US6325825B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent with variable wall thickness
Assignee: Cordis US Corp
•
Filing: 1999-04-08
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Granted: 2001-12-04
•
Expires: 2019-04-08
Abstract
Abstract A stent is made flexible along its length. The stent initially starts as a metal sheet. It is rolled in its central region to a specified wall thickness. Thereafter, the stent is photochemically etched to produce the desired cell pattern of the design of the stent. Then, the stent is folded and the metal is joined to give rise to a stent with multiple wall thickness. For instance, larger wall thicknesses at the end of the stent versus smaller wall thicknesses at its center. Various other possible manufacturing methods are useful with respect to this stent.
Inventors
- 👤 John S. Kula
- 👤 James E. Umbach
- 👤 Andreina Gomez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:44
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/95; A61F2/958; A61F2002/91525; A61F2002/91533; A61F2002/91541; A61F2002/9155; A61F2002/91558; A61F2002/91575; A61F2250/00; A61F2250/0014; A61F2250/0018; A61F2250/0029; A61F2250/0036
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
78 words
A stent comprising: a generally tubular device with a diameter and a length having a pattern of interconnected struts, said struts being cut from said tubular device, and said struts having a cross-sectional width and thickness; and said strut thickness being variable along the length of said stent; and wherein at least one of said struts with such a variable thickness comprises said strut having a relatively greater thickness, a relatively smaller thickness and a relatively intermediate thickness.
Claim 2
Dependent Claim
78 words
A stent comprising: a generally tubular device with a diameter and a length having a pattern of interconnected struts, said struts being cut from said tubular device, and said struts having a cross-sectional width and thickness; and said strut thickness being variable along the length of said stent; and wherein at least one of said struts with such a variable thickness comprises said strut having a relatively greater thickness, a relatively smaller thickness and a relatively intermediate thickness.
Claim 3
Dependent Claim
12 words
The stent of claim 1 used in combination with a balloon catheter.
Claim 4
Dependent Claim
10 words
The stent of claim 1 wherein said stent is self-expanding.
Claim 5
Dependent Claim
32 words
The stent as in claim 1 wherein said variable strut thickness is varied along the length of the strut so that said strut is thicker at its ends than in its middle.
Claim 6
Dependent Claim
41 words
The stent of claim 1 wherein said struts are configured so that there are portions of relative thickness and relative thinness along the length of the stent, and said portions of relative thickness are interspersed between said portions of relative thinness.
Claim 7
Dependent Claim
31 words
The stent of claim 1 wherein the stent has a portion of relative thickness at one of said ends, and a portion of relative thinness at a second of said ends.
Claim 8
Dependent Claim
64 words
A stent comprising: a balloon expandable mechanism formed from a series of interconnected struts, said struts having a cross-sectional width and thickness; and said strut thickness being variable along the length of said strut; and wherein at least one of said struts with such a variable thickness comprises said strut having a relatively greater thickness, a relatively smaller thickness and a relatively intermediate thickness.
Claim 9
Dependent Claim
64 words
A stent comprising: a balloon expandable mechanism formed from a series of interconnected struts, said struts having a cross-sectional width and thickness; and said strut thickness being variable along the length of said strut; and wherein at least one of said struts with such a variable thickness comprises said strut having a relatively greater thickness, a relatively smaller thickness and a relatively intermediate thickness.
Claim 10
Dependent Claim
32 words
The stent as in claim 7 wherein said variable strut thickness is varied along the length of the strut so that said strut is thicker at its ends than in its middle.
Claim 11
Dependent Claim
41 words
The stent of claim 7 wherein said struts are configured so that there are portions of relative thickness and relative thinness along the length of the stent, and said portions of relative thickness are interspersed between said portions of relative thinness.
Claim 12
Dependent Claim
31 words
The stent of claim 7 wherein the stent has a portion of relative thickness at one of said ends, and a portion of relative thinness at a second of said ends.
Claim 13
Dependent Claim
84 words
A stent comprising: a generally tubular device having a diameter and a length and a pattern of interconnected cells formed from a series of struts, said struts being cut into said tubular device and said struts having a cross-sectional width and thickness; and said strut thickness being variable along the length of said stent; and wherein at least one of said struts with such a variable thickness comprises said strut having a relatively greater thickness, a relatively smaller thickness and a relatively intermediate thickness.
Claim 14
Dependent Claim
84 words
A stent comprising: a generally tubular device having a diameter and a length and a pattern of interconnected cells formed from a series of struts, said struts being cut into said tubular device and said struts having a cross-sectional width and thickness; and said strut thickness being variable along the length of said stent; and wherein at least one of said struts with such a variable thickness comprises said strut having a relatively greater thickness, a relatively smaller thickness and a relatively intermediate thickness.
Claim 15
Dependent Claim
32 words
The stent as in claim 11 wherein said variable strut thickness is varied along the length of the strut so that said strut is thicker at its ends than in its middle.
Claim 16
Dependent Claim
41 words
The stent of claim 11 wherein said struts are configured so that there are portions of relative thickness and relative thinness along the length of the stent, and said portions of relative thickness are interspersed between said portions of relative thinness.
Claim 17
Dependent Claim
31 words
The stent of claim 11 wherein the stent has a portion of relative thickness at one of said ends, and a portion of relative thinness at a second of said ends.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2004-12-03 | 2005-06-04 | 2005-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-12-03 | 2009-06-04 | 2009-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-12-03 | 2013-06-04 | 2013-12-04 | $7700.00 | Window Closed / Lapsed |