Compacted catheter balloon and method of incremental compaction
First Claim
1. A balloon catheter, comprising:
- a) an elongated shaft having a proximal end, a distal end, and at least a first lumen; and
b) a balloon on a distal shaft section, having an interior in fluid communication with the first lumen, a proximal end, a distal end, a length extending from the proximal to the distal end of the balloon, and having at least a first layer with a first section, and with a second section longitudinally adjacent to the first section and extending at least in part along a central portion of the length of the balloon, the first layer second section being longitudinally compacted by more than the first layer first section, so that in a noninflated configuration prior to inflation of the balloon the second section has a lower porosity than the first section.
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Accused Products
Abstract
A catheter balloon or other expandable tubular medical device or component, having at least a first layer with a first section and a second section longitudinally compacted by more than the first section. In a presently preferred embodiment, the second section of the first layer extends at least in part along a central portion of the length of the first layer. The longitudinal compaction of the material of the first layer preferably results in a balloon or other expandable tubular medical device or component having improved performance characteristics such as compliance and dimensional stability. One aspect of the invention is directed to a method of longitudinally compacting a porous polymeric tube incrementally along the length of the tube, to compact sections of the tube.
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Citations
23 Claims
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1. A balloon catheter, comprising:
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a) an elongated shaft having a proximal end, a distal end, and at least a first lumen; and
b) a balloon on a distal shaft section, having an interior in fluid communication with the first lumen, a proximal end, a distal end, a length extending from the proximal to the distal end of the balloon, and having at least a first layer with a first section, and with a second section longitudinally adjacent to the first section and extending at least in part along a central portion of the length of the balloon, the first layer second section being longitudinally compacted by more than the first layer first section, so that in a noninflated configuration prior to inflation of the balloon the second section has a lower porosity than the first section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A balloon catheter, comprising:
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a) an elongated shaft having a proximal end, a distal end, and at least a first lumen; and
b) a balloon on a distal shaft section, having an interior in fluid communication with the first lumen, a proximal end, a distal end, and at least a first layer formed of expanded polytetrafluoroethylene, the first layer in a noninflated configuration having an inflatable central section between the proximal and distal ends of the balloon with a longitudinal compaction of about 10% to about 60%, an inflatable proximal section proximal to the central section with a longitudinal compaction less than the first layer inflatable central section and which inflates to a tapered configuration, an inflatable distal section distal to the central section with a longitudinal compaction less than the first layer inflatable central section and which inflates to a tapered configuration, a proximal skirt section secured to the shaft, and a distal skirt section secured to the shaft. - View Dependent Claims (21, 22)
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23. An expandable tubular medical device or component, comprising a tubular body having a proximal end, a distal end, a length extending from the proximal to the distal end, and having at least a first layer formed of a porous polymeric material with a first section, and with a second section longitudinally adjacent to the first section and extending at least in part along a central portion of the length of the tubular body, the second section being longitudinally compacted by more than the first section, so that in a nonexpanded configuration prior to expansion of the tubular body the second section has a lower porosity than the first section.
Specification