Method and device for sensing bioelectrical signals
First Claim
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1. A method for deflecting electric currents for measuring ECG, EEG, or EMG on a patient, comprising steps of:
- generating negative pressure to separate epidermis from dermis of the patient to produce a blister;
puncturing the blister by creating an opening in the epidermis; and
positioning an electrode used in the measurement to be in contact with the patient'"'"'s epidermal basement membrane and/or with a water-based medium communicating with the basement membrane through the opening in the epidermis for elimination of electrode impedance.
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Abstract
The invention relates to an electrode device (20), which for the purpose of obviating problems that have existed so far is applicable to the skin in an airtight manner for raising, by means of negative pressure and preferably heat, a portion of the epidermis and causing interstitial fluid and/or the epidermal basement membrane to contact an electrode for a measuring operation.
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Citations
20 Claims
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1. A method for deflecting electric currents for measuring ECG, EEG, or EMG on a patient, comprising steps of:
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generating negative pressure to separate epidermis from dermis of the patient to produce a blister; puncturing the blister by creating an opening in the epidermis; and positioning an electrode used in the measurement to be in contact with the patient'"'"'s epidermal basement membrane and/or with a water-based medium communicating with the basement membrane through the opening in the epidermis for elimination of electrode impedance. - View Dependent Claims (2, 3)
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4. A device for deflecting electric currents for measuring ECG, EEG, or EMG on a patient, comprising:
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a suction cup with adhesive flange which has a cavity which is adapted to be open to epidermis of the patient; means for generating a negative pressure in the suction cup, such that the epidermis is made to separate from dermis of the patient, for producing a blister; means for penetrating or puncturing the blister; and wherein an electrode within the suction cup is movable into contact with the epidermal basement membrane or arranged at a distance from a surface thereof and surrounded by an electrically conducting, water-based medium. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification