Characteristics of Medical Injection Molded Parts
Medical injection molded parts have exceptionally high-performance requirements due to their specific applications. Compared to ordinary plastic products, medical injection molded parts have the following significant characteristics:
1. Biocompatibility
Non-toxic and Harmless: They do not produce toxic side effects in the human body and avoid allergic reactions.
Non-carcinogenic: Neither the material itself nor its degradation products are carcinogenic.
Physiologically Inert: When in contact with human tissues, they do not cause inflammation or rejection.
2. High Purity
Low Impurity Content: The impurity content in the material is strictly controlled to avoid contamination of the human body.
Aseptic: Capable of withstanding high-temperature and high-pressure sterilization to ensure product sterility.
3. Chemical Resistance
Disinfectant Resistance: Can withstand the erosion of various disinfectants without chemical reactions.
Drug Resistance: Does not react chemically with various drugs and does not affect drug efficacy.
4. Excellent Physical Properties
High Strength: Possesses sufficient strength and toughness to withstand various stresses during use.
Good Wear Resistance: Surface is wear-resistant, extending service life.
Good Dimensional Stability: Dimensions remain stable under various conditions, ensuring product accuracy.
Commonly Used Materials for Medical Injection Molding
Polycarbonate (PC): High transparency, high strength, and heat resistance, commonly used for medical device housings, surgical instruments, etc.
Polypropylene (PP): Good chemical resistance, heat resistance, and non-toxicity, commonly used for disposable medical products, medical containers, etc.
Polyethylene (PE): Good flexibility and chemical resistance, commonly used for infusion bags, blood bags, etc.
Polytetrafluoroethylene (PTFE): High-temperature resistance, corrosion resistance, and non-stick properties, commonly used for catheters, artificial blood vessels, etc.
Polyurethane (PU): Good elasticity and biocompatibility, commonly used for catheters, artificial organs, etc.
Medical injection molded parts, as essential components of medical devices, directly impact the safety, efficacy, and reliability of medical devices.
