Low energy defibrillation electrode
First Claim
1. A defibrillation electrode of the type for implantation on or about the heart of a patient for connection to an implantable electrical defibrillation system, said electrode comprising:
- a conductive discharge volume region comprising at least two layers of porous electrically conductive screen, said at least two layers of porous electrically conductive screen substantially filling said conductive discharge volume region but allowing the flow of body fluids therethrough for making intimate electrical contact with the body fluids;
an insulation element attached to said layers of conductive screen for occupying a surface of said electrode facing away from the heart.
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Accused Products
Abstract
An implantable cardiac electrode for use in defibrillation. The electrode comprises a plurality of layers of porous conductive screens and backed by an insulation layer. When implanted on or about the heart surface, body fluids can flow through the screens thus increasing the effective surface area of contact. Each individual layer of mesh can be microscopically textured to create indentations on the layer for further increasing the surface area of each screen, and thus, the surface area of body fluid contact. Also disclosed is an electrode without an insulative backing facing away from the heart.
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Citations
38 Claims
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1. A defibrillation electrode of the type for implantation on or about the heart of a patient for connection to an implantable electrical defibrillation system, said electrode comprising:
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a conductive discharge volume region comprising at least two layers of porous electrically conductive screen, said at least two layers of porous electrically conductive screen substantially filling said conductive discharge volume region but allowing the flow of body fluids therethrough for making intimate electrical contact with the body fluids; an insulation element attached to said layers of conductive screen for occupying a surface of said electrode facing away from the heart. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A defibrillation electrode of the type for implantation on or about the heart of a patient for connection to an electrical defibrillation system, said electrode comprising:
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a conductive discharge volume region comprising at least two layers of porous electrically conductive screen, said at least two layers of porous electrically conductive screen filling said conductive discharge volume region entirely but allowing the flow of body fluids therethrough for making intimate electrical contact with the body fluids; and said at least two layers being disposed substantially parallel to each other and substantially parallel to a reference plane passing through said conductive discharge volume region. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An electrode of the type for implantation on or about the heart of a patient for connection to an electrical defibrillation system, said electrode comprising:
a conductive discharge volume region comprising at least two layers of porous electrically conductive screen, said at least two layers of porous electrically conductive screen filling said conductive discharge volume region entirely but allowing the flow of body fluids therethrough for making intimate electrical contact with the body fluids, said discharge volume region having a first conductive surface facing towards the heart and a second conductive surface facing away from the heart, both of said conductive surfaces for being exposed to body tissue without being insulated therefrom. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38)
Specification