Pace pulse identification apparatus

Details Pace pulse identification apparatus Pace pulse identification apparatus

1984-04-18

1987-05-12

Kamm, William E.

Surgery

Truss

Pad

128697, A61B 904

Patent

active

046641165

ABSTRACT:
A pace pulse identification apparatus in which low frequency signals are rejected by a filter and the pace pulses and high frequency noise are applied to one input of a comparator. A threshold wave having an amplitude that is not significantly affected by pace pulses or spikes of noise is provided that has a minimum value when steady high frequency noise is absent and a value equal to the sum of the minimum value and a value that varies with the amplitude of high frequency noise when high frequency noise is present and which is applied to the other input of the comparator. The state of the comparator is changed when a pace pulse is present at the output of the filter because its amplitude exceeds that of the threshold wave.

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patent: 4393874 (1983-07-01), Nappholz et al.
Webster, "Reducing Motion Artifacts and Interference in Biopotential Recording", IEEE Trans. Biomed. Eng., vol. BME-31, No. 12, Dec. 1984, pp. 823-826.

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