EEG electrode assemblies
First Claim
1. An electrode assembly for establishing an electrical contact with a scalp, the electrode assembly comprising:
- an electrode in a form of a conductive element attached to a lead;
an electrode wrap material substantially surrounding the electrode;
an electrode wrap holder having a cavity configured to accept and hold the electrode wrap material and the electrode substantially surrounded by the electrode wrap material, and to leave exposed a contact portion of the electrode wrap material for contact with the scalp, the electrode wrap holder being configured for attachment to an electrode positioning structure which positions an exposed contact portion of the electrode wrap material in contact with the scalp.
1 Assignment
0 Petitions
Accused Products
Abstract
An EEG electrode system for establishing positive electrical contact with the scalp, uses absorptive electrode wrap material in contact with metallic electrodes, with saturated electrode wrap material placed in contact with the scalp. Saturation of the electrode warp material with a conductive solution such as saline provides mechanically and electrically stable contact at multiple scalp electrode sites. An electrode wrap holder assembly holds the electrode wrap and an exposed portion of the electrode wrap in contact with the scalp, while providing access to the electrode wrap for re-wetting with the conductive solution if required. The electrode wrap holders are mounted in straps, hard caps or other headgear. Adjustment of the electrode wrap holders within the mounts further compresses the flexible, absorptive electrode wrap, causing flow of the conductive solution therein and enhancement of the electrical contact.
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Citations
32 Claims
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1. An electrode assembly for establishing an electrical contact with a scalp, the electrode assembly comprising:
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an electrode in a form of a conductive element attached to a lead;
an electrode wrap material substantially surrounding the electrode;
an electrode wrap holder having a cavity configured to accept and hold the electrode wrap material and the electrode substantially surrounded by the electrode wrap material, and to leave exposed a contact portion of the electrode wrap material for contact with the scalp, the electrode wrap holder being configured for attachment to an electrode positioning structure which positions an exposed contact portion of the electrode wrap material in contact with the scalp. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A wet EEG electrode system for providing one or more electrode contacts with a scalp for EEG analysis, the wet EEG electrode system comprising:
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at least one electrode in contact with an electrode wrap, the electrode wrap being made of an absorptive material, and containing a conductive fluid;
the electrode wrap at least partially within an electrode wrap holder, with a contact portion of the electrode wrap extending from the electrode wrap holder;
the electrode wrap holder being configured for attachment to an electrode positioning device which holds the contact portion of the electrode wrap in contact with the scalp, whereby electrical signals from the scalp are conducted by the conductive fluid in the electrode wrap to the electrode in contact with the electrode wrap. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30)
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29. Electrode assembly for establishing electrically conductive contact with a scalp having an electrode in contact with an electrode wrap, the electrode wrap containing a conductive liquid and being held in contact with the scalp whereby electrical signals can be conducted from the scalp to the electrode by the conductive liquid in the electrode wrap.
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31. A flexible EEG electrode mounting system for positioning a plurality of EEG electrodes against a scalp for EEG analysis, the flexible EEG electrode mounting system comprising:
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a flexible EEG electrode mounting structure made of a flexible material dimensioned to substantially cover a scalp portion of person wearing the mounting structure;
openings in the mounting structure adapted to engage an electrode assembly, the electrode assembly comprising at least one EEG electrode substantially surrounded by an electrode wrap;
the electrode assembly engaged in each of the openings in the mounting structure, the electrode assembly being within a holder which is held in position within the opening by a retainer ring engaged with the opening, whereby a contact portion of the electrode assembly is held in an interior underside portion of the flexible mounting structure, and an electrical lead extends from the electrode assembly and an exterior topside portion of the flexible mounting structure. - View Dependent Claims (32)
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Specification