Electrode headgear for use in electroencephalography
Inventors
Assignees
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Publication Number
US-12245861-B1
Publication Date
2025-03-11
Expiration Date
Abstract
An apparatus comprises a dual electrode assembly comprising: a non-contact electrode, a dry electrode having multiple contact pins, and a housing configured to enclose the dry electrode when the dry electrode is in a first position, and to expose the multiple contact pins outside the housing when the dry electrode is in a second position.
Core Innovation
The invention provides a head-worn device with a dual electrode assembly mounted upon an interior surface. A non-contact electrode is configured to capacitively couple with a body surface that uses hair as a dielectric when positioned on a user's head, and a dry electrode having multiple contact pins is included in the dual electrode assembly.
The non-contact electrode is mounted on a curved substrate with a concave surface and a convex surface. A first portion of the non-contact electrode is distal to an amplifier and a second portion is proximal to the amplifier, with the concave surface having a central angle of 35 degrees and an arc length of 40 mm, and with the first portion having a width of 17 mm. The amplifier circuit has an input electrically coupled to the non-contact electrode and the dry electrode.
The dry electrode is managed by a housing with a surface having multiple ports configured to enclose the dry electrode in a first position and to expose the multiple contact pins outside the housing in a second position. The multiple contact pins extend through the multiple ports when the dry electrode is in the second position.
Claims Coverage
The provided independent claims are clm-00001 and clm-00010. Across these independent claims, there are four inventive features centered on a dual electrode assembly combining a hair-dielectric non-contact capacitive electrode with a deployable dry multi-pin electrode, integrated with a curved substrate geometry and a ported housing that selectively encloses and exposes the dry electrode.
Dual electrode head-worn apparatus with hair-dielectric capacitive non-contact electrode
A head-worn device having an interior surface with a dual electrode assembly, wherein a non-contact electrode is configured to capacitively couple with a body surface that uses hair as a dielectric when positioned on a user's head, and a dry electrode having multiple contact pins is provided as part of the dual electrode assembly.
Curved substrate concave/convex mounting for non-contact electrode relative to amplifier
The non-contact electrode is mounted on a concave surface of a curved substrate with a first portion distal to the amplifier and a second portion proximal to the amplifier, where the second portion is mounted on a convex surface of the curved substrate; the concave surface has a central angle of 35 degrees and an arc length of 40 mm, and the first portion has a width of 17 mm.
Ported housing to enclose dry electrode in a first position and expose contact pins in a second position
A housing comprising a surface having multiple ports configured to enclose the dry electrode when the dry electrode is in a first position and to expose the multiple contact pins outside the housing when the dry electrode is in a second position, wherein the multiple contact pins extend through the multiple ports when the dry electrode is in the second position.
Dual electrode assembly integrated with amplifier circuit input coupling
An amplifier circuit having an input electrically coupled to the non-contact electrode and the dry electrode.
The independent claim set covers a head-worn dual-electrode EEG apparatus that capacitively couples via hair as a dielectric while also providing a dry electrode with multiple contact pins. The non-contact electrode is mounted on a curved substrate with specified concave and convex geometry relative to the amplifier, and the dry electrode is selectively enclosed and exposed using a housing with multiple ports and first and second positions.
Stated Advantages
The described arrangement addresses limitations associated with conventional gel/adhesive electrodes and hair-induced impairment of non-contact capacitive electrodes.
Documented Applications
Head-worn EEG apparatus.
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