Rate adaptive cardiac pacer incorporating switched capacitor fil

Details Rate adaptive cardiac pacer incorporating switched capacitor fil Rate adaptive cardiac pacer incorporating switched capacitor fil

1990-03-08

1991-12-24

Kamm, William E.

Surgery

Truss

Pad

128671, A61N 1365

Patent

active

050743031

ABSTRACT:
A rate adaptive cardiac pacemaker incorporating a switched capacitor filter whose cut-off frequency is varied as a function of heart rate allows respiration-related signals appearing in the intracardiac impedance waveform to be separated from signals relating to systolic events over a frequency range of interest, allowing either or both of the respiration-related signal component or the systolic event component to be used in adjusting the pacing rate.

REFERENCES:
patent: 4381786 (1983-05-01), Duggan
patent: 4665919 (1987-05-01), Mensink et al.
patent: 4686987 (1987-08-01), Salo et al.
patent: 4722351 (1988-02-01), Phillipps et al.
patent: 4733667 (1988-03-01), Olive et al.
patent: 4913145 (1990-04-01), Stotts

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