Combined pacemaker delta modulator and bandpass filter
Pacing pulse compensation Patent #: 4821724
ApplicationNo. 603988 filed on 10/26/1990
US Classes:607/13Reducing output recovery time
ExaminersPrimary: Howell, Kyle L.
Assistant: Getzow, Scott M.
Attorney, Agent or Firm
International ClassA61N 001/362
AbstractAn apparatus adapted to be implanted in a patient for electrically stimulating the heart and analyzing the heart's stimulated response, and a method of operating the apparatus, are disclosed. The apparatus operates to reduce the stimulation polarization artifact that normally accompanies such stimulation, allowing accurate measurement of stimulated cardiac potentials. The apparatus is useful in such devices as cardiac pacemakers, tachycardia reversion devices, and defibrillators. Optimizing features are provided to allow the apparatus to function properly in noisy environments and with suboptimal leads. In addition, provision is included to make the apparatus capable of performing self-diagnosis for determining when accurate sensing is not possible.