Patent EP0778012A2 successfully refreshed from Google Patents.
EP0778012A2
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EP
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A stent delivery system
Assignee: Ethicon Inc
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Filing: 1996-12-06
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Granted: —
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Expires: 2016-12-06
Abstract
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.
Inventors
- 👤 Nicholas A. Green
- 👤 Robert W. Reinhardt
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 12:22
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/958; A61F2002/9583; A61M; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/1075
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
88 words
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.
Claim 2
Dependent Claim
34 words
The stent delivery system of claim 1 wherein said stent retention means comprise a second layer of material having a high coefficient of friction provided on at least a portion of said first layer.
Claim 3
Dependent Claim
24 words
The system of claim 2 wherein said second layer is selected from the group consisting of thermoplastic elastomers, rubber, latex, neoprene, and urethane compounds.
Claim 4
Dependent Claim
18 words
The system of claim 2 wherein said second layer is provided on substantially all of said first layer.
Claim 5
Independent Claim
41 words
The system of any of claims 2 to 4 further comprising 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.
Claim 6
Dependent Claim
13 words
The system of claim 5 wherein said third layer is an acrylonitrile copolymer.
Claim 7
Independent Claim
46 words
The system of any preceding claim wherein said catheter comprises coaxially disposed inner and outer tubular members defining said fluid passageway therebetween, and wherein said stent retention means further comprise means provided on said inner tubular member for defining a recessed seat formation for said balloon.
Claim 8
Dependent Claim
51 words
The system of claim 7 wherein said means for defining a recessed seat formation comprise a first region of said inner tubular member having a first radial dimension and second regions of said inner tubular member bounding said first region and having second radial dimensions greater than said first radial dimension.
Claim 9
Dependent Claim
45 words
The system of claim 8 wherein said second regions of said inner tubular member undergird said first second ends of said balloon such that said first and second ends of said balloon define stop means for resisting movement of said stent relative to said balloon.
Claim 10
Dependent Claim
67 words
The system of claim 1 wherein said catheter comprises coaxially disposed inner and outer tubular members defining said fluid passageway therebetween, and wherein said stent retention means comprise: a second layer of material having a high coefficient of friction provided on an at least a portion of said first layer; and means provided on said inner tubular member for defining a recessed seat formation for said balloon.
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