US5133732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravascular stent
Assignee: Medtronic Inc
•
Filing: 1989-03-22
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Granted: 1992-07-28
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Expires: 2009-03-22
Abstract
Abstract A stent for implantation into a body vessel in which a cylindrical stent body coiled from a generally continuous wire with a deformable zig-zag structure is provided with means for preventing the stent body from stretching along its longitudinal axis. This stent is especially useful when implanting very long stents by means of balloon expansion.
Inventors
- 👤 Dominik M. Wiktor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:04
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/88; A61F2/90; A61F2/95; A61F2/958; B; B21; B21F; B21F45/00; B21F45/008; A61F2002/825; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00035; A61F2310/00077; A61F2310/00155
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
69 words
A stent for implantation within a body vessel comprising: a cylindrical stent body formed of generally continuous wire having a deformable zig-zag wherein the wire is a coil of successive windings and whereby the stent body may be expanded from a first, unexpanded diameter to a second, expanded diameter by the force of an inflating balloon; and means for preventing the stent body from stretching along its longitudinal axis.
Claim 2
Dependent Claim
69 words
A stent for implantation within a body vessel comprising: a cylindrical stent body formed of generally continuous wire having a deformable zig-zag wherein the wire is a coil of successive windings and whereby the stent body may be expanded from a first, unexpanded diameter to a second, expanded diameter by the force of an inflating balloon; and means for preventing the stent body from stretching along its longitudinal axis.
Claim 3
Dependent Claim
10 words
The stent of claim 1 wherein the coil is helical.
Claim 4
Dependent Claim
31 words
The stent of claim 1 wherein the zig-zag is in the form of a sinusoidal wave wherein selected individual waves are hooked over waves of an adjacent winding of the coil.
Claim 5
Dependent Claim
21 words
The stent of claim 1 wherein the means for preventing the stent body from stretching comprises attachment between the successive windings.
Claim 6
Dependent Claim
29 words
The stent of claim 4 wherein the attachment between successive windings comprises a wire positioned substantially longitudinally along the stent body and attached to successive windings of the wire.
Claim 7
Dependent Claim
79 words
A stent for implantation within a body vessel comprising: a cylindrical stent body formed of generally continuous wire having a deformable zig-zag wherein the wire is a coil of successive windings and the zig-zag is in the form of a sinusoidal wave, whereby the stent body may be expanded from a first, unexpanded diameter to a second, expanded diameter by the force of an inflating balloon; and means for preventing the stent body from stretching along its longitudinal axis.
Claim 8
Dependent Claim
79 words
A stent for implantation within a body vessel comprising: a cylindrical stent body formed of generally continuous wire having a deformable zig-zag wherein the wire is a coil of successive windings and the zig-zag is in the form of a sinusoidal wave, whereby the stent body may be expanded from a first, unexpanded diameter to a second, expanded diameter by the force of an inflating balloon; and means for preventing the stent body from stretching along its longitudinal axis.
Claim 9
Dependent Claim
21 words
The stent of claim 6 wherein the means for preventing the stent body from stretching comprises attachment between the successive windings.
Claim 10
Dependent Claim
21 words
The stent of claim 7 wherein the attachment between successive windings comprises selective hooking of the sinusoidal waves of the zig-zag.
Claim 11
Dependent Claim
29 words
The stent of claim 14 wherein the attachment between successive windings comprises a wire positioned substantially longitudinally along the stent body and attached to successive windings of the wire.
Claim 12
Independent Claim
41 words
A method for making a stent body for implantation within a body vessel comprising; preforming a wire into a zig-zag pattern; winding the preformed wire on a cylindrical mandrel such that the zig-zag pattern is retained; and attaching adjacent windings together.
Claim 13
Independent Claim
41 words
A method for making a stent body for implantation within a body vessel comprising; preforming a wire into a zig-zag pattern; winding the preformed wire on a cylindrical mandrel such that the zig-zag pattern is retained; and attaching adjacent windings together.
Claim 14
Dependent Claim
24 words
The method of claim 10 wherein the step of attaching adjacent windings includes the step of hooking adjacent portions of the zig-zag pattern together.
Claim 15
Dependent Claim
42 words
The method of claim 10 wherein the step of attaching adjacent windings includes the steps of: aligning a second wire near the adjacent windings and along a longitudinal axis of the stent body; and attaching the second wire to the adjacent windings.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-28 | 1996-01-27 | 1996-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-28 | 2000-01-27 | 2000-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-28 | 2004-01-27 | 2004-07-28 | $7700.00 | Window Closed / Lapsed |