US6264690B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent having varying thickness along its length
Assignee: Jomed Implantate GmbH
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Filing: 1999-08-24
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Granted: 2001-07-24
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Expires: 2019-08-24
Abstract
Abstract A stent is a device that is adapted to be implanted into narrowed portions of hollow vessels of a body. The stent ( 1 ) comprises a stent body ( 2 ) that has at least two different wall thicknesses (W E , W H ). The different wall thicknesses result in different flexibility characteristics of the stent in the longitudinal direction. Thus the stent according to the invention prevents irritations of the wall of the vessel in the area of the implanted stent, whereby the risk of restenosis in said area can be reduced considerably.
Inventors
- 👤 Randolph Von Oepen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:45
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/94; Y; Y10; Y10S; Y10S623/00; Y10S623/902; Y10S623/903
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
106 words
A stent for expanding hollow vessels comprising: an expandable stent body having a tubular cross-section with at least two different wall thicknesses, said stent body comprising first and second end portions and a main portion located between said first and second end portions, said main portion having a wall thickness (W H ), said first end portion having a wall thickness (W E1 ), said second end portion having a wall thickness (W E2 ), said wall thickness (W H ) being greater than said wall thickness (W E1 ) of said first end portion, said stent body having a constant inner diameter along its length.
Claim 2
Dependent Claim
106 words
A stent for expanding hollow vessels comprising: an expandable stent body having a tubular cross-section with at least two different wall thicknesses, said stent body comprising first and second end portions and a main portion located between said first and second end portions, said main portion having a wall thickness (W H ), said first end portion having a wall thickness (W E1 ), said second end portion having a wall thickness (W E2 ), said wall thickness (W H ) being greater than said wall thickness (W E1 ) of said first end portion, said stent body having a constant inner diameter along its length.
Claim 3
Dependent Claim
40 words
The stent according to claim 1 , wherein said wall thickness (W E2 ) of said second end of said stent body is substantially equal to said wall thickness (W H ) of said main portion of said stent body.
Claim 4
Dependent Claim
24 words
The stent according to claim 1 , wherein a transition is formed between said main portion and said first end portion that is stepped.
Claim 5
Dependent Claim
26 words
The stent according to claim 1 , wherein a transition is formed between said main portion and said first end portion that is continuously tapered therebetween.
Claim 6
Dependent Claim
17 words
The stent according to claim 4 , wherein said transition is linearly tapered in a conical form.
Claim 7
Dependent Claim
33 words
The stent according to claim 1 , wherein said wall thickness (W E1 ) of said first end portion is equal to said wall thickness (W E2 ) of said second end portion.
Claim 8
Dependent Claim
32 words
The stent according to claim 1 , wherein said wall thickness (W E1 ) of said first end portion differs from said wall thickness (W E2 ) of said second end portion.
Claim 9
Dependent Claim
19 words
The stent according to claim 1 , wherein said first and second end portions have substantially equal longitudinal lengths.
Claim 10
Dependent Claim
27 words
The stent according to claim 1 , wherein said first end portion has a longitudinal length that differs from a longitudinal length of said second end portion.
Claim 11
Dependent Claim
24 words
The stent according to claim 2 , wherein a transition is formed between said main portion and said first end portion that is stepped.
Claim 12
Dependent Claim
26 words
The stent according to claim 2 , wherein a transition is formed between said main portion and said first end portion that is continuously tapered therebetween.
Claim 13
Dependent Claim
17 words
The stent according to claim 11 , wherein said transition is linearly tapered in a conical form.
Claim 14
Dependent Claim
24 words
The stent according to claim 6 , wherein a transition is formed between said main portion and said first end portion that is stepped.
Claim 15
Dependent Claim
26 words
The stent according to claim 6 , wherein a transition is formed between said main portion and said first end portion that is continuously tapered therebetween.
Claim 16
Dependent Claim
17 words
The stent according to claim 14 , wherein said transition is linearly tapered in a conical form.
Claim 17
Dependent Claim
19 words
The stent according to claim 6 , wherein said first and second end portions have substantially equal longitudinal lengths.
Claim 18
Dependent Claim
27 words
The stent according to claim 6 , wherein said first end portion has a longitudinal length that differs from a longitudinal length of said second end portion.
Claim 19
Dependent Claim
24 words
The stent according to claim 9 , wherein a transition is formed between said main portion and said first end portion that is stepped.
Claim 20
Dependent Claim
26 words
The stent according to claim 9 , wherein a transition is formed between said main portion and said first end portion that is continuously tapered therebetween.
Claim 21
Dependent Claim
17 words
The stent according to claim 19 , wherein said transition is linearly tapered in a conical form.
Claim 22
Dependent Claim
19 words
The stent according to claim 9 , wherein said first and second end portions have substantially equal longitudinal lengths.
Claim 23
Dependent Claim
27 words
The stent according to claim 9 , wherein said first end portion has a longitudinal length that differs from a longitudinal length of said second end portion.
Claim 24
Dependent Claim
131 words
A stent for expanding hollow vessels, comprising: an expandable stent body having a tubular cross-section with at least two different wall thicknesses, said stent body comprising first and second end portions and a main portion located between said first and second end portions, said main portion having a wall thickness (W H ), said first end portion having a wall thickness (W E1 ), said second end portion having a wall thickness (W E2 ), said wall thickness (W H ) being greater than said wall thickness (W E1 ) of said first end portion, a transition being formed between said main portion and said first end portion, said transition having a wall thickness smaller than said wall thickness (W EH ) and greater than said wall thickness (W E1 ).
Claim 25
Dependent Claim
131 words
A stent for expanding hollow vessels, comprising: an expandable stent body having a tubular cross-section with at least two different wall thicknesses, said stent body comprising first and second end portions and a main portion located between said first and second end portions, said main portion having a wall thickness (W H ), said first end portion having a wall thickness (W E1 ), said second end portion having a wall thickness (W E2 ), said wall thickness (W H ) being greater than said wall thickness (W E1 ) of said first end portion, a transition being formed between said main portion and said first end portion, said transition having a wall thickness smaller than said wall thickness (W EH ) and greater than said wall thickness (W E1 ).
Claim 26
Dependent Claim
19 words
The stent according to claim 23 , wherein said stent body has a constant inner diameter along its length.
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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) | 2004-07-23 | 2005-01-22 | 2005-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-07-23 | 2009-01-22 | 2009-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-07-23 | 2013-01-22 | 2013-07-24 | $7700.00 | Window Closed / Lapsed |