Medical silicone is a biological material used quite widely in cosmetic surgery, and there are various forms, such as: liquid silicone oil, jelly-like silicone, foam-like silicone sponge and elastic solid silicone rubber, etc. At present, the more applied is solid silicone rubber. Silicone rubber has good biocompatibility, no irritation to human tissues, no toxicity, no allergic reactions, minimal rejection of the body; has good physical and chemical properties, and body fluids and tissue contact process can maintain its original elasticity and softness, not be degraded, is a fairly stable inert material. It can withstand high temperature and can be sterilized. Processing and molding is convenient, easy to process and sculpt the shape, easy to use. What are the advantages of medical silicone?
1, solid type medical silicone rubber can replace bone or cartilage as tissue filling or scaffolding material, so it can be made into artificial joints, artificial tendons to repair the defects of limb joints and tendons. Plastic materials are mostly used as materials for repairing deformities and defects in the face, ear, nose, etc.
2, foam type medical silicone rubber can replace the human body's fat tissue, repair human facial subcutaneous tissue defects deformity, such as hemifacial atrophy.
3, film type medical silicone rubber can be used as a substitute for tendon sheath; external intestinal fistula blocking piece is also made of this type of silicone, its role is to close the intestinal fistula in the intestinal cavity, do not make the intestinal fluid leakage, keep the intestinal tract open, restore intestinal nutrition, reduce complications, simplify the treatment of intestinal fistula.
4, liquid-type medical silicone rubber, also known as silicone oil, is a low-viscosity transparent liquid, using a coarse injection needle to inject silicone oil into the craniofacial depression deformity site, easy to use, can be shaped, without hospitalization, can be treated in the outpatient clinic. In addition in the clinical use of medical silicone rubber made hydrocephalus drainage device, the treatment of hydrocephalus disease. The spherical artificial heart valve is made to replace the damaged mitral valve of the heart. As for the silicone contraceptive ring has the advantages of safety, convenience, reliability and longevity, silicone intravenous catheter, gastric tube, urinary catheter, etc. has light damage, little irritation, can be inserted in the relevant parts of the human body for a long time, and has been widely used in clinical practice. Medical silica gel adopts high-purity two-component room temperature silica gel as the basic raw material, catalyzed by platinum or peroxide to make medical silica gel, generally divided into in vivo, in vitro two types. In vivo: non-toxic, tasteless, physiologically inert, resistant to biological aging, very little reaction to human tissues, will not cause foreign body reaction after value into human tissues, no inflammation to surrounding tissues. In vitro: non-toxic, no yellowing at room temperature, no frosting, no white spitting, no fading, no scale in water for a long time, no odor, temperature resistance -60-270 degrees, weak acid and alkali resistance (different materials have different acid and alkali strength), ozone resistance, corrosion resistance, aging resistance, good tear resistance, wear resistance, high resilience, insulation voltage resistance of 35,000 volts or more.