Catheter assembly
First Claim
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1. A stent delivery system comprising:
- a stent delivery catheter having a fluid passageway;
an inflatable stent dilation balloon having a first layer of material, said balloon being sealingly affixed to said catheter and communicating with said passageway whereby said balloon is inflatable upon introduction of a pressurized fluid into said passageway;
an expandable stent surrounding said balloon and adapted for implantation into a bodily vessel upon inflation of said balloon; and
stent retention means integral with said balloon for resisting movement of said stent relative to said balloon.
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Accused Products
Abstract
A stent delivery system including a stent delivery catheter, a stent dilatation balloon sealingly affixed to the catheter and adapted for inflation by a pressurized fluid introduced into the catheter, and an expandable stent surrounding the balloon and adapted for implantation into a bodily vessel upon inflation of the balloon. The system also includes structure integral with the balloon and possibly the catheter for resisting movement of the stent relative to the balloon throughout all phases of a stent delivery and implantation operation prior to deflation and withdrawal of the balloon from the stent following implantation of the stent.
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Citations
21 Claims
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1. A stent delivery system comprising:
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a stent delivery catheter having a fluid passageway; an inflatable stent dilation balloon having a first layer of material, said balloon being sealingly affixed to said catheter and communicating with said passageway whereby said balloon is inflatable upon introduction of a pressurized fluid into said passageway; an expandable stent surrounding said balloon and adapted for implantation into a bodily vessel upon inflation of said balloon; and stent retention means integral with said balloon for resisting movement of said stent relative to said balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A stent delivery system comprising:
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a stent delivery catheter having a fluid passageway; an inflatable stent dilation balloon having a first layer, said balloon being sealingly affixed to said catheter and communicating with said passageway whereby said balloon is inflatable upon introduction of a pressurized fluid into said passageway; an expandable stent surrounding said balloon and adapted for implantation into a bodily vessel upon inflation of said balloon; and stent retention means integral with said balloon for resisting movement of said stent relative to said balloon, said stent retention means comprising a second layer of material having a high coefficient of friction provided on at least a portion of said first layer and a third layer of material provided on at least a portion of said second layer, said third layer being operable to reduce the affinity of said second layer for itself.
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12. An expandable balloon for dilating and implanting a stent in a bodily vessel, said balloon comprising:
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a first layer of material; and stent retention means integral with said balloon for resisting movement of a stent relative to said balloon when a stent is disposed about said balloon. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A stent delivery catheter for carrying an expandable balloon and a stent surrounding the balloon to a desired location within a bodily vessel, whereby expansion of the balloon dilates the stent and implants the stent in the bodily vessel, said catheter comprising:
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coaxially disposed inner and outer tubular members defining a fluid passageway therebetween; and stent retention means integral with said inner tubular member for resisting movement of a stent relative to a balloon when a balloon is carried by said catheter and a stent surrounds the balloon. - View Dependent Claims (19, 20, 21)
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Specification