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Apparatus and method for detecting abnormal cardiac rhythms using an ultrasound sensor in an arrhythmia control system

  • US 5,183,040 A
  • Filed: 03/08/1991
  • Issued: 02/02/1993
  • Est. Priority Date: 03/08/1991
  • Status: Expired due to Term
First Claim
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1. An antiarrhythmia pacing device for the reversion of cardiac arrhythmias comprising:

  • means for generating stimulation pulses and adapted to deliver said pulses to a patient'"'"'s heart,ultrasonic means adapted to be implanted within the patient'"'"'s cardiovascular system for monitoring a cardiac output parameter corresponding to the volume of blood flow per unit of time within the cardiovascular system,means for deriving a cardiac output standard based on a time history of said cardiac output parameter,means for comparing said cardiac output parameter to said cardiac output standard,means responsive to said comparing means for detecting and classifying a pathological cardiac arrhythmia when said cardiac output parameter is less than at least one predetermined percentage of said cardiac output standard, andmeans responsive to said detecting means for controlling said generating means to operate in an antiarrhythmia pacing mode corresponding to said classification.

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