Surgery – Truss – Pad
Patent
1984-02-23
1985-10-22
Kamm, William E.
Surgery
Truss
Pad
128904, A61B 502
Patent
active
045482047
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 monitoring remotely or by a using recording, an ECG signal is modulated and combined with the associated heart sound signal for use as a single combined signal.
REFERENCES:
patent: 3385289 (1968-05-01), Lawson et al.
patent: 3426151 (1969-02-01), Tygart
patent: 3742938 (1973-07-01), Stern
patent: 3913567 (1975-10-01), Streckmann
patent: 4183354 (1980-01-01), Sibley et al.
Segal et al., "American Journal of Medical Electronics", Jul.-Sep., 1964, pp. 189-191.
Domnanovich James R.
Groch Mark W.
Kamm William E.
Moran John Francis
Siemens Gammasonics Inc.
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