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NECK-WORN PHYSIOLOGICAL MONITOR

  • US 20180214079A1
  • Filed: 03/26/2018
  • Published: 08/02/2018
  • Est. Priority Date: 09/11/2014
  • Status: Active Grant
First Claim
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1. A sensor for measuring blood pressure (BP) from a patient, the sensor comprising:

  • a sensing portion having a flexible housing;

    an elongated securement member extending from the sensing portion, the elongated securement member being configured to pass at least substantially around the patient'"'"'s neck with sufficient length to support the sensing portion generally against the sternal portion of the patient'"'"'s chest when the sensor is in use and operating;

    at least one pair of electrode contact points disposed within the housing, with each pair of electrode contact points comprising a current-injecting electrode contact point and a voltage-sensing electrode contact point;

    an analog ECG circuit disposed within the housing and in electrical contact with said at least one pair of electrode contact points, the ECG circuit configured to generate an analog ECG waveform based on sensed voltage;

    an analog impedance circuit disposed within the housing and in electrical contact with said at least one pair of electrode contact points, the impedance circuit being configured to generate an analog impedance waveform based on sensed voltage;

    a digital processing system disposed within the housing and comprising a microprocessor and an analog-to-digital converter, the digital processing system being configured to;

         1) digitize the analog ECG waveform to generate a digital ECG waveform, and

         2) digitize the analog impedance waveform to generate a digital impedance waveform; and

    a blood pressure-monitoring system disposed within the housing and configured to operate a first algorithm, which first algorithm collectively processes the digital impedance and digital ECG waveforms to determine a value of BP.

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