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EP0421729A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Articulated stent

Assignee: Medtronic Inc
•
Filing: 1990-10-02
•
Granted: —
•
Expires: 2010-10-02
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Abstract

Abstract In a first embodiment a number of stent segments (30) are connected together by hinges (32) welded in place to provide articulation between the stent segments. The hinges can be, among other shapes, either a straight wire or a coiled wire of biocompatable material. A second embodiment uses a stent made up of a number of wires welded together for the stent segments with connection between adjacent stents provided by having one of the wires of adjacent stents continue between these adjacent stents to provide a hinge action. In this embodiment the wire portion extending between the segments may be ground to a smaller diameter than the wire of the stent segment itself, to provide the necessary hinge flexibility. This articulated stent, made up of a number of individual stent segments, gives support for curved arteries, with the hinges between the segments providing both articulation and spacing between the stent segments. This articulated stent is tailored to match the curvature existing in the artery and is positioned at the site with the necessary preferred angular orientation using a known catheter system.

Inventors

  • 👤 Rodney G. Wolff

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 02:21
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/89; A61F2002/828

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 56 words
An articulated stent comprising: (a) at least two segments made up of stent means having an axial bore therethrough and made of metal; (b) flexible hinge means formed of biocompatible metal attached to said stent means, and arranged such as to flexibly connect said segments together with the axial bores of adjacent stent means generally aligned.
Claim 2
Dependent Claim 56 words
An articulated stent comprising: (a) at least two segments made up of stent means having an axial bore therethrough and made of metal; (b) flexible hinge means formed of biocompatible metal attached to said stent means, and arranged such as to flexibly connect said segments together with the axial bores of adjacent stent means generally aligned.
Claim 3
Dependent Claim 16 words
A stent as claimed in claim 1 wherein said hinge means are made of radiopaque material.
Claim 4
Dependent Claim 18 words
A stent as claimed in claim 1 or 2 wherein said hinge means comprse a, generally straight wire.
Claim 5
Dependent Claim 26 words
A stent as claimed in claim 1 or 2 wherein said hinge means comprise a wire coiled about a longitudinal axis extending between adjacent stent segments.
Claim 6
Dependent Claim 58 words
A stent as claimed in any preceding claim wherein each stent means comprises a number of wires welded together and formed into a generally tubular shape and wherein a wire of a pair of adjoining segments is common to both segments such that a portion of the common wire extending between adjoining stent segments provides a hinge function.
Claim 7
Dependent Claim 62 words
An articulated stent having at least two segments made up of stents of the type having a number of wires welded together and formed into a generally tubular shape, the improvement comprising having a wire of each pair of adjoining segments common to both segments such that a portion of the common wire extending between adjoining stent segments provides a hinge function.
Claim 8
Dependent Claim 62 words
An articulated stent having at least two segments made up of stents of the type having a number of wires welded together and formed into a generally tubular shape, the improvement comprising having a wire of each pair of adjoining segments common to both segments such that a portion of the common wire extending between adjoining stent segments provides a hinge function.
Claim 9
Dependent Claim 24 words
An articulated stent as in claim 5 or 6 wherein the portion(s) of the common wire(s) between adjoining stent segments have a reduced diameter.
Claim 10
Dependent Claim 26 words
An articulated stent as in claim 5, 6 or 7 wherein the portion(s) of the common wire(s) between adjoining stent segments are made of radiopaque metal.
Claim 11
Dependent Claim 28 words
An articulated stent as in claim 5, 6, 7 or 8 wherein the portion(s) of the common wire(s) between adjoining stent segments are coiled about a longitudinal axis.

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