As a latecomer of the rubber clan, silicone rubber stands out from the crowd and is extraordinary. Being so loved by everyone is inseparable from the investment of modern high technology. The injection of high technology makes it among the best in many functions. I believe that with the further development of science and technology, the replacement of silicone rubber will also appear in our days in the near future. Most silicone rubber is based on high molecular weight linear polysiloxane, adding some specific components, and then processed according to certain technical requirements to make rubber elastomer with strength and elongation.
Silicone rubber used as medical materials has a series of good characteristics, such as high temperature resistance, oxidation resistance, hydrophobicity, softness, permeability, aging resistance, high transparency, physiological laziness, no adhesion with human body arrangement and blood, good biological adaptability, non-toxic, tasteless and non carcinogenic. Silicone rubber, as a kind of medical polymer material with excellent function and quality, has attracted the attention of professionals both in rubber industry and medicine.
The reasons are:
1、 Used as rubber medical materials, it has high technical content, low cost, high added value and considerable economic benefits;
2、 Medical properties of silicone rubber. It can not only deal with many difficult problems in medical technology, but also make patients achieve satisfactory results;
3、 Rubber comes from a wide range of sources, is convenient for production and fine processing, and has good social and economic benefits.
From the development trend of medical silicone rubber products, the quantity and dosage of finished products are increasing year by year, and the use is also expanding. Now, medical silicone rubber products are widely used in brain surgery, otorhinolaryngology, thoracic surgery, abdominal surgery, internal medicine, Urology, orthopedics and plastic surgery, such as artificial skull, artificial nose bridge, gastric tube, artificial peritoneum, artificial finger joint, artificial skin, soft tissue expander, artificial breast, etc. Polyurethane elastomer is a polar polymer composed of soft and hard segments, which is rich in many - nhcoo - groups. After selecting the appropriate structure and proportion of soft and hard segments, it can synthesize medical polymer materials with excellent physical and mechanical functions, blood compatibility and biocompatibility. The reason why polyurethane elastomer can be widely used in biomedicine is inseparable from its excellent functions. Its main functions are high-quality coagulation function; The toxicity test results meet the medical requirements; Good biocompatibility, no distortion effect and no allergic reaction in clinical use; It has excellent durability and elasticity, good processing function and various processing methods. It is the primary material for making all kinds of medical elastomer products; It has excellent wear resistance, soft touch, moisture resistance and resistance to a variety of chemicals.
At present, medical polyurethane products include artificial heart valve, artificial lung, bone adhesive, artificial skin, burn dressing, insulation wire of cardiac pacemaker, suture, various splints, catheter, transplanted blood vessel, trachea, dental data, puncture data, family planning products, etc.
