US6464720B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radially expandable stent
Assignee: Cook Medical Technologies LLC
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Filing: 2001-03-30
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Granted: 2002-10-15
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Expires: 2021-03-30
Abstract
Abstract A radially expandable stent (10) made from a cannula or sheet of biocompatible material that includes at least one longitudinal segment (14) comprised of a series of laterally interconnected closed cells (13). Each closed cell of a longitudinal segment is defined laterally by a pair of longitudinal struts (15, 16) that are interconnected at each end by a circumferentially adjustable member (19, 20). When the stent is expanded using a balloon (47), the opposing circumferentially adjustable members deform to allow circumferential expansion of the longitudinal segment, while the length of the segment, as defined by the longitudinal struts, is maintained. Self-expanding versions of the stent utilize a nickel-titanium alloy. Adjacent longitudinal segments are joined by flexible interconnection segments (21) that permit the stent to bend laterally. The flexible interconnection segment is comprised of curvilinear struts (22, 23) that form a series of serpentine bends (81) that distribute lateral bending forces. In a preferred embodiment, a short strut interconnects longitudinal segments and an adjacent interconnection segment. Each interconnection strut attaches to the longitudinal segment within a region (27) at the end (17) of a longitudinal strut (15) dividing two adjacent closed cells.
Inventors
- 👤 Scott E. Boatman
- 👤 Kimberly D. Brummett
- 👤 Thomas A. Osborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:25
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61L; A61L31/00; A61L31/02; A61L31/022; A61L31/14; A61L31/18; A61F2/88; A61F2002/91508; A61F2002/91516; A61F2002/91525; A61F2002/91533; A61F2002/9155; A61F2002/91558; A61F2002/91566; A61F2002/91575; A61F2002/91583; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054; A61F2250/00; A61F2250/0014; A61F2250/0036; A61F2250/0058; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
63 words
A stent comprising a stent body having at least one radiopaque marker, said marker defined by a radiopaque member affixed through an eyelet extending through a portion of said stent body, said eyelet having an internal surface that is irregular, and said radiopaque member being mechanically interlocked with the irregular internal surface within said eyelet, and wherein said internal eyelet surface is threaded.
Claim 2
Dependent Claim
63 words
A stent comprising a stent body having at least one radiopaque marker, said marker defined by a radiopaque member affixed through an eyelet extending through a portion of said stent body, said eyelet having an internal surface that is irregular, and said radiopaque member being mechanically interlocked with the irregular internal surface within said eyelet, and wherein said internal eyelet surface is threaded.
Claim 3
Dependent Claim
13 words
The stent of claim 1 , wherein entrances to said eyelet are chamfered.
Claim 4
Dependent Claim
21 words
The stent of claim 1 , wherein said radiopaque member protrudes slightly outwardly from an outer surface of said stent body.
Claim 5
Dependent Claim
22 words
The stent of claim 1 , wherein said radiopaque member is selected from the group of tungsten, gold, platinum, iridium and barium.
Claim 6
Dependent Claim
12 words
The stent of claim 4 , wherein said radiopaque member is gold.
Claim 7
Dependent Claim
16 words
The stent of claim 1 , wherein said radiopaque member is force fit into said eyelet.
Claim 8
Dependent Claim
56 words
A stent comprising a stent body having at least one radiopaque marker, said marker defined by a radiopaque member affixed through an eyelet extending through a portion of said stent body, said eyelet having an internal surface that has been grit blasted, and said radiopaque member being mechanically interlocked with said internal surface of said eyelet.
Claim 9
Dependent Claim
56 words
A stent comprising a stent body having at least one radiopaque marker, said marker defined by a radiopaque member affixed through an eyelet extending through a portion of said stent body, said eyelet having an internal surface that has been grit blasted, and said radiopaque member being mechanically interlocked with said internal surface of said eyelet.
Claim 10
Dependent Claim
15 words
The stent of claim 7 , wherein said internal surface of said eyelet is threaded.
Claim 11
Dependent Claim
13 words
The stent of claim 8 , wherein entrances to said eyelet are chamfered.
Claim 12
Dependent Claim
21 words
The stent of claim 7 , wherein said radiopaque member protrudes slightly outwardly from an outer surface of said stent body.
Claim 13
Dependent Claim
22 words
The stent of claim 7 , wherein said radiopaque member is selected from the group of tungsten, gold, platinum, iridium and barium.
Claim 14
Dependent Claim
12 words
The stent of claim 11 , wherein said radiopaque member is gold.
Claim 15
Dependent Claim
16 words
The stent of claim 7 , wherein said radiopaque member is force fit into said eyelet.
Claim 16
Dependent Claim
56 words
A stent comprising a stent body having at least one radiopaque marker, said marker defined by a radiopaque member affixed through an eyelet extending through a portion of said stent body, said eyelet having an internal surface that has been acid etched, and said radiopaque member being mechanically interlocked with said internal surface of said eyelet.
Claim 17
Dependent Claim
56 words
A stent comprising a stent body having at least one radiopaque marker, said marker defined by a radiopaque member affixed through an eyelet extending through a portion of said stent body, said eyelet having an internal surface that has been acid etched, and said radiopaque member being mechanically interlocked with said internal surface of said eyelet.
Claim 18
Dependent Claim
15 words
The stent of claim 14 , wherein, said internal surface of said eyelet is threaded.
Claim 19
Dependent Claim
13 words
The stent of claim 15 , wherein entrances to said eyelet are chamfered.
Claim 20
Dependent Claim
21 words
The stent of claim 14 , wherein said radiopaque member protrudes slightly outwardly from an outer surface of said stent body.
Claim 21
Dependent Claim
22 words
The stent of claim 14 , wherein said radiopaque member is selected from the group of tungsten, gold, platinum, iridium and barium.
Claim 22
Dependent Claim
12 words
The stent of claim 18 , wherein said radiopaque member is gold.
Claim 23
Dependent Claim
16 words
The stent of claim 14 , wherein said radiopaque member is force fit into said eyelet.
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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) | 2005-10-14 | 2006-04-15 | 2006-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-10-14 | 2010-04-15 | 2010-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-10-14 | 2014-04-15 | 2014-10-15 | $7700.00 | Window Closed / Lapsed |