Cardiovascular artifact filter

Details Cardiovascular artifact filter Cardiovascular artifact filter

1986-07-22

1988-11-01

Cohen, Lee S.

Surgery

Truss

Pad

128696, 128706, 128708, 128709, 128723, 36441303, 36472419, A61B 508

Patent

active

047812010

ABSTRACT:
For suppressing cardiovascular artifact from a respiration signal derived from a patient's transthoracic impedance, an adaptive filtering device determines the patient's heart rate, converts the respiration signal from an analog to digital representation at a rate proportional to the heart rate, and then filters the digital respiration signal such that that portion of the respiration signal having a frequency content at or above the heart rate is most greatly attenuated.

REFERENCES:
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patent: 4201977 (1980-05-01), Shimiza
patent: 4223682 (1980-09-01), Sherman
patent: 4379460 (1983-04-01), Judell
patent: 4422458 (1983-12-01), Kravath
patent: 4494551 (1985-01-01), Little, III et al.
patent: 4537196 (1985-08-01), Phillipps et al.
patent: 4582068 (1986-04-01), Phillipps et al.
Design of Microcomputer-based Medical Instrumentation by Tompkins et al., published in 1981 by Prentice-Hall, Inc., Pertinent p. 106, lines 21-29.

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