| abstract |
MEDICAL ARTICLES COMPOSED OF A SYNTHETIC HIGH POLYMER COATED WITH COLLAGEN TO BE USED IN A LIVING BODY ARE MANUFACTURED BY SUBJECTING A SURFACE OF SHAPED ARTICLES COMPOSED OF THE SYNTHETIC HIGH POLYMER OF POLYETHYLENE, POLYPROPYLENE, POLYETHYLENE TEREPHTHALATE, TEFLON OR SILICONE RESIN TO A SPARK DISCHARGE, COATING THE THUS TREATED SURFACE WITH AN ACIDIC AQUEOUS SOLUTION OF COLLAGEN AND THEN DRYING SAID SURFACE TO FORM COLLAGEN LAYER AND IRRADIATING THE SHAPED ARTICLE COATED WITH COLLAGEN WITH RADIOACTIVE RAYS, ELECTRON BEAM OR ULTRAVIOLET RAY UNDER AN ATMOSPHERE HAVING SUCH A HUMIDITY THAT THE WATER CONTENT OF THE COATED COLLAGEN BECOMES MORE THAN 20% BY WEIGHT. |