Application of titanium-nickel memory alloy material in medical field

1. A new type of beta titanium alloy. In the 1990s, the United States and Japan developed a series of new beta-titanium alloys with non-toxic elements such as molybdenum, niobium, tantalum, and zirconium instead of toxic elements such as vanadium and aluminum. This type of alloy has two characteristics: one is that it contains high β-stabilizing elements; the other is that it has a lower elastic modulus (E=55~85GPa), which is closer to the elastic modulus of dense human bone (E=28GPa). The alloy series developed in the United States are: Ti-13Nb-13Zr, Ti-12Mo-6Zr-2Fe, Ti-15Mo-2.8Nb-0.2Si, Ti-15Nb, Ti-16Nb-10Hf, Ti-15Mo-3Nb. Developed in Japan are: Ti-35Nb-5Ta-7Zr and Ti-29Nb-13Ta (respectively plus 4.6Zr or 4Mo or 2Sn or 4.6Sn or 6Sn) and other alloy series.

2. Titanium-nickel alloy. Ti-Ni shape memory alloy is a new type of functional material with peculiar shape memory properties and phase transformation pseudoelasticity. Ti-Ni shape memory alloys are usually divided into three categories: one-way memory effect alloys; two-way memory effect alloys; Elastic alloy. Seamless Titanium Tube Grade 2 Because of its excellent biocompatibility, corrosion and wear resistance, high fatigue resistance, and elastic modulus similar to human bones, it is widely used in the medical field, and can be used in oral, neurosurgery, cardiovascular, thoracic surgery, ear and nose surgery. Laryngology, hepatobiliary, urology and gynecology, etc. Products include orthodontic wire, root canal file, spinal orthopedic rod, bone plate, intramedullary needle, patella claw, guide wire, guide needle, cardiac patch, vascular stent, thrombus Filters, esophagus stents, respiratory stents, biliary stents, urethral stents, rectal stents, duodenal stents, external auditory canal stents, birth control rings, etc.