Cuff electrode
First Claim
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1. A cuff-electrode which is placed around a biological tissue as an extraneural, sleeve-shaped electrode, comprising:
- layers of non-conductive material having provided thereon raised electrodes, individual ones of said raised electrodes being contacted via strip conductors disposed between the layers of non-conductive material;
wherein at least one of the layers of non-conductive material is ensured a cuff-shaped form via one of mechanical pretensioning and use of a shaped memory material; and
wherein said layers of non-conductive material having said raised electrodes thereon are designed in a finger-shape such that fingers thereof lie snugly next to one another in a nerve embracing state of the cuff electrode, said raised electrodes being rod-shaped electrodes provided in an arrayed arrangement on said fingers such that a load pressure on the biological tissue is minimal.
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Abstract
The present invention relates to a cuff-electrode that can be placed as an extraneural, sleeve-shaped electrode about a biological tissue, e.g. a nerve.
202 Citations
15 Claims
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1. A cuff-electrode which is placed around a biological tissue as an extraneural, sleeve-shaped electrode, comprising:
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layers of non-conductive material having provided thereon raised electrodes, individual ones of said raised electrodes being contacted via strip conductors disposed between the layers of non-conductive material; wherein at least one of the layers of non-conductive material is ensured a cuff-shaped form via one of mechanical pretensioning and use of a shaped memory material; and wherein said layers of non-conductive material having said raised electrodes thereon are designed in a finger-shape such that fingers thereof lie snugly next to one another in a nerve embracing state of the cuff electrode, said raised electrodes being rod-shaped electrodes provided in an arrayed arrangement on said fingers such that a load pressure on the biological tissue is minimal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A cuff-electrode for placement about a nerve as an extraneural, sleeve-shaped electrode, comprising:
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a multilayer substrate having a plurality of individual fingers; a multiplicity of rod-shaped electrodes provided in an array form on said individual fingers, each of said multiplicity of rod-shaped electrodes having a height above a surface of the substrate greater than a width of an electrode contact surface; strip conductors disposed between the multilayer substrate for coupling with each of said rod-shaped electrodes; wherein said fingers are arranged such that in a curled state of said sleeve-shaped electrode, the fingers are closely arranged next to one another; and wherein said array form of the rod-shaped electrodes minimizes a load pressure on the nerve when contacted by the electrode contact surfaces. - View Dependent Claims (13, 14, 15)
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Specification