Application of medical titanium alloy materials in medical fields such as artificial joints and spinal orthopedics
The world's population is nearly 6.5 billion. According to incomplete statistics, there are nearly 400 million disabled people, 60 million physically disabled people, and 2 billion dental patients. Currently, there are only 35 million biomaterial device implants, and about 1.5 million joint replacements are performed every year. Ten thousand cases, far from the actual number of replacements. Therefore, the market demand for biomedical materials has huge potential. As the first choice for biomedical metal materials——titanium rods and titanium plates, the demand will also increase greatly. Therefore, it is imperative for Medical Titanium Bar manufacturers to increase the research and development of medical titanium alloy materials.
Medical Titanium Bar is an important branch of material science. It is a new type of carrier material with high technical content and high economic value for diagnosis, treatment or replacement of human tissues, organs or enhancement of their functions. It is a developing material science and technology. of new fields. Biomedical titanium rods have made greater contributions to exploring the mysteries of human life and ensuring human health and longevity.
Among the biomedical metal materials, titanium and titanium alloys are used in artificial joints (hip, knee, shoulder, ankle, elbow, wrist, knuckles, etc.), bone trauma products (intramedullary nails, plates, screws, etc.) due to their excellent comprehensive properties. ), spinal orthopedic internal fixation systems, dental implants, dental trays, dental orthopedic wires, artificial heart valves, interventional cardiovascular stents and other medical implant products. At present, there is no better metal material than titanium alloy for clinical use. Developed countries and world-renowned implant product suppliers attach great importance to the research and development of titanium alloys, and have launched a series of new medical titanium alloy materials, including biologically active titanium alloy bionic materials, in terms of surface treatment of medical titanium alloy materials A lot of patented designs and developments have also been done to endow medical titanium alloy materials with better biological activity to meet the physiological needs of the human body, so as to achieve the purpose of early recovery of patients. For example, cheekbone plastic surgery mainly includes two concepts: one is simple chiseling of the cheekbone to reduce the outer contour of the cheekbone; the other is three-dimensional osteotomy, which shortens and moves the bone to reach the shrinking. Zygoma chipping is generally suitable for patients with anterior and lateral protruding faces. Intraoral incisions are often used to separate and expose the zygoma under the periosteum. Special instruments are used to chisel and thin the part of the zygoma designed to be removed before surgery, thereby reducing the size of the zygoma. Contours the face and improves the shape of the face. The use of titanium nails and titanium plate fixation is to prevent the cheekbones from slipping, causing facial contours to lose shape, and to better achieve the effect of cheekbone shaping! The biggest advantage of this surgery is that it does not leave scars after surgery, and it is seamless , leaving no trace. The difficulty of three-dimensional zygomatic osteotomy is greatly increased, and it is suitable for patients with zygomatic arch protrusion. In addition to the intraoral incision, an auxiliary incision is usually made at the hidden part of the hairline, or a coronal incision is made in the scalp alone. After the subperiosteal separation exposes the entire zygomatic bone, a specific size of bone is removed according to the computer three-dimensional simulation design. Then use special materials such as titanium nails to reconnect and reshape the separated bone fragments, so that the entire facial contour and shape can be changed to the greatest extent, and even the patient can achieve a "reborn" effect.
The advantages of Medical Titanium Bar as a restorative material
1. Good biocompatibility
There is a dense inert oxide film on the surface of the titanium alloy. It is this oxide film that makes the titanium alloy have good biocompatibility and can reduce the probability of infection after implantation in the human body.
2. Light weight
Titanium alloy has high strength and light weight. After implanted into the human body, it can reduce the load on the human body and also reduce the operating load on medical staff.
3. Low elastic modulus
Titanium alloy has the elastic modulus closest to the natural bone of the human body and excellent wear resistance and corrosion resistance. It can be processed and molded into a shape that matches the edge of the bone defect, and it is not easy to loosen after healing.
4. Easy to review
Titanium alloy is non-magnetic and has basically no effect on CT, MRI and other scans. The image quality is good and it is convenient for postoperative review.
Problems existing in titanium alloy as orbital repair material
Since the first successful application of titanium mesh in orbital repair in 1990, titanium mesh has been used as a filling and internal fixation material in the repair of orbital wall and orbital floor defects. However, the irregular shape and smooth surface of titanium mesh are easily wrapped by fibrous tissue, which may promote the high-density distribution and adhesion of inflammatory cells, and cause the dissolution of adjacent bone.
