Medical applications of titanium alloy
As a new type of alloy, medical titanium alloy is also a carrier material, which is widely used in limb implantation, alternative functional materials, dentistry, medical devices and other related fields.Titanium and titanium alloys have: good corrosion resistance, high specific strength, low elastic modulus, fatigue resistance, good biocompatibility and other characteristics.Among them, the characteristics of good biocompatibility makes it have a unique advantage compared with other metals, so it is widely favored in the medical field. However, due to its low wear resistance and low technological performance, it is committed to further improvement.
With the rapid development of national economy, the demand of medical titanium alloy in medical field is increasing with its excellent performance.As a metal material with excellent biological properties, titanium and its alloys have a good application prospect in the medical field.However, compared with developed countries, there is still a certain gap between the research and development and application of titanium alloy materials in China, such as: the high elastic modulus of titanium alloy, poor surface activity, poor wear resistance and corrosion resistance and other shortcomings, will directly affect the biocompatibility of materials.Therefore, in order to develop new titanium alloy with better comprehensive performance, China should strengthen the research and development of materials, pay attention to innovation, research and development of low elastic modulus, high wear resistance, corrosion resistance and excellent biocompatibility of biomedical titanium alloy materials.
Titanium has good affinity with human body and bone epithelial tissues, and its excellent mechanical properties also reflect its advantages in medical alloys.And the density is small, the quality is light, the corrosion resistance is good, wears with the comfort, therefore, the titanium as the denture (the implant tooth) receives the widespread favor.In addition, after the surface treatment of titanium denture, the aesthetic performance is increased, which can meet the public's demand for beauty and give people visual enjoyment.
According to relevant literature reports, about 100 million patients in the world suffer from knee and arm joint inflammation every year, so it is imperative to perform replacement surgery, so titanium alloy with excellent replacement function brings good news.Compared with ceramic, stainless steel and other materials, the elastic modulus of titanium alloy is closer to that of human skeleton, so it has more advantages in modulus size.Therefore, titanium alloy is widely used in ankle and elbow joint correction.In addition, porous titanium alloy material can make the prosthesis have biological activity, which is conducive to the femur head healing.The biocompatibility of titanium alloy is good, which can induce the growth of bone cells.
Implant prosthetics, titanium and titanium alloy as the main advantages of implant prosthetics are: (1) high strength, chemical stability and good biocompatibility;Non-toxic, will not cause harm to the human body;The elastic modulus is low, and human bones more match;Memory alloy with elastic capacity and shape recovery function.In summary, the application of titanium in skull repair is mainly reflected in: titanium mesh can be used to repair the skull defect.Applications in the cardiovascular field include the preparation of artificial heart valves, blood filters, pacemakers and artificial heart pumps.