Implantable stimulation device having means for operating in a preemptive pacing mode to prevent tachyarrhythmias and method thereof
January 24, 2017. 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 ReferencesEnergy converter for implantable cardioverter System for prevention of paroxysmal supraventricular tachycardia Automatic implantable defibrillator and pacer Physiologically responsive pacemaker and method of adjusting the pacing interval thereof Pacemaker having PVC response and PMT terminating features Microprocessor controlled rate-responsive pacemaker having automatic rate response threshold adjustment Atrial rate based programmable pacemaker with automatic mode switching means Adaptable, digital computer controlled cardiac pacemaker Arrhythmia prediction and prevention for implanted devices Pacing system for termination of cardiac arrhythmias utilizing scanning techniques InventorsAssigneeApplicationNo. 788152 filed on 01/24/1997US Classes:607/14Treating or preventing abnormally high heart rateExaminersPrimary: Kamm, William E.International ClassA61N 001/362AbstractPreemptive tachyarrhythmia pacing is provided in an implantable cardiac-stimulation device, such as an implantable pacemaker or defibrillator, by modifying the operation of the implantable device in a way that minimizes the likelihood of occurrence of a tachyarrhythmia. The behavior modification is achieved through the use of an appropriate preemptive tachyarrhythmia pacing control routine stored within the memory of the device. Depending upon the needs of the patient, preemptive tachyarrhythmia pacing is invoked continuously or on demand. If invoked on demand, Preemptive tachyarrhythmia pacing is triggered only upon the sensing of one or more conditions suggest that the onset of a tachyarrhythmia is imminent. When thus invoked, preemptive tachyarrhythmia pacing remains invoked only for as long as the onset-of-a-tachyarrhythmia-is-imminent conditions persist. Various preemptive tachyarrhythmia pacing control routines are contemplated, including those based on overdrive pacing, pacing with randomicity, and mode switching. Overdrive pacing, when used, is based on an automatically-determined diurnal rate, an automatic stepped increase over the average atrial rate, or a rate set by a cycle-to-cycle negative hysteresis. Conditions which suggest the imminency of the onset of a tachyarrhythmia include, but are not limited to, a sudden change in the patient's cardiac cycle from a previously-determined normal cardiac cycle.Other References
| |
