Shielded recording electrode system
First Claim
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1. A method of detecting electrical activity of a nerve comprising:
- wrapping at least one electrode tightly about said nerve;
shielding said at least one electrode from electromagnetic interference by wrapping a flap having a conductive shield about said at least one electrode; and
electrically coupling at least one electrical conductor to said at least one electrode whereby said electrical activity of said nerve may be detected from said at least one electrical conductor.
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Abstract
An electrode system for recording neural signals suitable for chronic implantation employing shielding and other techniques to improve signal-to-noise ratio. Three electrically isolated electrodes are used in a tripolar fashion. The electrodes are thin wires which are coated with a conductive gel. Each electrode is wrapped around the nerve trunk and held in place by a dielectric encapsulant. A shielding flap is wrapped about the assembly. The electrodes are coupled to conductors that travel through a shielded tube to the sensing electronics. The shield of the tube is electrically coupled to the shielding flap.
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Citations
14 Claims
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1. A method of detecting electrical activity of a nerve comprising:
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wrapping at least one electrode tightly about said nerve; shielding said at least one electrode from electromagnetic interference by wrapping a flap having a conductive shield about said at least one electrode; and electrically coupling at least one electrical conductor to said at least one electrode whereby said electrical activity of said nerve may be detected from said at least one electrical conductor. - View Dependent Claims (2, 3, 4)
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5. A method of detecting electrical activity of a nerve comprising:
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coating at least one bendable electrode with conductive gel whereby said electrode may be wrapped tightly around said nerve without damaging said nerve; wrapping said at least one bendable electrode around said nerve; electrically coupling at least one electrical conductor to said at least one bendable electrode whereby said electrical activity of said nerve may be detected from said at least one electrical conductor; and wrapping said at least one electrode with a bendable flap. - View Dependent Claims (6, 7, 8)
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9. An electrode system for recording activity of a nerve comprising:
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at least one bendable electrode having an outer surface of conductive gel whereby said at least one electrode may be wound about said nerve; at least one conductor coupled to said at least one electrode; a tube having a lumen containing said at least one conductor; and a flap fixedly attached to said tube adjacent said electrode whereby said at least one electrode may be covered after said at least one electrode is wrapped about said nerve. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification