PI/PTFE coatings are two high-performance specialty coatings, among which PI (polyimide) coatings are known for their excellent high temperature resistance, high insulation strength, and mechanical strength. They are widely used in implantable medical devices (such as insulation layers for nerve stimulation electrodes) and precision diagnostic components (such as medical sensor coatings), providing reliable protection for equipment; PTFE (polytetrafluoroethylene) coating, with its extremely low friction coefficient and excellent non stick and anti-corrosion properties as its core characteristics, is widely used on the surface of various interventional surgical instruments (such as guide wires and catheters), significantly reducing tissue insertion resistance and blood adhesion, thereby improving the smoothness and safety of surgery. Both provide key surface solutions for innovation and performance optimization of modern medical devices.
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A high-performance medical guidewire is far more than just "a thin metal tube." It serves as the core skeleton and functional carrier for many advanced minimally invasive interventional medical devices (such as coronary stent delivery systems, neurointerventional instruments, and catheters). Its performance directly determines the device's pushability, trackability, flexibility, resistance to bending, and ultimately the therapeutic efficacy and safety.