Improved balloon catheter

Details Improved balloon catheter Improved balloon catheter

A - Human Necessities

61

F

A61F 2/06 (2006.01) A61M 25/10 (2006.01) A61M 29/02 (2006.01)

Patent

CA 2247936

An expansible balloon catheter (10) has at least a first exterior surface (27) with a given coefficent of friction and a second exterior surface (32) with a greater coefficient of friction. In a compact form only the first exterior surface is exposed to produce one coefficient of friction during transfer of the collapsed or uninflated balloon to and across a lesion. When inflated, the second surface dominates the first surface and produces a second coefficient of friction.

Cette invention se rapporte à un cathéter à ballonnet expansible (10), qui comprend au moins une première surface extérieure avec un coefficient de friction donné et une seconde surface extérieure (32) avec un coefficient de friction supérieur à celui de la première surface. Lorsque le cathéter est sous sa forme compacte, seule la première surface extérieure est exposée, ce qui produit un premier coefficient de friction durant le transfert du ballonnet replié ou non gonflé jusqu'à une lésion et à travers cette lésion. Lorsque le cathéter est gonflé, la seconde surface domine la première surface et produit un second coefficient de friction.

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