Cardioverting system and method with high-frequency pulse delivery
AssigneeMieczyslaw Mirowski
InventorMir Imran
Life of this patent
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Abstract
An implantable cardioverting system wherein a cardioverting or defibrillating voltage is automatically applied across implantable electrodes associated with the heart of a patient. The cardioverting voltage is an exponentially-decaying voltage pulse that is chopped, or broken, at high frequencies to provide a voltage wave packet formed of a plurality of high-frequency cardioverting pulses. The voltage is provided by an internal storage capacitor coupled across implantable electrode leads that is charged to a predetermined voltage level. Upon discharge, an electronic switch is clocked at frequencies preferably in excess of 1 KHz to open and close the circuit formed of the storage capacitor and electrodes.
Claims10
In a cardioversion system for automatically cardioverting the heart of a patient including a storage capacitor, a means for charging the storage capacitor to a predetermined voltage level, a means for discharging the storage capacitor, and a pair of implantable electrodes connectable with said storage capacitor whereby the discharge of the storage capacitor provides an exponentially decaying voltage across said electrodes, wherein the improvement comprises:
- chopping means for electrically connecting said storage capacitor with said implantable electrodes at a predetermined frequency for chopping the exponentially decaying voltage across said implantable electrodes.
An implantable cardioversion system for automatically cardioverting the heart of a patient, comprising:
- detecting means for detecting arrhythmias of the heart;
- cardioverting means responsive to said detecting means for delivering to the heart at least one wave packet of high-frequency cardioverting pulses.
A method of automatically cardioverting the heart of a patient through implantable electrodes comprising the steps of:
- detecting an arrhythmic condition of the heart;
- automatically cardioverting the heart in response to detecting the arrhythmia by delivering at least one cardioverting wave packet of high-frequency cardioverting pulses across the implantable electrodes.
Dependencies are inferred from the claim text.