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EP0480667A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Percutaneous stent assembly

Assignee: Cook Inc
•
Filing: 1991-10-08
•
Granted: —
•
Expires: 2011-10-08
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Abstract

Abstract A self-expanding stent assembly (10) consisting of one or more z-stents (11,12) connected to one another and covered by a flexible sleeve (13), which can be made from either nylon, plastic or another suitable material. The stents are formed of stainless steel wire arranged in a closed zig-zag configuration which includes an endless series of struts (14) that are joined by an equal number of joints (17). The stent assembly is compressible into a reduced diameter size for insertion into, and possible removal from, a body passageway. After being properly positioned within a body passageway, the stent assembly is allowed to expand to its larger diameter shape, wherein the sleeve is pressed against the walls of the passageway by the stents. One application of the invention includes dilating a biliary duct which has been occluded by a tumorous growth. The advantage being that the sleeve prevents the tumor from growing between the gaps created by the stent which would otherwise restenose the passageway. Another intended application is to repair aneurysms. In this configuration, the stents are postioned on either side of an aneurysm, and the sleeve forms and artificial arterial wall which spans the aneurysm.

Inventors

  • 👤 Cesare Gianturco

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 16:28
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/89; A61F2002/072; A61F2002/075; A61F2/30; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30461; A61F2002/825; A61F2002/828; A61F2220/00; A61F2220/0025; A61F2220/005; A61F2220/0058; A61F2220/0075

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 111 words
A percutaneous stent assembly comprising: a flexible sleeve having an inner surface and an outer surface and being open at both ends; at least one resiliently compressible stent, each said stent including a plurality of struts defining a series of gaps between said struts; means for attaching said stents to said flexible sleeve such that said gaps defined by each said stent are substantially covered by said flexible sleeve; means for rendering said percutaneous stent assembly resistant to contraction along the axis defined by said flexible sleeve; and wherein said percutaneous stent assembly defines a smaller first shape when compressed and resiliently defines a larger second shape when allowed to expand.
Claim 2
Dependent Claim 15 words
The percutaneous stent assembly of claim 1 wherein said flexible sleeve is made of nylon.
Claim 3
Dependent Claim 24 words
The percutaneous stent assembly of claim 2 wherein said means for attaching said stents to said flexible sleeve consists of a plurality of stitches.
Claim 4
Dependent Claim 15 words
The percutaneous stent assembly of claim 1 wherein said flexible sleeve is made of plastic.
Claim 5
Dependent Claim 27 words
The percutaneous stent assembly of claim 4 wherein said means for attaching said stents to said flexible sleeve consists of embedding each said stent in said plastic.
Claim 6
Dependent Claim 149 words
A percutaneous stent assembly comprising: a flexible sleeve having an inner surface and an outer surface and being open at both ends; two resiliently compressible stents, each of said stents including a plurality of struts and defining a series of gaps between said struts; a rigid support rod positioned between said stents and having opposite ends; each of said stents being connected to a respective one of said ends of said rigid support rod; each of said stents being attached to said flexible sleeve such that said stents and said rigid support rod are substantially covered by said flexible sleeve; wherein said percutaneous stent assembly defines a smaller first shape when elastically compressed and a larger second shape when allowed to expand; and further wherein said struts and said rigid support rod render said percutaneous stent assembly resistent to contraction along the axis defined by said rigid support rod.
Claim 7
Dependent Claim 15 words
The percutaneous stent assembly of claim 6 wherein said flexible sleeve is made of nylon.
Claim 8
Dependent Claim 18 words
The percutaneous stent assembly of claim 7 wherein said means for attaching consists of a plurality of stitches.
Claim 9
Dependent Claim 15 words
The percutaneous stent assembly of claim 6 wherein said flexible sleeve is made of plastic.
Claim 10
Dependent Claim 28 words
The percutaneous stent assembly of claim 9 wherein said means for attaching said stent assembly to said flexible sleeve consists of embedding said stent assembly in said plastic.
Claim 11
Dependent Claim 41 words
The percutaneous stent assembly of claim 8 further comprising a plurality of rigid support rods positioned parrallel to one another and between each said stent; wherein each respective end of each said rigid support rod is attached to one said stent.

References Cited (Backward Citations)

FR1602513A Cited
EP0119688A2 Cited
DE3417738A1 Cited
WO1989008433A1 Cited
EP0335341B1 Cited
DE3918736A1 Cited

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