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  A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agent employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toilet purposes A61K; preparation of ozone C01B13/10)  
   A61L29/00: Materials for catheters, {medical tubing, cannulae, or endoscopes}; or for coating catheters (shape or structure of catheters A61M25/00)  
   A61L29/005: Ingredients of undetermined constitution or reaction products thereof  
   A61L29/02: Inorganic materials  
   A61L29/04: Macromolecular materials  
   A61L29/041: . . obtained by reactions only involving carbon-to-carbon unsaturated bonds  
   A61L29/042: . . . Rubbers  
   A61L29/043: . . Polysaccharides  
   A61L29/044: . . Proteins; Polypeptides; Degradation products thereof  
   A61L29/045: . . . Collagen  
   A61L29/046: . . . Gelatin  
   A61L29/047: . . . Fibrin; Fibrinogen  
   A61L29/048: . . . Other specific proteins or polypeptides not covered by A61L29/045 - A61L29/047  
   A61L29/049: . . Mixtures of macromolecular compounds  
   A61L29/06: . . obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds  
   A61L29/08: Materials for coatings  
   A61L29/085: . . Macromolecular materials  
   A61L29/10: . . Inorganic materials  
   A61L29/103: . . . Carbon  
   A61L29/106: . . . Inorganic materials other than carbon  
   A61L29/12: Composite materials, i.e. containing one material dispersed in a matrix of the same or different material  
   A61L29/123: . . having an inorganic matrix  
   A61L29/126: . . having a macromolecular matrix  
   A61L29/14: Materials characterised by their function or physical properties {, e.g. lubricating compositions}  
   A61L29/141: . . Plasticizers  
   A61L29/143: . . Stabilizers  
   A61L29/145: . . Hydrogels or hydrocolloids  
   A61L29/146: . . Porous materials, e.g. foams or sponges  
   A61L29/148: . . Materials at least partially resorbable by the body  
   A61L29/16: . . Biologically active materials, e.g. therapeutic substances {A61L29/048 takes precedence}  
   A61L29/18: . . Materials at least partially X-ray or laser opaque