering plastics in medical consumables

5. Application of engineering plastics in medical devices:

1. Application of general medical consumables