Patent ID: 6719720
Filing Date: 2004-04-13
Classification: A61F,A61M

Abstract:
A balloon catheter comprising a catheter tube (10) carrying a first high pressure balloon (14) surrounding the catheter tube (10) and at least one second low pressure balloon (17; 17a, 17b) surrounding the catheter tube (10), first means (15) and second means (18) for introducing pressurized fluid into the respective first and second balloons (14; 17; 17a, 17b), first and second means (21, 22) for maintaining the respective first and second balloons (14:17; 17a, 17b) both pressurized in the expanded conditions thereof thereby forming a substantially uninterrupted exterior surface of varied rigidity and substantially uniform diameter, a tubular expandable stent (20) surrounding the first and second balloons, and said tubular expandable stent (20) having an end surrounding said at least one second low pressure balloon (17; 17a, 17b).