Synchronous pacemaker with upper rate stabilization and method of use
Synchronous intracardiac cardioverter
Method and apparatus for automatic detection and treatment of ventricular fibrillation
Heart pacemaker for avoiding pacemaker mediated tachycardia at mode switching
Tachycardia detection for automatic implantable cardioverter/defibrillator with atrial and ventricular sensing capability Patent #: 4860749
ApplicationNo. 621133 filed on 11/30/1990
US Classes:600/510, Testing artificially regulated or assisted heart600/515, Detecting arrhythmia600/518Tachycardia or fibrillation detected
ExaminersPrimary: Howell, Kyle L.
Assistant: Getzow, Scott M.
Attorney, Agent or Firm
Foreign Patent References
International ClassA61B 005/046.4
AbstractA method and apparatus for discriminating among the various normal and pathologic tachycardias. In response to the detection of tachycardia, far-field ventricular electrograms sensed using atrial electrodes and far-field atrial electrograms sensed using ventricular electrodes are analyzed in order to categorize the source and type of tachyarrhythmia detected. The detection method and apparatus may be employed in conjunction with dual chamber anti-bradycardia pacemakers to avoid pacemaker mediated tachycardias or may be employed to mediate the delivery of pacing energy or cardioversion/defibrillation shock energy to a malfunctioning heart, in the context of an implantable antitachycardia device.