"Bulls-eye" surface electromyographic electrode assembly
First Claim
1. A flexible, surface electromyographic electrode apparatus for use on a surface of biological tissue to measure bio-electric signals thereof, said electrode apparatus comprising:
- a conductive signal electrode device having a signal contact adapted to directly contact the surface of the biological tissue to receive and transmit bio-electric signals, and a signal transmission portion electrically coupled to the signal contact;
a conductive ground electrode device having a ground contact to adapted directly contact the surface of the biological tissue, and a ground transmission portion electrically coupled to the ground contact, said ground contact is disposed substantially about the signal contact so as to substantially surround a peripheral edge of the signal contact when both are in contact with the tissue surface; and
an insulation washer device disposed between the signal contact and the ground contact to substantially prevent conductive contact therebetween.
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Accused Products
Abstract
A flexible, surface electromyographic electrode apparatus is provided for use on a surface of biological tissue to measure bio-electric signals thereof. The electrode apparatus includes a conductive signal electrode device having a signal contact adapted to directly contact the surface of the biological tissue, and a signal transmission portion electrically coupled to the signal contact. A conductive ground electrode device of the electrode apparatus includes a ground contact that is adapted directly contact the surface of the biological tissue. A ground transmission portion of the ground electrode device is electrically coupled to the ground contact. The ground contact is disposed substantially about the signal contact so as to substantially surround a peripheral edge of the signal contact when both are in contact with the tissue surface. An insulation washer device is further disposed between the signal contact and the ground contact to substantially prevent conductive contact therebetween.
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Citations
24 Claims
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1. A flexible, surface electromyographic electrode apparatus for use on a surface of biological tissue to measure bio-electric signals thereof, said electrode apparatus comprising:
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a conductive signal electrode device having a signal contact adapted to directly contact the surface of the biological tissue to receive and transmit bio-electric signals, and a signal transmission portion electrically coupled to the signal contact;
a conductive ground electrode device having a ground contact to adapted directly contact the surface of the biological tissue, and a ground transmission portion electrically coupled to the ground contact, said ground contact is disposed substantially about the signal contact so as to substantially surround a peripheral edge of the signal contact when both are in contact with the tissue surface; and
an insulation washer device disposed between the signal contact and the ground contact to substantially prevent conductive contact therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An electromyographic surface electrode assembly for use on a surface of biological tissue to measure bio-electric signals thereof, said electrode assembly comprising:
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a flexible, surface electromyographic electrode apparatus including a conductive signal electrode device having a signal contact adapted to directly contact the surface of the biological tissue to receive and transmit bio-electric signals, and a signal transmission portion electrically coupled to the signal contact;
a conductive ground electrode device having a ground contact to adapted directly contact the surface of the biological tissue, and a ground transmission portion electrically coupled to the ground contact, said ground contact disposed substantially about the signal contact so as to substantially surround a peripheral edge of the signal contact when both are in contact with the tissue surface;
an insulation washer device disposed between the signal contact and the ground contact to substantially prevent conductive contact therebetween;
a substantially non-conductive, flexible, first sheet material disposed between said signal contact and said signal transmission portion, and between said ground contact and said ground transmission portion to substantially prevent conductive contact of said signal transmission portion and said ground transmission portion with the tissue surface; and
a conductive upper guard element positioned substantially adjacent to and substantially over said signal electrode device such that the measured bio-electric signal passing therethrough is substantially shielded from ambient electric fields generated from sources above and external to said electrode apparatus;
a co-axial cable having an inner conductor and an outer conductor shielding the inner conductor, at one portion of said co-axial cable, said inner conductor being electrically coupled to an opposite end of the signal transmission portion of the electrode device for transmission of said bio-electric signals, and said outer conductor being electrically coupled to the upper guard element to substantially shield the inner conductor from said ambient electric fields generated from sources external thereto; and
a high impedance amplifier device having a signal input and a signal output, said signal input being electrically coupled to the inner conductor of the co-axial cable at another portion thereof for receipt of the transmitted bio-electric signals, said signal output being electrically coupled to the outer conductor of the co-axial cable, in a feedback loop, for receipt of at least a portion of the transmitted bio-electric signals, such that the voltage of the signals at said signal input of the high impedance amplifier device is maintained substantially equal to the voltage of the signals output from said signal output thereof. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification