Patent US6468302B2 successfully refreshed from Google Patents.
US6468302B2
Expired / Lapsed
US
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Variable strength stent
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 2001-06-07
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Granted: 2002-10-22
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Expires: 2021-06-07
Abstract
Abstract An expandable stent for implantation in a body lumen, such as an artery, is disclosed. The stent consists of a plurality of radially expandable cylindrical elements generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting members placed so that the stent is flexible in the longitudinal direction. The strength of the stent at a center section or at either end can be varied by increasing the mass of the struts forming each cylindrical element in that center section or end section relative to the lower mass struts in the remaining sections of the stent. Increasing the mass of the struts can be accomplished by, for a given strut thickness, increasing the width of the strut, or increasing the length of a cylindrical element.
Inventors
- 👤 Daniel L. Cox
- 👤 Timothy A. Limon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:16
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2002/91508; A61F2002/91516; A61F2002/91525; A61F2002/91533; A61F2002/9155; A61F2002/91575; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054; A61F2250/00; A61F2250/0014; A61F2250/0036
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
160 words
A longitudinally flexible stent for implanting in a body lumen and expandable from a contracted condition to an expanded condition, comprising: a plurality of adjacent cylindrical elements, each cylindrical element having a circumference extending around a longitudinal stent axis, being substantially independently expandable in the radial direction, wherein the plurality of adjacent cylindrical elements are arranged in alignment along the longitudinal stent axis and define a first end section, a second end section, and a center section therebetween; each cylindrical element having struts having a constant thickness formed in a generally serpentine wave pattern transverse to the longitudinal axis and containing alternating valley portions and peak portions; a plurality of interconnecting members extending between the adjacent cylindrical elements and connecting the adjacent cylindrical elements to one another; and wherein the struts of the cylindrical element in the first end section have a greater mass through a longer strut length than the struts of the cylindrical elements in the center section.
Claim 2
Dependent Claim
160 words
A longitudinally flexible stent for implanting in a body lumen and expandable from a contracted condition to an expanded condition, comprising: a plurality of adjacent cylindrical elements, each cylindrical element having a circumference extending around a longitudinal stent axis, being substantially independently expandable in the radial direction, wherein the plurality of adjacent cylindrical elements are arranged in alignment along the longitudinal stent axis and define a first end section, a second end section, and a center section therebetween; each cylindrical element having struts having a constant thickness formed in a generally serpentine wave pattern transverse to the longitudinal axis and containing alternating valley portions and peak portions; a plurality of interconnecting members extending between the adjacent cylindrical elements and connecting the adjacent cylindrical elements to one another; and wherein the struts of the cylindrical element in the first end section have a greater mass through a longer strut length than the struts of the cylindrical elements in the center section.
Claim 3
Dependent Claim
33 words
The stent of claim 1 , wherein the struts of the cylindrical elements in the second end section have a greater mass than the struts of the cylindrical elements in the center section.
Claim 4
Dependent Claim
29 words
The stent of claim 1 , wherein the struts in the first end section have a greater strut width than the struts in cylindrical elements in the center section.
Claim 5
Dependent Claim
34 words
The stent of claim 1 , wherein the struts in the first end section and the second end section have greater strut widths than the struts in the cylindrical elements in the center section.
Claim 6
Independent Claim
168 words
A method for constructing a longitudinally flexible stent for implanting in a body lumen and expandable from a contracted condition to an expanded condition, the method comprising the steps of: providing a plurality of adjacent cylindrical elements, each cylindrical element having a circumference extending around a longitudinal stent axis, being substantially independently expandable in the radial direction; arranging the plurality of adjacent cylindrical elements in alignment along the longitudinal stent axis to include a first end section, a second end section, and a center section therebetween; forming struts of constant thickness in each cylindrical element in a generally serpentine wave pattern transverse to the longitudinal axis and containing alternating valley portions and peak portions; providing a plurality of interconnecting members extending between the adjacent cylindrical elements and connecting the adjacent cylindrical elements to one another; and providing struts of the cylindrical elements in the first end section that have a greater mass through a greater strut length than the struts of the cylindrical elements in the center section.
Claim 7
Independent Claim
168 words
A method for constructing a longitudinally flexible stent for implanting in a body lumen and expandable from a contracted condition to an expanded condition, the method comprising the steps of: providing a plurality of adjacent cylindrical elements, each cylindrical element having a circumference extending around a longitudinal stent axis, being substantially independently expandable in the radial direction; arranging the plurality of adjacent cylindrical elements in alignment along the longitudinal stent axis to include a first end section, a second end section, and a center section therebetween; forming struts of constant thickness in each cylindrical element in a generally serpentine wave pattern transverse to the longitudinal axis and containing alternating valley portions and peak portions; providing a plurality of interconnecting members extending between the adjacent cylindrical elements and connecting the adjacent cylindrical elements to one another; and providing struts of the cylindrical elements in the first end section that have a greater mass through a greater strut length than the struts of the cylindrical elements in the center section.
Claim 8
Dependent Claim
38 words
The method of claim 5 , wherein the method further comprises providing struts of the cylindrical elements in the first end section having a greater strut width than the struts of the cylindrical elements in the center section.
Claim 9
Dependent Claim
42 words
The method of claim 5 , wherein the method further comprises providing struts of the cylindrical elements in the first end section and second end section having a greater strut width than the struts of the cylindrical elements in the center section.
Claim 10
Dependent Claim
43 words
The method of claim 5 , wherein the method further comprises providing struts of the cylindrical elements in the first end section and the second end section having a greater strut length than the struts of the cylindrical elements in the center section.
References Cited (Backward Citations)
US4241146A
Cited
US4665906A
Cited
US5067957A
Cited
EP0201466A2
Cited
US4725334A
Cited
US4986831A
Cited
US5019090A
Cited
US5195984A
Cited
US5064435A
Cited
US5108417A
Cited
US5344425A
Cited
US5413597A
Cited
US5135536A
Cited
EP0540290A2
Cited
US6066168A
Cited
US5514154A
Cited
EP0541443A1
Cited
US5383892A
Cited
US5395390A
Cited
US5354308A
Cited
US5746765A
Cited
EP0606165A1
Cited
WO1994017754A1
Cited
US5475506A
Cited
US5569295A
Cited
WO1995023563A1
Cited
US5449373A
Cited
US5980552A
Cited
WO1995026695A2
Cited
US5716393A
Cited
EP0688545A1
Cited
US5527324A
Cited
WO1996009013A1
Cited
US5906640A
Cited
WO1996026689A1
Cited
US5800526A
Cited
US5693089A
Cited
DE19537872A1
Cited
US5776161A
Cited
US5810868A
Cited
US6183506B1
Cited
US6217608B1
Cited
US6200337B1
Cited
US6071298A
Cited
US6010539A
Cited
US5861027A
Cited
EP0800801A1
Cited
US5922021A
Cited
US5954743A
Cited
WO1998022159A2
Cited
US5925061A
Cited
US6106548A
Cited
US5827321A
Cited
WO1998048734A1
Cited
US5741327A
Cited
US6344055B1
Cited
US6048361A
Cited
US6017365A
Cited
US6146403A
Cited
US5836966A
Cited
WO1999002105A1
Cited
US5855600A
Cited
US6059822A
Cited
US6206910B1
Cited
US6231598B1
Cited
US5948016A
Cited
US6042606A
Cited
US6071308A
Cited
US6033435A
Cited
US6179867B1
Cited
US6159238A
Cited
US5938697A
Cited
US5911754A
Cited
US6042597A
Cited
US6340366B2
Cited
US6273910B1
Cited
US6273911B1
Cited
US6273901B1
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2005-10-21 | 2006-04-22 | 2006-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-10-21 | 2010-04-22 | 2010-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-10-21 | 2014-04-22 | 2014-10-22 | $7700.00 | Window Closed / Lapsed |