US6503271B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravascular device with improved radiopacity
Assignee: Cordis US Corp
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Filing: 2000-12-07
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Granted: 2003-01-07
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Expires: 2020-12-07
Abstract
Abstract A stent having marker tabs formed from a micro-alloyed combination of materials provides for more precise placement and post-procedural visualization in a vessel, by increasing the radiopacity of the stent under X-ray fluoroscopy. A unique micro-alloying process is utilized to form the tabs, comprising a first alloy and a second alloy, wherein one of these alloys is radiopaque. This substantially eliminates the possibility of galvanic action between the tab and the stent. This process is also applicable to other medical devices.
Inventors
- 👤 Thomas Duerig
- 👤 Mark L. Mathis
- 👤 Alan Roy Pelton
- 👤 Dieter Stoeckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:47
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2002/91533; A61F2002/9155; A61F2002/91558; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/005; A61F2230/0054; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098; Y; Y10; Y10S; Y10S623/00; Y10S623/901
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
96 words
A stent, comprising: a) a thin-walled tubular member having front and back open ends and having a first diameter for insertion into a vessel and a second diameter for deployment in said vessel; and b) at least one radiopaque tab mounted to at least one of said front and back open ends, said tab being integral to the thin-walled tubular member and comprising a micro-alloy structure, including a material from which the thin-walled tubular member is constructed and at least a second radiopaque material, said tab assuming a substantially spherical shape from the micro-alloy forming process.
Claim 2
Dependent Claim
96 words
A stent, comprising: a) a thin-walled tubular member having front and back open ends and having a first diameter for insertion into a vessel and a second diameter for deployment in said vessel; and b) at least one radiopaque tab mounted to at least one of said front and back open ends, said tab being integral to the thin-walled tubular member and comprising a micro-alloy structure, including a material from which the thin-walled tubular member is constructed and at least a second radiopaque material, said tab assuming a substantially spherical shape from the micro-alloy forming process.
Claim 3
Dependent Claim
16 words
The stent according to claim 1 , wherein said stent is made from a superelastic alloy.
Claim 4
Dependent Claim
26 words
The stent according to claim 2 , wherein said superelastic alloy comprises from about 50.5 percent to about 60 percent Nickel and the remainder comprising Titanium.
Claim 5
Dependent Claim
30 words
The stent according to claim 1 , wherein said radiopaque alloy is chosen from a group consisting of gold, platinum, tantalum, niobium, molybdenum, rhodium, palladium, silver, hafnium, tungsten and iridium.
Claim 6
Dependent Claim
102 words
A stent, comprising: a) a thin-walled tubular member, made from a superelastic Nickel Titanium alloy, having front and back open ends and having a first diameter for insertion into a vessel and a second diameter for deployment in said vessel; and b) at least one radiopaque tab mounted to least one of said front and back open ends, said tab being integral to the thin-walled tubular member and comprising a micro-alloy structure, including a material from which the thin-walled tubular member is constructed and at least a second, radiopaque material, said tab assuming a substantially spherical shape from the micro-alloy forming process.
Claim 7
Dependent Claim
102 words
A stent, comprising: a) a thin-walled tubular member, made from a superelastic Nickel Titanium alloy, having front and back open ends and having a first diameter for insertion into a vessel and a second diameter for deployment in said vessel; and b) at least one radiopaque tab mounted to least one of said front and back open ends, said tab being integral to the thin-walled tubular member and comprising a micro-alloy structure, including a material from which the thin-walled tubular member is constructed and at least a second, radiopaque material, said tab assuming a substantially spherical shape from the micro-alloy forming process.
Claim 8
Dependent Claim
26 words
The stent according to claim 5 , wherein said superelastic alloy comprises from about 50.5 percent to about 60 percent Nickel and the remainder comprising Titanium.
Claim 9
Dependent Claim
30 words
The stent according to claim 5 , wherein said radiopaque alloy is chosen from a group consisting of gold, platinum, tantalum, niobium, molybdenum, rhodiu, palladium, silver, hafnium, tungsten and iridium.
Claim 10
Dependent Claim
90 words
A stent, comprising: a) a thin-walled tubular member having front and back open ends and having a first diameter for insertion into a vessel and a second diameter for deployment in said vessel; and b) at least one radiopaque tab mounted to said thin-walled tubular member, said tab being integral to the thin-walled tubular member and comprising a micro-alloy structure, including a material from which the thin-walled tubular member is constructed and at least a second, radiopaque material, said tab assuming a substantially spherical shape from the micro-alloy forming process.
Claim 11
Dependent Claim
90 words
A stent, comprising: a) a thin-walled tubular member having front and back open ends and having a first diameter for insertion into a vessel and a second diameter for deployment in said vessel; and b) at least one radiopaque tab mounted to said thin-walled tubular member, said tab being integral to the thin-walled tubular member and comprising a micro-alloy structure, including a material from which the thin-walled tubular member is constructed and at least a second, radiopaque material, said tab assuming a substantially spherical shape from the micro-alloy forming process.
Claim 12
Dependent Claim
97 words
A stent, comprising: a) a thin-walled tubular member, made from a superelastic Nickel Titanium alloy, having front and back open ends and having a first diameter for insertion into a vessel and a second diameter for deployment in said vessel; and b) at least one radiopaque tab mounted to said thin-walled tubular member, said tab being integral to the thin-walled tubular member and comprising a micro-alloy structure, including a material from which the thin-walled tubular member is constructed and at least a second, radiopaque material, said tab assuming a substantially spherical shape from the micro-alloy forming process.
Claim 13
Dependent Claim
97 words
A stent, comprising: a) a thin-walled tubular member, made from a superelastic Nickel Titanium alloy, having front and back open ends and having a first diameter for insertion into a vessel and a second diameter for deployment in said vessel; and b) at least one radiopaque tab mounted to said thin-walled tubular member, said tab being integral to the thin-walled tubular member and comprising a micro-alloy structure, including a material from which the thin-walled tubular member is constructed and at least a second, radiopaque material, said tab assuming a substantially spherical shape from the micro-alloy forming process.
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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) | 2006-01-06 | 2006-07-08 | 2007-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-01-06 | 2010-07-08 | 2011-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-01-06 | 2014-07-08 | 2015-01-07 | $7700.00 | Window Closed / Lapsed |