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US 6,324,425 B1Granted
Recharge circuitry for multi-site stimulation of body tissue
AssigneeMedtronic, Inc.
InventorsBrian A. Blow, Jean E. Hudson, Michael B. Terry
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AssigneeMedtronic, Inc.
InventorsBrian A. Blow, Jean E. Hudson, Michael B. Terry
Estimating the term…
Multi-chamber cardiac pacing systems for providing multi-site pacing to at least one of the right and left atria and then synchronously to the right and left ventricles in a triggered pacing sequence while providing for recharge of the output capacitors of each output amplifier in the shortest time. The recharge operations of the present invention come into play when bi-chamber pacing is invoked to deliver right and left heart chamber pacing pulses that are separated by a triggered pacing delay that overlaps, i.e., is shorter than, the recharge time period. In a truncated recharge mode, the first pacing pulse is delivered through the first pacing path, and the recharging of the first pacing path is commenced for the duration of the triggered pacing delay. Then, the second pacing pulse is delivered, and the second pacing path is recharged for a second recharge period. The recharging of the first pacing path is conducted simultaneously with or after completion of the second recharge period. In a postponed and sequential mode, recharging of the first pacing path is postponed until after delivery of the second pacing pulse and recharging of the second pacing path. In a simultaneous pacing mode, recharging of the first pacing path takes place after delivery of the second pacing pulse and simultaneously with recharging of the second pacing path. This invention can be used in cardio defibrillators with pacing capabilities if desired.
A method of repetitively delivering first and second closely spaced electrical stimulation pulses to living tissue through first and second reactive stimulation paths and for recharging the stimulation paths to alleviate polarization after potentials prior to delivery of subsequent stimulation pulses to the same stimulation paths comprising the steps of:
Apparatus for repetitively delivering first and second closely spaced electrical stimulation pulses to living tissue through first and second reactive stimulation paths and for recharging the stimulation paths to alleviate polarization after potentials prior to delivery of subsequent stimulation pulses to the same stimulation paths, the apparatus comprising:
A method of repetitively delivering first and second closely spaced pacing pulses through first and second reactive pacing paths of the heart and for recharging the pacing paths to alleviate polarization after potentials prior to delivery of subsequent pacing pulses to the same pacing paths comprising the steps of:
Apparatus for repetitively delivering first and second closely spaced electrical pacing pulses through first and second reactive pacing paths of the heart and for recharging the pacing paths to alleviate polarization after potentials prior to delivery of subsequent pacing pulses to the same pacing paths, the apparatus comprising:
Dependencies are inferred from the claim text.