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MONITOR FOR MEASURING VITAL SIGNS AND RENDERING VIDEO IMAGES

  • US 20130116515A1
  • Filed: 12/21/2012
  • Published: 05/09/2013
  • Est. Priority Date: 03/05/2007
  • Status: Abandoned Application
First Claim
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1. A device for monitoring a patient'"'"'s blood pressure value, comprising:

  • a first sensor component comprising at least one optical sensor configured to attach near to the patient'"'"'s bicep and measure a first plethysmogram waveform by measuring reflected optical radiation which varies in intensity in response to blood flow in capillaries near a brachial artery;

    a second sensor comprising a pulse oximeter configured to attach to one of the patient'"'"'s fingers and measure a second plethysmogram waveform from tissue near the finger;

    a third sensor connected to the first sensor and comprising at least one electrode configured to attach near the patient'"'"'s torso and measure an ECG waveform; and

    a control component comprising;

    a circuit board that receives the first plethysmogram waveform from the first sensor, the second plethysmogram waveform from the second sensor, and the ECG waveform from the third sensor; and

    a CPU configured to operate an algorithm that generates a blood pressure value by processing the ECG waveform and either the first plethysmogram waveform or the second plethysmogram waveform to determine a transit time, and then combining the transit time with a correction factor determined from at least one of the plethysmogram waveforms to determine the blood pressure value.

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