1. artificial organs (including internal organs and external devices)
① internal organs: substitute blood vessels, artificial hearts, artificial heart valves, heart repair, artificial esophagus, artificial bile ducts, artificial urethra, artificial peritoneum, hernia reinforcing materials, artificial bones and joints, artificial plasma, artificial tendons, artificial skin, cosmetic materials and pacemakers.
② In vitro organs and devices: artificial heart-lung machine, artificial lung, artificial kidney, artificial liver, artificial spleen, paralytic limb stimulator, electronic artificial limb, artificial tooth, artificial eye, wig, artificial ear, artificial hand, artificial foot, etc.
2. Medical equipment
① General medical and nursing equipment, such as eye strap, intestinal lavage device, injection needle, stethoscope, rectal speculum, eye dropper, abdominal strap and connecting tube;
② Anesthesia and operating room appliances, such as aspirator, suture, pharyngoscope and vascular injection appliances;
③ examination and examination room appliances, such as blood collection tubes, blood collection bottles, electrodes for electrocardiogram, test tubes, Petri dishes, etc.
3. Drug dosage form
① Drug adjuvant: Polymer material itself is inert, does not participate in the action of drugs, and only plays the roles of thickening, surface activity, disintegration, adhesion, shaping, lubrication and packaging, or plays the role of "drug storehouse" in human body, so that drugs are released slowly and the action time of drugs is prolonged.
② polymer drugs: low-molecular drugs are made by using inert water-soluble polymers as molecular carriers, and low-molecular compounds with medicinal sealing are connected with the side groups of the carriers through valence bonds or ionic bonds.