Patent US2482062A successfully refreshed from Google Patents.
Patent EP0280564B1 successfully refreshed from Google Patents.
EP0280564B1
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EP
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Implantable defribrillation electrodes
Assignee: Intermedics Inc
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Filing: 1988-02-26
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Granted: 1993-06-16
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Expires: 2008-02-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond E. Ideker
- 👤 Michael J. Fine
- 👤 Ross G. Baker, Jr.
- 👤 Richard V. Calfee
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 18:38
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/0587
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
195 words
An electrode system for use in defibrillating the heart (10), in which a first patch electrode (12) is configured for placement directly over the surface of the right ventricle of the heart, a second patch electrode (15) is configured for placement directly over the surface of the left ventricle of the heart, and connecting means (37) are provided for application of electrical energy to the respective electrodes to defibrillate the heart, characterized in that the second electrode (15) is in spaced relationship to the first electrode (12) to form a relatively uniform gap (40) between confronting borders (33) of the two electrodes (12,15) throughout the region of the ventricular septum when the electrodes are in place over the respective ventricles, and the electrodes (12,15) have respective sizes and shapes to encompass a majority of the ventricular myocardium therebetween, toward establishing a relatively uniform potential gradient throughout the entire ventricular mass upon application of electrical energy to the electrodes (12,15), and the gap (40) between the confronting borders (33) of the electrodes is sufficiently wide to resist shunting of current across those borders and to accommodate at least some of the major coronary arteries (43,45) therebetween.
Claim 2
Dependent Claim
50 words
The electrode system according to claim 1, in which each of the electrodes (12,15) comprises a conductive mesh (17) adapted to lie adjacent to the surface of the respective ventricle at one side of the mesh, and a flexible biocompatible insulative backing (20) covering the other side of the mesh.
Claim 3
Dependent Claim
41 words
The electrode system according to claim 2, in which each of the electrodes (12,15) further has a resilient biocompatible insulative border (33) about the entire edge of the respective electrode for suturing thereof to either of the epicardium or the pericardium.
Claim 4
Dependent Claim
24 words
The electrode system according to claim 2, in which each of the electrodes (12,15) has one or more holes (58) in the insulative backing.
Claim 5
Dependent Claim
41 words
The electrode system according to claim 1, in which each of the electrodes (12,15) is contoured to closely conform to the shape of the heart (10) in the region of the ventricle over which the respective electrode is to be placed.
Claim 6
Dependent Claim
54 words
The electrode system according to claim 1, in which each of the electrodes (50,60) is flexible and has a normally flat configuration patterned with a shape which is adequate, when the electrode is in place over the respective ventricle, to encompass the majority of the respective ventricular myocardium with some deformation of the electrode.
Claim 7
Independent Claim
236 words
A method of making patch electrodes (12,15) for use in defibrillating a heart (10), comprising the steps of fashioning a first patch electrode (12) including a conductive layer (17) with an adherent insulative layer (20) overlying only one side thereof and configured with a size and shape substantially conforming to and adequate for coverage of the majority of the right ventricle of the heart when in place over the surface thereof, conductively fastening an electrical lead (37) to the conductive layer (17) of the first patch electrode (12) in a limited area at the border (33) thereof free of the insulative layer (20), fashioning a second patch electrode (15) including a conductive layer (17) with an adherent insulative layer (20) overlying only one side thereof and configured with a size and shape substantially conforming to and adequate for coverage of the majority of the left ventricle of the heart when in place over the surface thereof, conductively fastening an electrical lead (37) to the conductive layer (17) of the second patch electrode (15) in a limited area at the border (33) thereof free of the insulative layer (20), and further sizing and shaping the first and second patch electrodes (12,15) such that when they are in place over the respective ventricles a gap (40) is formed between the confronting borders of the two electrodes along the ventricular septum, substantially equidistant throughout the region of the confrontation.
Claim 8
Dependent Claim
59 words
The method according to claim 7, in which the sizing and shaping of the first and second patch electrodes (12,15) is further such that the gap (40) is sufficiently wide to limit shunting of current across the confronting borders of the two electrodes when the electrodes are energized with defibrillating shocks (69) when in place over the respective ventricles.
Claim 9
Dependent Claim
82 words
The method according to claim 8, in which the sizing and shaping of the first and second patch electrodes (12,15) is further such that the gap (40) between confronting borders of the two electrodes is sufficiently wide to accommodate the ventricular septum therein, so that preferential current flow will be through one ventricle across the septum to the free wall of the other ventricle when the electrodes (12,15) are in place over the respective ventricles and defibrillating shocks (69) are delivered thereto.
Claim 10
Dependent Claim
76 words
The method according to claim 9, in which the sizing and shaping of the first and second patch electrodes (12,15) is further such that the left anterior descending coronary artery (43) and the posterior descending coronary artery (45) will lie in the gap (40) between the confronting borders (33) of the two patch electrodes, to avoid vascular damage from the delivery of defibrillation shocks (69) to the electrodes (12,15) when in place over the respective ventricles.
Claim 11
Dependent Claim
32 words
The method according to claim 7, in which the conductive layer is a mesh (17), and further including the step of forming one or more holes (58) in the insulative backing (20).
Claim 12
Dependent Claim
44 words
The method according to claim 7, in which the first and second patch electrodes (12,15) are fashioned with a contour to conform to the shape of the heart (10) in the region of the respective ventricles over which the electrodes are to be placed.
Claim 13
Dependent Claim
52 words
The method according to claim 7, in which the first and second patch electrodes (50,60) are flexible and fashioned with a flat configuration and a size and shape such that when placed over the respective ventricles each will encompass a substantial portion of the ventricular myocardium with some deformation of the electrode.
Claim 14
Dependent Claim
120 words
An implantable defibrillator (39), comprising an electrical waveform generator (39) for producing a defibrillating waveform (69) on demand, first and second patch electrodes (12,15) to be placed over the left and right ventricles of the heart (10), respectively, and leads (37) for electrically interconnecting the electrical waveform generator with the first and second patch electrodes, characterized in that the two electrodes (12,15) have a substantially uniform gap (40) between their confronting borders when in place over the respective ventricles and the electrodes encompass a majority of the ventricular myocardium, for establishing a uniform potential gradient field throughout the entire ventricular mass when the defibrillating waveform is produced by the electrical waveform generator and delivered to the electrodes via the leads.
Claim 15
Dependent Claim
44 words
The implantable defibrillator (39) of claim 14, in which the gap (40) between the two electrodes (12,15) is sufficient to prevent shunting of current therebetween when the two electrodes are in place over the respective ventricles and the defibrillating waveform (69) is delivered thereto.
Claim 16
Dependent Claim
64 words
The implantable defibrillator (39) of claim 15, in which the gap (40) between the two electrodes (12,15) is further sufficient to accommodate the ventricular septum therein, to establish preferential current flow through one ventricle across the septum to the free wall of the other ventricle, when the two electrodes are in place over the respective ventricles and a defibrillating waveform (69) is delivered thereto.
Claim 17
Dependent Claim
52 words
The implantable defibrillator (39) of claim 16, in which the gap (40) between the two electrodes (12,15) is further sufficient to accommodate the left anterior descending coronary artery (43) and the posterior descending coronary artery (45) therein to avoid vascular damage from the delivery of a defibrillation waveform (69) to the electrodes.
References Cited (Backward Citations)
US2985172A
Cited
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