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Long term monitoring of acceleration signals for optimization of pacing therapy

  • US 5,935,081 A
  • Filed: 01/20/1998
  • Issued: 08/10/1999
  • Est. Priority Date: 01/20/1998
  • Status: Expired due to Term
First Claim
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1. A monitor for obtaining and storing physiologic information comprising:

  • (a) a moisture impervious, biocompatible housing having a plurality of electrodes on an exterior surface thereof contacting dermal tissue of a patient in whom the monitor is implanted for detecting ECG signals;

    (b) an accelerometer contained within said housing for detecting mechanical vibration of the housing due to physical activity of the patient and due to heart sounds, and respiratory activity and turbulent blood flow in partially occluded coronary arteries and producing an electrical signal proportional to such activity;

    (c) signal processing means coupled to receive said electrical signal for isolating components of said electrical signal due to physical activity, respiratory activity, heart sounds and turbulent blood flow in partially occluded coronary arteries;

    (d) means for converting said ECG signals and said signal components to digital data;

    (e) means coupled to the converting means for storing said digital data in a memory at addressable locations; and

    (f) means responsive to a signal applied externally of the patient'"'"'s body adapted to telemeter the stored digital data to an external device.

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