US5411546A
Expired / Lapsed
US
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Defibrillation electrode
Assignee: Pacesetter AB
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Filing: 1993-12-06
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Granted: 1995-05-02
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Expires: 2013-12-06
Abstract
Abstract A defibrillation electrode, especially for implantation at an intravascular site in a patient, has a flexible electrode cable containing at least one elongate, electrically insulated conductor with an electrode head disposed at a distal end of the electrode cable, and having at least one defibrillation surface for delivering defibrillation pulses to the patient's heart. The electrode head is constructed so as to be radially expandable and, in an expanded position, defines the contours (surface configuration) of a hollow body so as to provide a defibrillation electrode which is affixable to the vessel in which it is sited, and which has a minimal impact on the flow of blood in that blood vessel.
Inventors
- 👤 Staffan Bowald
- 👤 Jakub Hirschberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:29
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/057; A61N1/0563; A61N2001/0578
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
105 words
A defibrillation electrode for intravascular siting in a patient comprising: a flexible electrode cable containing at least one elongate, electrically insulated conductor having an electrode head formed by a helically wound continuation of said elongate conductor and insulating an uninsulated conductor portion, said electrode head having at least one defibrillation surface for delivering defibrillation pulses to the heart; and said electrode head being radially expandable from a non-expanded state to an expanded state, and defining in the expanded state the contours of a hollow body formed by electrically insulated windings of said helically wound continuation with said uninsulated conduction portion extending straight between said windings.
Claim 2
Dependent Claim
105 words
A defibrillation electrode for intravascular siting in a patient comprising: a flexible electrode cable containing at least one elongate, electrically insulated conductor having an electrode head formed by a helically wound continuation of said elongate conductor and insulating an uninsulated conductor portion, said electrode head having at least one defibrillation surface for delivering defibrillation pulses to the heart; and said electrode head being radially expandable from a non-expanded state to an expanded state, and defining in the expanded state the contours of a hollow body formed by electrically insulated windings of said helically wound continuation with said uninsulated conduction portion extending straight between said windings.
Claim 3
Dependent Claim
48 words
A defibrillation electrode as claimed in claim 1 wherein said hollow body has an outer diameter exceeding a diameter of a blood vessel in which said defibrillation electrode is to be sited for affixing said hollow body to a surrounding vascular wall after introduction into said blood vessel.
Claim 4
Dependent Claim
19 words
A defibrillation electrode as claimed in claim 1 wherein said hollow body is expandable along a longitudinal axis thereof.
Claim 5
Dependent Claim
45 words
A defibrillation electrode as claimed in claim 1 wherein said elongate conductor comprises a helically wound conductor, and wherein said elongate conductor and said electrode head have a continuous channel therein extending along the entire length of the defibrillation electrode, adapted to receive a stylet.
Claim 6
Dependent Claim
18 words
A defibrillation electrode as claimed in claim 1 wherein said hollow body has the shape of a cylinder.
Claim 7
Dependent Claim
23 words
A defibrillation electrode as claimed in claim 1 further comprising an introductory catheter adapted to receive said electrode head in said unexpanded state.
Claim 8
Dependent Claim
16 words
A defibrillation electrode as claimed in claim 1 wherein said electrode head consists of shape-memory metal.
Claim 9
Dependent Claim
43 words
A defibrillation electrode as claimed in claim 1 wherein said hollow body has an interior surface and an exterior surface, and further comprising an insulating layer covering said exterior surface of said hollow body so that said interior surface forms a defibrillation surface.
Claim 10
Dependent Claim
30 words
A defibrillation electrode as claimed in claim 1 wherein said hollow body has a longitudinal axis, and wherein said hollow body has a defibrillation surface extending along said longitudinal axis.
Claim 11
Dependent Claim
100 words
A defibrillation electrode for intravascular siting in a patient comprising: a flexible electrode cable containing at least one elongate, electrically insulated conductor having an electrode head formed by a plurality of parallel, filamentous conductors forming a cylinder and extending along a longitudinal axis of said cylinder, and a plurality of compressible connector bodies interconnecting said filamentous conductors, said electrode head having at least one defibrillation surface for delivering defibrillation pulses to the heart; and said electrode head being radially expandable from a non-expanded state to an expanded state, and defining in the expanded state the contours of a hollow body.
Claim 12
Dependent Claim
100 words
A defibrillation electrode for intravascular siting in a patient comprising: a flexible electrode cable containing at least one elongate, electrically insulated conductor having an electrode head formed by a plurality of parallel, filamentous conductors forming a cylinder and extending along a longitudinal axis of said cylinder, and a plurality of compressible connector bodies interconnecting said filamentous conductors, said electrode head having at least one defibrillation surface for delivering defibrillation pulses to the heart; and said electrode head being radially expandable from a non-expanded state to an expanded state, and defining in the expanded state the contours of a hollow body.
Claim 13
Dependent Claim
24 words
A defibrillation electrode as claimed in claim 10 wherein said connector bodies consist of a plurality of outwardly projecting and inwardly projecting V-shaped bodies.
Claim 14
Dependent Claim
17 words
A defibrillation electrode as claimed in claim 11 wherein said connector bodies consist of electrically conducting material.
Claim 15
Dependent Claim
48 words
A defibrillation electrode as claimed in claim 10 wherein said hollow body has an outer diameter exceeding a diameter of a blood vessel in which said defibrillation electrode is to be sited for affixing said hollow body to a surrounding vascular wall after introduction into said blood vessel.
Claim 16
Dependent Claim
19 words
A defibrillation electrode as claimed in claim 10 wherein said hollow body is expandable along a longitudinal axis thereof.
Claim 17
Dependent Claim
45 words
A defibrillation electrode as claimed in claim 10 wherein said elongate conductor comprises a helically wound conductor, and wherein said elongate conductor and said electrode head have a continuous channel therein extending along the entire length of the defibrillation electrode, adapted to receive a stylet.
Claim 18
Dependent Claim
23 words
A defibrillation electrode as claimed in claim 10 further comprising an introductory catheter adapted to receive said, electrode head in said unexpanded state.
Claim 19
Dependent Claim
16 words
A defibrillation electrode as claimed in claim 10 wherein said electrode head consists of shape-memory metal.
Claim 20
Dependent Claim
43 words
A defibrillation electrode as claimed in claim 10 wherein said hollow body has an interior surface and an exterior surface, and further comprising an insulating layer covering said exterior surface of said hollow body so that said interior surface forms a defibrillation surface.
Claim 21
Dependent Claim
30 words
A defibrillation electrode as claimed in claim 10 wherein said hollow body has a longitudinal axis, and wherein said hollow body has a defibrillation surface extending along said longitudinal axis.
References Cited (Backward Citations)
US4154247A
Cited
US4414986A
Cited
US4825871A
Cited
US4706671A
Cited
US4860769A
Cited
US4852573A
Cited
US4920979A
Cited
EP0373953A2
Cited
US5016808A
Cited
US5221261A
Cited
WO1992011898A1
Cited
US5170802A
Cited
US5279299A
Cited
US5256146A
Cited
US5235977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-05-01 | 1998-10-31 | 1999-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-01 | 2002-10-31 | 2003-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-01 | 2006-10-31 | 2007-05-02 | $7700.00 | Window Closed / Lapsed |