Application of Memory Alloy

Shape memory alloy is a material that eliminates its deformation at low temperatures after heating. Memory alloys are mainly used in aerospace, industry, biomedicine, and daily life. Among them, nickel titanium alloy is widely used in medical devices due to its excellent biocompatibility.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

The application of nickel titanium alloy in medical equipment. The most famous application of nickel titanium alloy in medical equipment is for self expanding stents. A stent is a tubular structure that prevents blood vessels from closing again after balloon dilation, tumor growth, or other obstructive effects. Although most stents used for coronary arteries are still balloon expanded, most stents used for non vascular or peripheral blood vessels are self expanding. The diameter of the self expanding stent is larger than the diameter of the target vessel, coiled and constrained in a catheter based delivery system. They are usually inserted into the body through small incisions or natural body openings under the guidance of fluoroscopy or endoscopy. At the target site, the stent is released from the delivery system and expands elastically until it touches the blood vessel wall. Therefore, the performance of self expanding stents depends on the material's ability to store elastic energy when limited in the delivery system, making nickel titanium alloys an ideal choice.