US5976169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent with silver coating and method
Assignee: Covidien LP
•
Filing: 1998-11-30
•
Granted: 1999-11-02
•
Expires: 2018-11-30
Abstract
Abstract A stent comprising a cylindrical member formed of metal and having a wall defining a bore extending therethrough along a longitudinal axis and having an inner surface and an outer surface. The wall has a pattern formed therein with openings extending therethrough into the bore. A coating containing silver is adherent to the outer surface of said wall for treatment of undesired conditions in the vessel.
Inventors
- 👤 Mir A. Imran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:25
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2002/91533; A61F2002/91541; A61F2310/00; A61F2310/00389; A61F2310/00395; A61F2310/00419; A61F2310/0052
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
A stent for use in a vessel formed of tissue comprising a cylindrical member formed of metal and having a wall defining a bore extending therethrough along a longitudinal axis, the wall having an inner surface and an outer surface, said wall having a pattern formed therein with openings extending therethrough into the bore and a coating containing silver adherent solely to the outer surface of said wall for forming a bimetallic coupling between the coating and the metal to create electromotive forces which drive silver ions into the surrounding tissue.
Claim 2
Dependent Claim
91 words
A stent for use in a vessel formed of tissue comprising a cylindrical member formed of metal and having a wall defining a bore extending therethrough along a longitudinal axis, the wall having an inner surface and an outer surface, said wall having a pattern formed therein with openings extending therethrough into the bore and a coating containing silver adherent solely to the outer surface of said wall for forming a bimetallic coupling between the coating and the metal to create electromotive forces which drive silver ions into the surrounding tissue.
Claim 3
Dependent Claim
12 words
A stent as in claim 1 wherein said metal is stainless steel.
Claim 4
Dependent Claim
13 words
A stent as in claim 1 wherein said coating is a silver compound.
Claim 5
Dependent Claim
12 words
A stent as in claim 1 wherein said coating is pure silver.
Claim 6
Independent Claim
104 words
A method for treating vessels formed of tissue and having a stent therein formed of metal and having a wall defining a bore extending therethrough and having an inner surface and an outer surface, said wall having a pattern formed therein with openings therein extending into the bore, comprising the step of coating solely the outer surface of the cylindrical member with a coating containing silver for producing silver ions for the treatment of undesired conditions within the vessel and for creating a bimetallic coupling between the silver and the metal to thereby create electromotive forces for driving silver ions into the surrounding tissue.
Claim 7
Independent Claim
104 words
A method for treating vessels formed of tissue and having a stent therein formed of metal and having a wall defining a bore extending therethrough and having an inner surface and an outer surface, said wall having a pattern formed therein with openings therein extending into the bore, comprising the step of coating solely the outer surface of the cylindrical member with a coating containing silver for producing silver ions for the treatment of undesired conditions within the vessel and for creating a bimetallic coupling between the silver and the metal to thereby create electromotive forces for driving silver ions into the surrounding tissue.
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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) | 2002-11-01 | 2003-05-03 | 2003-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-01 | 2007-05-03 | 2007-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-01 | 2011-05-03 | 2011-11-02 | $7700.00 | Window Closed / Lapsed |