Verfahren zur Herstellung eines aufweitbaren Ballonkatheters aus Kunststoff und nachdiesem Verfahren hergestellter Katheter

摘要

1,045,202. Balloon catheters. PHARMASEAL LABORATORIES. Feb.3, 1964 [March 25, 1963]. No. 4574/64. Heading A5R. A catheter comprises a flexible thermoplastic tube 10 having passage 13 through which fluid is passed to inflate the thermoplastic balloon 17, and a main lumen passage 11. The passage 13 is in or adjacent the wall of the tube 10 and in communication with the balloon 17 through opening 14. The catheter may be prepared by applying to the tube 10 a soluble coating or preformed film 15 (Fig. 3 not shown) which covers the opening 14 and the balloon 17 may be formed by dipping the tube 10 in the thermoplastic material. The tube 10 may be made of plasticized polyvinyl chloride, a copolymer of vinyl chloride with vinyl acetate, ethylene with isobutylene or acrylic esters (e.g. ethyl acrylate) or poly (ester-urethane). The balloon may be formed of the said polymers or of polyethylene. The coating or film is preferably water soluble and may be made of polyvinyl alcohol, methyl cellulose, starch derivatives, dextrin or polyvinyl pyrollidone. In use the fluid dissolving the coating or film also inflates the balloon 17.