Titanium alloys in the medical field are mainly used in the manufacture of titanium alloys for implanting medical devices, prostheses or artificial organs and auxiliary therapeutic devices in the human body. There are mainly alloys such as titanium, titanium 5 aluminum 2.5 tin, ELI titanium 6 aluminum 4 vanadium. They have high specific strength, mechanical properties close to human bone, strength far superior to pure titanium, and also have the characteristics of fatigue resistance, corrosion resistance and excellent biocompatibility. Widely used in various artificial joints, bone fixation devices, dentures, dental implants, fixed bridges, etc. Artificial bone 6 aluminum 4 vanadiumFirst, titanium alloy core ceramic bone
It will benefit countless patients in the near future.
The domestic academician said that the "core" of ceramic bone is a titanium alloy with a very hard texture and a ceramic "coat". This layer of "coating" is sprayed at high speed with plasma at a temperature of 20,000 degrees Celsius. It is similar to the human bone, and it can also be "comfortable with the human body." The X-rays produced by the researchers showed that the injured puppies were implanted with ceramic bones. After a few months, the surrounding muscles began to connect with them, and the old and new bones gradually extended until they merged. This is mainly because the ceramic coating of ceramic bone is similar to the main inorganic components in human bone tissue.
The artificial bones currently used are mostly made of metal, lacking biological activity and compatibility, and have good biological activity and mechanical properties, which is the biggest advantage of ceramic bone. It has artificial knee joints, tibia and other varieties, the color is slightly white, and the scorpion is knocked up to make a squeaking sound. Researchers say that once the artificial bone is put on the ceramic "coat", it will be regarded as "self" by the human body, accelerate bone healing and promote tissue growth.
Second, artificial hip joint
Artificial hip joint, a type of artificial joint that mimics the structure of the human hip joint. Refers to the insertion of a metal rod from the upper end of the thigh bone. The top of the rod has a metal ball that can replace the top of the femur. A plastic plaque is glued into the hip socket and the metal ball is embedded in the raft. Thousands of patients have these joints nowadays.
1. Material: The femoral head shank is made of titanium alloy, cobalt chrome molybdenum alloy and ultra low carbon stainless steel. The plastic inner iliac and acetabulum are made of non-toxic ultra-high molecular polyethylene. The metal cup is made of titanium alloy (with titanium alloy, Cobalt-chromium-molybdenum alloy femoral head handle fits) and ultra-low carbon stainless steel.
a. monopole consists of a femoral head handle;
b. The monopolar total hip consists of a femoral head stem and a plastic acetabulum;
c. The double-headed and half-hip is composed of a femoral head, a plastic inner raft and a metal cup;
d. Double-acting total hip consists of the femoral head, plastic internal malleolus, metal cup and plastic acetabulum.
3. Processing method:
The titanium alloy product blank is processed by hot isostatic pressing. The cobalt-chromium-molybdenum alloy is processed by casting, and the stainless steel is processed by forging, which is machined and formed by surface treatment.