Views:276 Author:Site Editor Publish Time: 2020-06-29 Origin:Site
With the advancement and development of modern science and technology, silicone has been widely used in medicine. Silicone has good biocompatibility, no irritation to human tissues, no toxicity, no allergic reactions, and few body rejection reactions. It has good physical and chemical properties, it can maintain its original elasticity and softness during contact with body fluids and tissues, it will not be degraded, and it is a fairly stable inert substance.
Silicon, the basic ingredient in silicone materials, is the most common and easily accessible element on earth. The liquid silicone rubber is easy to be made into complex shapes. Its practicality and excellent characteristics make it very suitable for use in medical equipment.
In terms of medical use, silicone be tested for biocompatibility and meet the requirements of the US Food and Drug Administration. Medical silicone is divided into two types in terms of application: there is a time limited type and no time limited type. Usually, the time limited type is used for short-term transplantation, and the no time limited is used for long-term transplantation.
Silicone rubber is one of the synthetic rubbers. The chemical name is polymethylvinylsiloxane. It is polymerized by dimethylsiloxane monomer and other organosilicon monomers under the action of acid or alkaline catalyst. The relative molecular amount is generally between 400,000 and 500,000.
1） Solid medical silicone rubber can replace bone or cartilage as a tissue filling or scaffold material, so it can be made into artificial joints and artificial tendons to repair the defects of the limbs and tendons. Plastic materials are mostly used as materials for repairing deformed defects in the face, ears, nose, etc.
2） Foam medical silicone rubber can replace the fat tissue of the human body and repair the deformity of the subcutaneous tissue defects of the human face, such as hemifacial atrophy.
3） Membrane medical silicone rubber can be used as a substitute for the tendon sheath. The intestinal fistula internal blocking piece is also made of this type of silicone. Its function is to seal the intestinal fistula in the intestinal cavity, so as not to leak intestinal fluid, and keep the intestinal smooth, restore intestinal nutrition, reduce complications and simplify the treatment of intestinal fistula.
4) Liquid medical silicone rubber, also known as silicone oil, is a low-viscosity transparent liquid. The silicone oil is injected into the craniofacial concave deformity with a thick injection needle. It is easy to use and can be shaped easily. There is no need to be hospitalized, people can be treated in an outpatient clinic. In addition, medical silicone rubber is used to make hydrocephalus drainage device to treat hydrocephalus. The spherical artificial heart valve is made to replace the damaged heart mitral valve. As for the silicone contraceptive ring, it is more safe, convenient, reliable, and long-lasting. The silicone venous catheter, gastric tube, and urinary catheter have less damage and less irritation. It can be inserted into relevant parts of the human body for a long time, and has been widely used in clinic.
Of course, in addition to silicone applications in medical field, silicone also plays a very important role in our lives. For example, in the food industry, there are silicone cake mold and silicone kitchenware. In the maternal and infant products industry, there are silicone baby items. In short, silicone is an indispensable material in our lives.