1. As a substitute for organs or tissues that can be left in the human body for a long time
(1) Artificial spherical mitral valve: The spherical artificial valve with metal shell and silicone rubber ball embedded inside has been widely used. The cuspidate valve made of silicone rubber can still work normally within 20 years after being implanted into the human body. This kind of substitute is especially suitable for patients with arterial outlet stenosis. In addition, silicone rubber can also be used as the encapsulation of cardiac pacemaker.

(2) As a drainage device in the treatment of hydrocephalus, "macrocephaly" is a disease caused by the obstruction of cerebrospinal fluid circulation or circulation caused by congenital, acquired or traumatic diseases, resulting in the enlargement of cerebral ventricle. The hydrocephalus drainage device is mainly used in the treatment of "big head disease", and has achieved very ideal medical results.

(3) Artificial cornea and intraocular lens: silicone rubber has air permeability and can maintain certain transparency for a long time. Therefore, when the patient's retina falls off, the silicone rubber can be placed in the eye to make the falling part return to the normal position. It is also effective to inject silicone oil that meets the corresponding requirements behind the vitreous body. At present, silicone rubber intraocular lens has been used in the treatment of various corneal diseases.

(4) Plastic surgery materials: In recent years, silicone rubber is widely used in cosmetic and facial repair. Its advantages are: no effect on skin and mucous membrane; It is not easy to age; The material hardness can be adjusted at will; Colorable; Easy to process and shape. In plastic surgery, silicone rubber can be used to repair facial defects, such as forehead, artificial nose, artificial ear, etc. In the department of stomatology, silicone rubber can be used as the soft pad of the tooth tissue surface, which is a new type of oral soft pad material. Its advantages are: it has good elasticity, prevents the teeth from loosening and falling off while making people feel comfortable, solves the patient's toothache and improves the patient's chewing function.

2. As a material retained in the human body for a short time, it has the functions of rehydration, drainage, injection, etc
(1) Medical silicone rubber tube: silicone rubber has anti viscosity, physiological inertia and anti-aging properties, so it can be stably stored in sterilization heating and biological liquids. Therefore, silicone rubber can be used as an important auxiliary material in medical rescue and treatment, including catheter, peritoneal dialysis tube and intravenous catheter.

(2) Organosilicon antifoaming agent and medicament: Organosilicon materials play an important role in the treatment of indigestion, gastric bleeding, gastric ulcer and other gastric diseases. In the process of gastroscopy, the defoaming property of silicone defoamer can eliminate foam, so that it does not interfere with the examination. Silicone defoamer can also be used in the rescue process of acute emphysema. It can quickly dredge the respiratory tract, improve the anoxic condition of patients, and reduce or avoid the suffocation and death of patients caused by foam blocking the respiratory tract. In addition, silicone defoamer can also relieve indigestion, abdominal distension of hepatitis patients, and cough symptoms.

3. It is retained in the body as a drug carrier to exert its efficacy for a long time
Due to its inertia and excellent biocompatibility, silicone materials have irreplaceable unique advantages in medical applications, and are being used in the medical field by more enterprises. From infusion pipes, artificial cochlea, artificial limbs to orthodontic dental models, wound care, etc., silicone materials are actively protecting human health in various forms.