Surgery – Truss – Pad
Patent
1982-11-12
1985-01-22
Kamm, William E.
Surgery
Truss
Pad
128901, 128902, 330 85, 328167, 364415, A61B 504
Patent
active
044945515
ABSTRACT:
An electrocardiographic amplifier having an integrator in the feedback loop between the amplifier's input and output whose time constant is varied by the duty cycle of a series switch to vary the low frequency 3 dB roll-off point as a function of the detected low frequency noise in the amplifier output signal. A capacitor is switched in parallel with the inverting feedback resistor to lower the high frequency 3 dB roll-off point in response to detected high frequency noise.
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Duffin et al., "A 24 Channel Electrocardiograph Preamplifier" Proceedings 23rd ACEMB-Washington Hilton Hotel, Wash. DC, Nov. 15-19, 1970, p. 193.
Little, III Charles A.
Patterson, III Raymond B.
Kamm William E.
Medicomp, Inc.
Shein Mitchell J.
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