Apparatus for monitoring recurrent waveforms
Implantable cardioverter with patient communication
Implantable pulse generator having separate passive sensing reference electrode
Method and apparatus for arrhythmia analysis of ECG recordings
Body tissue depolarization evaluation system
Acoustic signalling apparatus for implantable devices
Physiological devices such as pacemakers and method for providing histogram data
Waveform morphology discriminator and method
System and process for monitoring myocardial integrity
ApplicationNo. 820580 filed on 01/14/1992
US Classes:600/508, Heart600/381, Electrode in artery or blood vessel600/517, Vertical variation of PQRST signal waveform (e.g., amplitude of QRS complex, etc.) detected600/523, Signal display or recording607/36, Feature of stimulator housing or encapsulation607/37, Feature of generator-applicator connection607/60Telemetry or communications circuits
ExaminersPrimary: Howell, Kyle L.
Assistant: Schaetzle, Kennedy J.
Attorney, Agent or Firm
International ClassA61B 005/043.2
AbstractAn implantable cardiac monitor is arranged for detecting both arrhythmias and ischemia of the human heart. The monitor includes subcutaneous electrodes for establishing electrical contact with the heart and a sense amplifier coupled to each electrode for generating an electrocardiogram of a heart beat sensed at each of the electrodes. The electrocardiograms are digitized and the digital samples thereof are stored in a memory. A microprocessor processes the digital samples of the electrocardiograms and generates characterizing data indicative of the physiology of the heart. The cardiac monitor includes telemetry to permit the cardiac data to be interrogated externally of the patient for obtaining the generated cardiac data indicative of arrhythmic and ischemic episodes.