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Artifact rejector for repetitive physiologic-event-signal data

  • US 6,405,076 B1
  • Filed: 07/29/1999
  • Issued: 06/11/2002
  • Est. Priority Date: 09/20/1995
  • Status: Expired due to Term
First Claim
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1. An artifact rejector for repetitive physiologic-event-signal data generated from physiologic-event-measuring equipment, which equipment also generates repetitive heart-beat-related-signal data during a physiologic-event measurement cycle, comprising:

  • physiologic-event-measuring equipment constructed to measure physiologic events of a patient, the equipment also being constructed to generate repetitive physiologic-event signal data and heart-beat-related signal data during a physiologic-event measurement cycle;

    a physiologic-event-signal averager in communication with the physiologic-event-measuring equipment, and constructed to generate and store repetitive averaged physiologic-event-signal data based upon a substantially stable time relationship between corresponding repetitive physiologic-event-signal data and heart-beat-related-signal data, wherein the repetitive averaged physiologic-event-signal data includes less noise than the repetitive physiologic-event-signal data, and constructed to generate and continuously update an averaged-data template by storing the repetitive averaged physiologic-event-signal data monitored for a preselected time interval after an occurrence of the heart-beat-related signal; and

    wherein the physiologic-event-signal averager also includes a sharp roll-off, low pass filter, and wherein the averager is constructed to adjust the filter based upon the physiologic-event-measurement cycle as a way of promoting accurate measurement of physiologic-event parameters by the physiologic-event-measuring equipment.

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