Intra-aortic balloon pump device

A - Human Necessities – 61 – M

Patent

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Details

A61M 1/12 (2006.01) A61L 29/00 (2006.01) A61M 1/10 (2006.01) A61M 25/00 (2006.01) A61M 25/10 (2006.01) B29C 41/14 (2006.01)

Patent

CA 2179510

A large thin walled polyurethane balloon (20) for an intra-aortic balloon pump catheter (10) is coated with a hydrophilic lubricous coating (36) which includes a water-soluble polyvinyl pyrrolidone, preferably in a blend with a thermoplastic polyurethane, and a suitable organic solvent and then is dried and cured for a substantial period. The dried and cured balloon (20) is assembled into a catheter (10) and furled. The furled balloon (20f) demonstrates a high degree of slipperiness when hydrated in conjuction with insertion into a patient's vasculature, unfurls readily, and demonstrates flexibility, strength and toughness for use in intra-aortic pulsation operation.

Un gros ballonnet (20) en polyuréthane à parois minces pour un cathéter (10) à pompe à ballonnet intra-aortique est enduit d'un revêtement (36) lubrifiant hydrophile qui comprend une polyvinylpyrrolidone hydrosoluble, de préférence mélangée à un polyuréthane thermoplastique, et un solvant organique approprié, et il est ensuite séché et amené à durcir pendant une période suffisante. Le ballonnet (20) séché et durci est assemblé dans un cathéter (10) et enroulé. Le ballonnet enroulé (20f) s'avère très glissant lorsqu'il est hydraté en vue de son insertion dans l'appareil vasculaire d'un patient, se déroule facilement et fait preuve de souplesse, de solidité et de résistance pour une utilisation en pulsations intra-aortique.

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