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EP0177330B1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Percutaneous endovascular stent

Assignee: Cook Inc
•
Filing: 1985-10-01
•
Granted: 1991-06-19
•
Expires: 2005-10-01
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Abstract

Abstract An endovascular stent formed of stainless steel wire of 0.018 inches diameter and arranged in a closed zig-zag pattern. The stent is compressed into a reduced size shape of an outer diameter which is many times smaller than its expanded shape. The stent is positioned in a passageway in the vascular system by means of a sheath while the stent is retained in the compressed reduced size shape. A flat-ended catheter is used through the sheath to hold the stent in place in the passageway while the sheath is withdrawn from the passageway allowing the stent to expand in the passageway into its expanded shape to hold the passageway open and enlarged. Other possibfe applications of the stent are in the respiratory, biliary and urinary tracts to reinforce collapsing structures.

Inventors

  • 👤 Cesare Gianturco

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 19:26
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/962; A61F2/966; A61F2/82; A61F2/86; A61M; A61M29/00; A61M29/02; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 111 words
A stent (9) comprising a single length of wire formed into a closed zig-zag configuration consisting of an endless series of straight sections (12) joined by a plurality of bends (13), wherein the stent is resiliently depressible into a smaller first shape in which all of the straight sections are arranged side-by-side and closely adjacent one another for insertion into a passageway with the bends having a stress therein, and wherein the stent is resiliently expandable by release of said stress into a second shape in which all of the straight sections define a generally circular or cylindrical configuration for pressing against the wall of the passageway to maintain it open.
Claim 2
Dependent Claim 27 words
In combination, the stent of Claim 1 and a tubular cartridge (15) having said stent (9) therein, said stent being resiliently depressed into said smaller first shape.
Claim 3
Dependent Claim 65 words
The combination of Claim 2 additionally comprising a sheath (20) having a lumen therethrough, said sheath having an adapter recess arranged coaxially with said lumen and enlarged in size relative to said lumen, and flexible member (21) having a closed end and having an outer size sufficiently small to fit within said sheath yet sufficiently large to push said stent (9) out of said sheath.
Claim 4
Dependent Claim 17 words
The stent of Claim 1 wherein said wire is stainless steel of 0.046 cm (0.018 inches) O.D.
Claim 5
Dependent Claim 21 words
The stent of Claim 4 wherein said stent in its second shape is 5.5 cm long and 4 cm in diameter.
Claim 6
Dependent Claim 21 words
The stent of Claim 4 wherein said stent in its second shape is 3.0 cm long and 2.5 cm in diameter.
Claim 7
Dependent Claim 22 words
The stent of Claim 4 wherein said bends are relatively sharp and are at a radius of no more than 0.2 cm.

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