METHODS AND DEVICES FOR IMPROVED EVOKED RESPONSE DETECTION

Described herein are implantable medical devices (IMDs), and methods for use therewith. In certain embodiments, a controller of an IMD controls when a pacing capacitor of the IMD is charged using a first voltage, when the pacing capacitor is being charged using a second voltage, and when the pacing...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Bornzin, Gene A, Bornzin, Alexander R
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Described herein are implantable medical devices (IMDs), and methods for use therewith. In certain embodiments, a controller of an IMD controls when a pacing capacitor of the IMD is charged using a first voltage, when the pacing capacitor is being charged using a second voltage, and when the pacing capacitor is discharged to deliver a pacing pulse between anode and cathode electrodes of, or electrically coupled to, the IMD. By selectively charging the pacing capacitor for a portion of a charge duration using the second voltage, that is greater in magnitude than the first voltage that is used for delivering the pacing pulse, a magnitude of a polarization artifact superimposed on an evoked response within a cardiac electrical signal, sensed using a sensing circuit of the IMD, is reduced compared to if the pacing capacitor were instead charged using the first voltage for the entire charge duration.