US5653727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravascular stent
Assignee: Medtronic Inc
•
Filing: 1996-01-18
•
Granted: 1997-08-05
•
Expires: 2016-01-18
Abstract
Abstract A medical device for use in the interior of a body lumen including a catheter and a radially expandable stent mounted on the catheter. The radially expandable stent is in the form of a hollow cylinder defined by a sequence of spaced apart wire elements with each of the wire elements extending 360 degrees around the cylinder and the wire elements having extendible, sinusoidal zig-zags lying flat with respect to the cylinder. The zig-zags are shaped in a generally longitudinal direction along the cylinder at one point and then reverse their direction so that the zig-zags may open as the wire element is expanded. The adjacent wire elements are flexibly connected together in an end-to-end fashion by helical winding.
Inventors
- 👤 Dominik M. Wiktor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:52
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: 46
Claim 1
Independent Claim
132 words
A medical device for use in the interior of a body lumen comprising: (a) a catheter; (b) a radially expandable stent mounted on the catheter, the stent comprising: (1) a plurality of wire elements forming a hollow cylinder, the wire elements spaced apart along the cylinder, each of the wire elements extending 360 degrees around the cylinder, and each of the wire elements having a plurality of extendible portions provided by zig-zags in the wire elements, the zig-zags made from a low memory metal, the zig-zags lying flat with respect to the cylinder which permit the wire elements to be expanded from a first diameter covering 360 degrees of the cylinder to a second, expanded diameter covering 360 degrees of the expanded cylinder; and (2) means for connecting adjacent wire elements together.
Claim 2
Dependent Claim
132 words
A medical device for use in the interior of a body lumen comprising: (a) a catheter; (b) a radially expandable stent mounted on the catheter, the stent comprising: (1) a plurality of wire elements forming a hollow cylinder, the wire elements spaced apart along the cylinder, each of the wire elements extending 360 degrees around the cylinder, and each of the wire elements having a plurality of extendible portions provided by zig-zags in the wire elements, the zig-zags made from a low memory metal, the zig-zags lying flat with respect to the cylinder which permit the wire elements to be expanded from a first diameter covering 360 degrees of the cylinder to a second, expanded diameter covering 360 degrees of the expanded cylinder; and (2) means for connecting adjacent wire elements together.
Claim 3
Dependent Claim
15 words
A medical device according to claim 1 wherein the zig-zags are generally sinusoidal in shape.
Claim 4
Dependent Claim
18 words
A medical device according to claim 1 wherein the second diameter is about three times the first diameter.
Claim 5
Dependent Claim
17 words
A medical device according to claim 1 wherein the wire elements are evenly spaced around the cylinder.
Claim 6
Dependent Claim
16 words
A medical device according to claim 1 wherein the zig-zags are evenly spaced around the cylinder.
Claim 7
Dependent Claim
24 words
A medical device according to claim 1 wherein the mean for connecting adjacent wire elements together includes means for providing flexibility to the stent.
Claim 8
Dependent Claim
25 words
A medical device according to claim 6 wherein the means for connecting adjacent wire elements together is an end-to-end helical winding of the wire elements.
Claim 9
Dependent Claim
18 words
A medical device according to claim 1 also comprising means on the catheter for radially expanding the stent.
Claim 10
Dependent Claim
21 words
A medical device according to claim 8 wherein the means on the catheter for radially expanding the stent is a balloon.
Claim 11
Dependent Claim
21 words
A medical device according to claim 9 wherein the stent has an end formed in a loop to prevent balloon puncture.
Claim 12
Dependent Claim
126 words
A medical device for use in the interior of a body lumen comprising: (a) a catheter: (b) a radially expandable stent mounted on the catheter, the stent comprising: (1) a plurality of elements forming a hollow cylinder, the elements arranged sequentially along the cylinder, each of the elements extending around the cylinder, and each of the elements having zig-zags therein, the zig-zags made from a low memory metal, the zig-zags being generally sinusoidal in shape with the zig-zags taking a generally longitudinal direction along the cylinder and then reversing their direction and lying flat with respect to the cylinder such that the zig-zags open as the stent is expanded from a first diameter to a second, expanded diameter; and (2) means for connecting adjacent elements together.
Claim 13
Dependent Claim
126 words
A medical device for use in the interior of a body lumen comprising: (a) a catheter: (b) a radially expandable stent mounted on the catheter, the stent comprising: (1) a plurality of elements forming a hollow cylinder, the elements arranged sequentially along the cylinder, each of the elements extending around the cylinder, and each of the elements having zig-zags therein, the zig-zags made from a low memory metal, the zig-zags being generally sinusoidal in shape with the zig-zags taking a generally longitudinal direction along the cylinder and then reversing their direction and lying flat with respect to the cylinder such that the zig-zags open as the stent is expanded from a first diameter to a second, expanded diameter; and (2) means for connecting adjacent elements together.
Claim 14
Dependent Claim
16 words
A medical device according to claim 11 wherein the elements extend 360 degrees around the cylinder.
Claim 15
Dependent Claim
13 words
A medical device according to claim 11 wherein the elements are wire elements.
Claim 16
Dependent Claim
18 words
A medical device according to claim 11 wherein the second diameter is about three times the first diameter.
Claim 17
Dependent Claim
16 words
A medical device according to claim 11 wherein the elements are evenly spaced along the cylinder.
Claim 18
Dependent Claim
16 words
A medical device according to claim 11 wherein the zig-zags are evenly spaced around the cylinder.
Claim 19
Dependent Claim
23 words
A medical device according to claim 11 wherein the means for connecting adjacent elements together includes means for providing flexibility to the stent.
Claim 20
Dependent Claim
23 words
A medical device according to claim 17 wherein the means for connecting adjacent elements together is an end-to-end helical winding of the elements.
Claim 21
Dependent Claim
18 words
A medical device according to claim 11 also comprising means on the catheter for radially expanding the stent.
Claim 22
Dependent Claim
21 words
A medical device according to claim 19 wherein the means on the catheter for radially expanding the stent is a balloon.
Claim 23
Dependent Claim
21 words
A medical device according to claim 20 wherein the stent has an end formed in a loop to prevent balloon puncture.
Claim 24
Dependent Claim
128 words
A medical device for use in the interior of a body lumen comprising: (a) a catheter: (b) a radially expandable stent mounted on the catheter, the stent comprising: (1) a plurality of elements forming o hollow cylinder, the elements spaced apart along the length of the cylinder, each of the elements extending 360 degrees around the cylinder, and each of the elements having a plurality of extendible portions made from a low memory material lying flat with respect to the cylinder which permit the elements to deform and be expanded from a first diameter covering 360 degrees of the cylinder to a second, expanded diameter covering 360 degrees of the expanded cylinder; and (2) means for connecting adjacent elements together including means for providing flexibility to the stent.
Claim 25
Dependent Claim
128 words
A medical device for use in the interior of a body lumen comprising: (a) a catheter: (b) a radially expandable stent mounted on the catheter, the stent comprising: (1) a plurality of elements forming o hollow cylinder, the elements spaced apart along the length of the cylinder, each of the elements extending 360 degrees around the cylinder, and each of the elements having a plurality of extendible portions made from a low memory material lying flat with respect to the cylinder which permit the elements to deform and be expanded from a first diameter covering 360 degrees of the cylinder to a second, expanded diameter covering 360 degrees of the expanded cylinder; and (2) means for connecting adjacent elements together including means for providing flexibility to the stent.
Claim 26
Dependent Claim
20 words
A medical device according to claim 22 wherein the plurality of extendible portions are provided by zig-zags in the element.
Claim 27
Dependent Claim
15 words
A medical device according to claim 23 wherein the zig-zags are generally sinusoidal in shape.
Claim 28
Dependent Claim
13 words
A medical device according to claim 23 wherein the elements are wire elements.
Claim 29
Dependent Claim
18 words
A medical device according to claim 22 wherein the second diameter is about three times the first diameter.
Claim 30
Dependent Claim
16 words
A medical device according to claim 22 wherein the elements are evenly spaced along the cylinder.
Claim 31
Dependent Claim
16 words
A medical device according to claim 22 wherein the zig-zags are evenly spaced around the cylinder.
Claim 32
Dependent Claim
23 words
A medical device according to claim 22 wherein the means for connecting adjacent elements together is an end-to-end helical winding of the elements.
Claim 33
Dependent Claim
18 words
A medical device according to claim 22 also comprising means on the catheter for radially expanding the stent.
Claim 34
Dependent Claim
21 words
A medical device according to claim 30 wherein the means on the catheter for radially expanding the stent is a balloon.
Claim 35
Dependent Claim
21 words
A medical device according to claim 31 wherein the stent has an end formed in a loop to prevent balloon puncture.
Claim 36
Dependent Claim
114 words
A medical device for use in the interior of a body lumen comprising: (a) a catheter: (b) a radially expandable stent mounted on the catheter, the stent comprising: (1) a plurality of elements forming a hollow cylinder, the elements spaced apart along the length of the cylinder, each of the elements extending 360 degrees around the cylinder, and each of the elements having a plurality of extendible portions lying flat with respect to the cylinder which permit the elements to be expanded from a first diameter covering 360 degrees of the cylinder to a second, expanded diameter covering 360 degrees of the expanded cylinder; and (2) means for flexible, helical connection of adjacent elements.
Claim 37
Dependent Claim
114 words
A medical device for use in the interior of a body lumen comprising: (a) a catheter: (b) a radially expandable stent mounted on the catheter, the stent comprising: (1) a plurality of elements forming a hollow cylinder, the elements spaced apart along the length of the cylinder, each of the elements extending 360 degrees around the cylinder, and each of the elements having a plurality of extendible portions lying flat with respect to the cylinder which permit the elements to be expanded from a first diameter covering 360 degrees of the cylinder to a second, expanded diameter covering 360 degrees of the expanded cylinder; and (2) means for flexible, helical connection of adjacent elements.
Claim 38
Dependent Claim
20 words
A medical device according to claim 33 wherein the plurality of extendible portions are provided by zig-zags in the element.
Claim 39
Dependent Claim
15 words
A medical device according to claim 34 wherein the zig-zags are generally sinusoidal in shape.
Claim 40
Dependent Claim
13 words
A medical device according to claim 33 wherein the elements are wire elements.
Claim 41
Dependent Claim
18 words
A medical device according to claim 33 wherein the second diameter is about three times the first diameter.
Claim 42
Dependent Claim
16 words
A medical device according to claim 33 wherein the elements are evenly spaced along the cylinder.
Claim 43
Dependent Claim
16 words
A medical device according to claim 34 wherein the zig-zags are evenly spaced around the cylinder.
Claim 44
Dependent Claim
18 words
A medical device according to claim 33 also comprising means on the catheter for radially expanding the stent.
Claim 45
Dependent Claim
21 words
A medical device according to claim 40 wherein the means on the catheter for radially expanding the stent is a balloon.
Claim 46
Dependent Claim
21 words
A medical device according to claim 41 wherein the stent has an end formed in a loop to prevent balloon puncture.
References Cited (Backward Citations)
DE837122C
Cited
US3774596A
Cited
US3868956A
Cited
US4038703A
Cited
US4130904A
Cited
US4319363A
Cited
US4300244A
Cited
US4402307A
Cited
US4604762A
Cited
US4553545A
Cited
US4655771A
Cited
US4655771B1
Cited
US4531933A
Cited
US4503569A
Cited
US4647416A
Cited
US4619246A
Cited
US4580568A
Cited
EP0183372A1
Cited
US5037377A
Cited
US4760849A
Cited
US4923464A
Cited
US4705517A
Cited
US4776337A
Cited
US4733665B1
Cited
US4733665C2
Cited
US4739762A
Cited
US4733665A
Cited
US4776337B1
Cited
US4739762B1
Cited
US4922905A
Cited
US4681110A
Cited
US4665918A
Cited
US4649922A
Cited
US4767418A
Cited
US4768507A
Cited
US4878906A
Cited
US4875480A
Cited
US4848343A
Cited
US4762128A
Cited
US4800882A
Cited
US5037427A
Cited
US4813925A
Cited
US4794928A
Cited
US5059211A
Cited
US4795458A
Cited
US4969890A
Cited
US5089005A
Cited
US5133732A
Cited
US4886062A
Cited
US4998539A
Cited
US4870966A
Cited
US4986831A
Cited
US4830003A
Cited
US5019090A
Cited
US4913141A
Cited
US4950227A
Cited
US4856516A
Cited
US5078726A
Cited
US5007926A
Cited
US5062829A
Cited
US4990155A
Cited
US4994071A
Cited
US5015253A
Cited
US5084065A
Cited
US5026377A
Cited
US5034001A
Cited
US5002560A
Cited
US5089006A
Cited
US5108416A
Cited
US5071407A
Cited
US5123917A
Cited
US5078736A
Cited
US5064435A
Cited
US5122154A
Cited
US5108417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-08-04 | 2001-02-03 | 2001-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-04 | 2005-02-03 | 2005-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-04 | 2009-02-03 | 2009-08-05 | $7700.00 | Window Closed / Lapsed |