Apparatus for beat buffering techniques varified by arrhythmias

Details Apparatus for beat buffering techniques varified by arrhythmias Apparatus for beat buffering techniques varified by arrhythmias

1985-07-01

1987-03-17

Kamm, William E.

Surgery

Truss

Pad

128653, 128706, 128715, A61B 504

Patent

active

046499300

ABSTRACT:
From a heart sound signal input the occurrence of a first occurring heart sound is detected. Thereupon a predetermined heart sound enable window time is established, which for a first detection cycle is set to approximately the diastolic interval for the maximum heart rate to be detected. If a second heart sound occurs within this heart sound enable window time, this second heart sound is detected as a systole heart sound. The first heart sound may be detected as a diastole heart sound. If a second heart sound does not occur within the heart sound enable window time the procedure is repeated with increasing heart sound enable time as long as a second heart sound occurs within an increased heart sound enable window time. For diagnostics synchronization signals developed exclusively from the heart sound signals are used to validate data from diagnostic equipment such as a gamma camera.

REFERENCES:
patent: 3581735 (1971-06-01), Gentner et al.
patent: 4033335 (1977-07-01), Nickles
patent: 4245647 (1981-01-01), Randall
Williams et al., "Physical Medicine & Biology", v. 25, No. 5, Sep. 1980, pp. 935-940.

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