Electrophysiological stimulator with variable stimulation pulse
AssigneePacesetter, Inc.
InventorChrister Ekwall
Life of this patent
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Abstract
A heart stimulator has a pulse generator which periodically emits stimulation pulses, least one electrode connectable to the pulse generator and to the heart for transmitting said pulses to the heart and a respiration monitor for monitoring the respiration of the pacemaker user. The heart stimulator adapts the energy to be delivered in a stimulation pulse in response to the information acquired by the respiration monitor which indicates the current stage in the user's respiration cycle.
Claims46
A heart stimulator for stimulating a heart of a human subject, said subject having a respiration cycle with a plurality of respiration stages, said heart stimulator comprising:
- a pulse generator which emits successive stimulation pulses, each stimulation pulse having an energy associated therewith;
- electrode means connected to said pulse generator and implantable in said heart for transmitting said pulses in vivo to said heart;
- respiration monitoring means for monitoring the respiration cycle of said subject for determining a current stage of said subject in said respiration cycle;
- and
- adapter means, connected to said respiration monitor means, for adapting the energy of a stimulation pulse as a function of the stage in the respiration cycle determined by said respiration monitoring means.
A method for stimulating a heart of a human subject, said subject having a respiration cycle with a plurality of respiration stages, said method comprising the steps of:
- emitting successive stimulation pulses, each stimulation pulse having an energy associated therewith;
- transmitting said pulses in vivo to said heart;
- monitoring the respiration cycle of said subject for determining a current stage of
- said subject in said respiration cycle;
- and
- adapting the energy of a stimulation pulse as a function of the stage in the respiration cycle determined by said monitoring of the respiration cycle.
Dependencies are inferred from the claim text.