1986-12-17
1988-07-19
Kamm, William E.
Surgery
Truss
Pad
128716, 128671, A61N 136
Patent
active
047578157
ABSTRACT:
A heart pacemaker has a pulse generator and circuitry for measuring a respiration signal of the user and a control unit for controlling the pulse generator by changing the pulse repetition rate dependent on the respiration signal. A heart action detector is provided for acquiring heart action signals and the respiration signal measuring circuitry includes detectors for measuring the amplitude fluctuations in the heart action signal and supplying those fluctuations to the control unit.
REFERENCES:
patent: 3593718 (1971-07-01), Krasner
patent: 4303075 (1981-12-01), Heilman et al.
patent: 4365636 (1982-12-01), Barker
patent: 4428378 (1984-01-01), Anderson et al.
patent: 4596251 (1986-06-01), Plicchi et al.
"Valsalva-Induced Variations in the Intracardiac Signal", Rosenqvist et al, PACE, vol. 8, Nov.-Dec. 1985, pp. 856-861.
"Variations of the Intraatrial Potential in Patients with a DDD Pacemaker," Langenfeld et al, Cardiac Pacing & Electrophysiology, Jun. 7-11, 1987, pp. 185-189.
"Relationship Between Changes in R Wave Voltage & Cardiac Volumes. A Vectorcardiographic Study During Hemodialysis," Vitolo et al, J. Electrocardiology vol. 20(2), 1987, pp. 138-146.
Hedberg Sven-Erik
Obel Martin
Strandberg Hans
Kamm William E.
Keegan Timothy
Siemens Aktiengesellschaft
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