Module for acquiring electroencephalograph signals from a patient
First Claim
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1. A patient module for acquisition of EEG signals in a harsh electromagnetic and electrostatic environment comprising:
- a. a plurality of high resistance opto-isolators;
b. at least one pre-amplifier structured to suppress EMI to eliminate electrical artifacts;
c. at least two optimized multistage input filters;
d. an optimized input stage circuit topography;
e. an ultra-isolation sub-module;
f. an oversampling sub-module;
g. a multiplexer inter-sample charge dump; and
h. a high-performance low frequency enhanced shielding system configured to shield electronically the amplifier from electromagnetic and electrostatic fields, thereby reducing the artifact of the EEG signal.
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Abstract
A patient module comprising an 8 channel EEG pre-amplifier whose signal acquisition and processing characteristics are optimized for use in the operating room and intensive care unit. This patient module comprises at least an optimized multistage input filter, an optimized input stage circuit topography, ultra-isolation, oversampling, a multiplexer inter-sample charge dump, and high performance low-frequency-enhanced shielding.
743 Citations
13 Claims
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1. A patient module for acquisition of EEG signals in a harsh electromagnetic and electrostatic environment comprising:
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a. a plurality of high resistance opto-isolators;
b. at least one pre-amplifier structured to suppress EMI to eliminate electrical artifacts;
c. at least two optimized multistage input filters;
d. an optimized input stage circuit topography;
e. an ultra-isolation sub-module;
f. an oversampling sub-module;
g. a multiplexer inter-sample charge dump; and
h. a high-performance low frequency enhanced shielding system configured to shield electronically the amplifier from electromagnetic and electrostatic fields, thereby reducing the artifact of the EEG signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification