Patent US6501992B1 successfully refreshed from Google Patents.
US6501992B1
Expired / Lapsed
US
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Radiopaque marking of lead electrode zone in a continuous conductor construction
Assignee: Medtronic Inc
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Filing: 2000-10-17
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Granted: 2002-12-31
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Expires: 2020-10-17
Abstract
Abstract A cardiac transvenous defibrillation lead has a continuous coil conductor within a layer of insulation. A portion of the coil conductor is exposed as a defibrillation electrode. In order to enhance fluoroscopic visualization of the exposed electrode during implant, the end of the exposed electrode is marked with a radiopaque element. The element may be in the form of an adhesive filled with radiopaque material that is used to backfill under the layer of insulation. Alternatively, a tube made of radiopaque material may be installed between the layer of insulation and the coil conductor.
Inventors
- 👤 Elisabeth L. Belden
- 👤 Gregory A. Boser
- 👤 Michael R. Dollimer
- 👤 Mary M. Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:56
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/0563
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
A transvenous lead, comprising: a continuous coil conductor having a proximal portion and a distal portion, the proximal portion covered with a layer of insulation and the distal portion exposed as an electrode, the proximal and distal portions having substantially equivalent radiopaque characteristics; and a tube of radiopaque material, including a Pt/IR spring, installed as a marker over the continuous coil conductor at a location adjacent to a proximal end of the exposed distal portion of the coil conductor; wherein the Pt/IR spring extends from under the layer of insulation, adjacent to the proximal end of the exposed distal portion of the coil conductor, distally, over a portion of the exposed distal portion of the coil conductor.
Claim 2
Dependent Claim
117 words
A transvenous lead, comprising: a continuous coil conductor having a proximal portion and a distal portion, the proximal portion covered with a layer of insulation and the distal portion exposed as an electrode, the proximal and distal portions having substantially equivalent radiopaque characteristics; and a tube of radiopaque material, including a Pt/IR spring, installed as a marker over the continuous coil conductor at a location adjacent to a proximal end of the exposed distal portion of the coil conductor; wherein the Pt/IR spring extends from under the layer of insulation, adjacent to the proximal end of the exposed distal portion of the coil conductor, distally, over a portion of the exposed distal portion of the coil conductor.
Claim 3
Dependent Claim
118 words
A transvenous lead, comprising: a continuous coil conductor having a proximal portion and a distal portion, the proximal portion covered with a layer of insulation and the distal portion exposed as an electrode, the proximal and distal portions having substantially equivalent radiopaque characteristics; and a body of adhesive filled with a radiopaque material positioned as a marker around the continuous coil conductor at a location adjacent to a proximal end of the exposed distal portion of the coil conductor; wherein the body of adhesive extends from under the layer of insulation, adjacent to the proximal end of the exposed distal portion of the coil conductor, distally, over a portion of the exposed distal portion of the coil conductor.
Claim 4
Dependent Claim
118 words
A transvenous lead, comprising: a continuous coil conductor having a proximal portion and a distal portion, the proximal portion covered with a layer of insulation and the distal portion exposed as an electrode, the proximal and distal portions having substantially equivalent radiopaque characteristics; and a body of adhesive filled with a radiopaque material positioned as a marker around the continuous coil conductor at a location adjacent to a proximal end of the exposed distal portion of the coil conductor; wherein the body of adhesive extends from under the layer of insulation, adjacent to the proximal end of the exposed distal portion of the coil conductor, distally, over a portion of the exposed distal portion of the coil conductor.
Claim 5
Dependent Claim
122 words
A transvenous lead, comprising: a continuous coil conductor having a proximal portion and a distal portion, the proximal portion covered with a layer of insulation and the distal portion exposed as an electrode, the proximal and distal portions having substantially equivalent radiopaque characteristics; and a tube of radiopaque material, including a polymer filled with barium sulfate, installed as a marker over the continuous coil conductor at a location adjacent to a proximal end of the exposed distal portion of the coil conductor; wherein the tube of radiopaque material extends from under the layer of insulation, adjacent to the proximal end of the exposed distal portion of the coil conductor, distally, over a portion of the exposed distal portion of the coil conductor.
Claim 6
Dependent Claim
122 words
A transvenous lead, comprising: a continuous coil conductor having a proximal portion and a distal portion, the proximal portion covered with a layer of insulation and the distal portion exposed as an electrode, the proximal and distal portions having substantially equivalent radiopaque characteristics; and a tube of radiopaque material, including a polymer filled with barium sulfate, installed as a marker over the continuous coil conductor at a location adjacent to a proximal end of the exposed distal portion of the coil conductor; wherein the tube of radiopaque material extends from under the layer of insulation, adjacent to the proximal end of the exposed distal portion of the coil conductor, distally, over a portion of the exposed distal portion of the coil conductor.
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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) | 2005-12-30 | 2006-07-01 | 2006-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-12-30 | 2010-07-01 | 2010-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-12-30 | 2014-07-01 | 2014-12-31 | $7700.00 | Window Closed / Lapsed |