EP0819412A2
Expired / Lapsed
EP
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Low profile, thermally set wrapped cover for a percutaneously deployed stent
Assignee: Cordis Corp
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Filing: 1997-07-14
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Granted: —
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Expires: 2017-07-14
Abstract
Abstract An endoprosthesis assembly for percutaneous deployment on a balloon catheter is disclosed. The assembly includes a radially expandable stent overlied by a tubular, low profile stent cover wrapped over the stent. The wrapped cover is thermally set to maintain its low profile wrapped configuration during deployment of the assembly. At the treatment site, the balloon portion of the catheter is inflated causing the stent to expand radially and the stent cover to unwrap and open to conform to the expanded configuration of the stent.
Inventors
- 👤 Kenneth S. Solovay
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 00:21
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/95; A61F2/958; A61F2/82; A61F2/86; A61F2/90; A61F2002/072; A61F2002/075; A61F2002/9583
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
137 words
An endoprosthesis assembly for implantation at a treatment site within a patient's body, the assembly comprising: a) an expandable stent releasably affixed to a delivery catheter, the stent being in a first configuration during deployment of the assembly to the treatment site and being expanded to a second expanded configuration and detaching from the catheter during implantation of the assembly at the treatment site; and b) a stent cover affixed to the stent and wrapped around an outer surface of the stent when the stent is in its first configuration, the cover being releasably set to maintain its wrapped configuration during deployment of the assembly to the treatment site within the body and at least partially unwrapping during implantation to conform to the outer surface of the stent when the stent is in its second expanded configuration.
Claim 2
Dependent Claim
26 words
The endoprosthesis assembly of claim 1 wherein the stent is cylindrical and expands radially outwardly during expansion from its first configuration to its second expanded configuration.
Claim 3
Dependent Claim
38 words
The endoprosthesis assembly of claim 2 wherein the stent cover is cylindrical and has an unwrapped inner diameter at least as great as an outer diameter of the stent when the stent is in its second expanded configuration.
Claim 4
Dependent Claim
22 words
The endoprosthesis assembly of claim 3 wherein the stent cover has a length which is less than a length of the stent.
Claim 5
Dependent Claim
35 words
The endoprosthesis assembly of claim 1 wherein the stent is releasably crimped to a radially expandable balloon portion of the delivery catheter and the assembly detaches from the catheter upon inflation of the balloon portion.
Claim 6
Dependent Claim
17 words
The endoprosthesis assembly of claim 1 wherein the stent cover is comprised of a woven polyester material.
Claim 7
Dependent Claim
17 words
The endoprosthesis assembly of claim 6 wherein the stent cover is comprised of woven polyethylene terephthalate polyester.
Claim 8
Dependent Claim
27 words
The endoprosthesis assembly of claim 6 wherein the stent cover is comprised of a single layer of woven polyester material having a thickness of substantially .1 millimeters.
Claim 9
Dependent Claim
50 words
The endoprosthesis assembly of claim 2 wherein the stent is expandable to an outer diameter of substantially 5 millimeters and the assembly, when affixed to the delivery catheter, will pass through an introducer providing a passageway into the patient's body wherein the passageway has a size of substantially 2.33 millimeters.
Claim 10
Dependent Claim
50 words
The endoprosthesis assembly of claim 2 wherein the stent is expandable to an outer diameter of substantially 12 millimeters and the assembly, when affixed to the delivery catheter, will pass through an introducer providing a passageway into the patient's body wherein the passageway has a size of substantially 2.67 millimeters.
References Cited (Backward Citations)
US5019090A
Cited
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