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

A - Human Necessities

61

N

326/1.3

A61N 1/365 (2006.01)

Patent

CA 2033777

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.

Cardiostimulateur adaptable au rythme cardiaque, à filtre-condensateur commuté, avec une fréquence de coupure que l'on peut faire varier en fonction du rythme cardiaque; il permet de séparer les signaux associés à la respiration et apparaissant dans l'onde d'impédance intracardiaque des signaux liés aux événements systoliques dans une plage de fréquence cible, et d'utiliser ainsi soit le signal associé à la respiration, soit l'événement systolique, ou encore les deux, pour ajuster le rythme du stimulateur.

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