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US 2006/0136032 A1Published application
Balloon catheter having a balloon with hybrid porosity sublayers
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorsNora Legarda, Edwin Wang, Avegel Hernando
Life of this patent
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Abstract
formed of at least two sublayers of the porous polymeric material which have a different porosity. Additionally, in one embodiment, the sublayers of porous polymeric material have other characteristics which vary, such as tensile strength and orientation. As a result, the balloon of the invention has an improved combination of characteristics such as a low profile with a desired compliance and rupture pressure.
Claims20
A balloon catheter, comprising:
- a) an elongated shaft having an inflation lumen and a guidewire lumen;
- and
- b) a balloon on a distal shaft section with a proximal and distal end section secured to the shaft so that an interior chamber of the balloon is in fluid communication with the inflation lumen, and having a porous polymeric material layer comprising at least two adjacent sublayers of the porous polymeric material having a different porosity and extending from the proximal end section to the distal end section of the balloon.
A balloon catheter, comprising:
- a) an elongated shaft having an inflation lumen and a guidewire lumen;
- and
- b) a balloon on a distal shaft section with a proximal and distal end section secured to the shaft so that an interior chamber of the balloon is in fluid communication with the inflation lumen, and having a nonporous layer, and a porous polymeric material layer on an outer surface of the nonporous layer, the porous polymeric material layer comprising two or more inner sublayers of the porous polymeric material having a first porosity and two or more outer sublayers of the porous polymeric material having a second porosity greater than the first porosity, so that the outer sublayers are softer than the inner sublayers.
Dependencies are inferred from the claim text.