Apparatus for treating atrial tachyarrhythmias with synchronized shocks
April 30, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProgrammable human tissue stimulator Implantable cardioverter Synchronous intracardiac cardioverter Command atrial cardioverter Rate scanning demand pacemaker and method for treatment of tachycardia Tachycardia reversion pacer Implantable cardiac pacer with discontinuous microprocessor, programmable antitachycardia mechanisms and patient data telemetry Method and apparatus for low energy endocardial defibrillation Apparatus for generating multiphasic defibrillation pulse waveform Implantable cardiac stimulator for detection and treatment of ventricular arrhythmias InventorsAssigneeApplicationNo. 070690 filed on 04/30/1998US Classes:607/5Cardioverting/defibrillatingExaminersPrimary: Kamm, William E.Attorney, Agent or FirmForeign Patent References
International ClassA61N 001/39AbstractAn implantable anti-tachyarrhythmia device which delivers atrial cardioversion or defibrillation pulses heart in response to detection of atrial tachyarrhythmias. The pulses are synchronized to atrial and ventricular events in such a fashion as to assure they occur outside of the vulnerable periods associated with both chambers. The device is provided with a pulse synchronizer which defines a first synchronization interval initiated following a sensed atrial event and a second synchronization interval initiated responsive to a sensed ventricular event and a pulse triggerer which triggers delivery of a cardioversion or defibrillation pulse responsive to the first and second synchronization intervals simultaneously being underway. In particular, the pulse triggerer may be responsive to initiation of the first synchronization interval during the second synchronization interval. In addition, the synchronizer may also define minimum time intervals following ventricular events and the triggerer may additionally be responsive to expiration of a defined minimum time interval following a ventricular event preceding the sensed ventricular event which initiated the second synchronization interval currently underway.Other References
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