Tungsten needles have a wide range of applications in the medical field. The following is a detailed application introduction:
1. Radiotherapy
Radiotherapy is a treatment method that uses high-energy rays to irradiate tumors to kill cancer cells or control their growth. As a material with high density, high melting point, high strength and high conductivity, tungsten needles are widely used in radiotherapy equipment.
1. As one of the core components of the treatment equipment, tungsten needles can help accelerate the generation and transmission of high-energy rays. For example, in an electron linear accelerator, tungsten needles, as targets, can absorb the energy of high-energy electrons and generate high-energy rays for treatment.
2. Tungsten needles can also be used as part of a collimator to control the shape and direction of the ray. By precisely controlling the position and angle of the tungsten needle, it can be ensured that the range of irradiation and dose distribution meet the requirements of the treatment plan.
3. In some three-dimensional conformal radiotherapy and intensity-modulated radiotherapy, tungsten needles can also be used as auxiliary components of treatment equipment to help achieve more accurate dose distribution and tumor localization.
2. Nuclear medicine
Nuclear medicine is a method of diagnosis and treatment using nuclear technology. The application of tungsten needles in the field of nuclear medicine mainly includes radioactive tracers and drug preparation.
1. Tungsten needles can be used as carrier materials to prepare radioactive tracers. For example, radioactive tungsten-188 can be used as a tracer for imaging and diagnosis. Tungsten needles can help attach radionuclides to drug molecules, improve their stability in the body, and reduce damage to normal tissues.
2. Tungsten needles can also be used to prepare certain specific drugs, such as radionuclide-labeled drugs. These drugs can be used to treat tumors and other diseases such as cancer and cardiovascular disease.
3. Surgical instruments
During surgery, tungsten needles can be used as part of surgical instruments to help perform precise surgical operations.
1. Tungsten needles can be used as part of surgical knives, which have the characteristics of high strength and high hardness, and can help perform precise cutting and digging operations.
2. Tungsten needles can also be used as part of surgical guide needles to guide doctors for precise puncture and intubation operations. Guide needles are usually made of stainless steel or titanium alloys, while tungsten needles can be used as the core component of guide needles to improve their hardness and wear resistance.
3. In some minimally invasive surgeries, tungsten needles can also be used as part of micro-surgical instruments to help doctors perform more precise and minimally invasive surgical operations.
IV. Medical device manufacturing
Tungsten needles are also widely used in medical device manufacturing.
1. Manufacture of artificial joints: Artificial joints are medical devices used to replace damaged joints of patients. Tungsten needles can be used to manufacture the surface coating of artificial joints to improve their wear resistance and service life.
2. Manufacture of prostheses: Prostheses are artificial limbs that replace missing parts of the human body. Tungsten needles can be used to manufacture the bone part of prostheses to enhance their hardness and stability.
3. Manufacture of dental instruments: Dental instruments include tools such as dental drills and dental forceps. Tungsten needles can be used to manufacture the drill bit part of dental drills to improve their hardness and wear resistance.
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