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US 7,004,907 B2Granted
Blood-pressure monitoring device featuring a calibration-based analysis
AssigneeTriage Wireless, Inc.
InventorsMatthew J. Banet, Henk Visser
Life of this patent
Estimating the term…
Abstract
A monitoring device (10), method and system are disclosed herein. The monitoring device (10) utilizes a vital sign monitor (16) to determine a plurality of vital signs of the user. The vital sign monitor (16) preferably comprises a light source (3) and photodetector (31) in communication with a pulse oximetry circuit (35).
Claims11
A method for monitoring a patient's blood pressure, the method comprising:
- simultaneously measuring the patient's arterial blood flow with a monitoring device and a calibration blood pressure with a calibration device to obtain at least one numerical calibration curve describing the patient's blood pressure;
- generating an optical waveform based on the flow of blood through an artery of the patient using a vital-sign monitor of the monitoring device, the vital-sign monitor comprising an optical module;
- comparing the optical waveform to a mathematical model that describes a primary wave and a reflected wave in a circulatory system of the patient to determine a plurality of calibration parameters describing a blood-pressure value for the patient;
- comparing the plurality of calibration parameters to the at least one numerical calibration curve to determine a real-time blood-pressure value for the patient;
- and
- wirelessly transmitting the real-time blood-pressure value for the patient.
3 more elements
A method for monitoring a patient's real-time blood pressure, the method comprising:
- simultaneously measuring the patient's arterial blood flow with a monitoring device and a calibration blood pressure with a calibration device to obtain at least one numerical calibration curve describing the patient's blood pressure;
- generating an optical waveform based on the flow of blood through an artery of the patient using the monitoring device, the monitoring device comprising an optical module comprising a light source, a photodetector and a pulse oximetry circuit;
- comparing the optical waveform to a mathematical model that describes a primary wave and a reflected wave in a circulatory system of the patient to determine a plurality of calibration parameters describing a blood-pressure value for the patient;
- comparing the plurality of calibration parameters to the at least one numerical calibration curve to determine a real-time blood-pressure value for the patient;
- and
- wirelessly transmitting the real-time blood-pressure value for the patient from the monitoring device to a hand-held device.
3 more elements
A method for monitoring a patient's blood pressure, the method comprising:
- obtaining at least one numerical calibration curve describing the patient's blood pressure;
- generating an optical waveform based on the flow of blood through the patient's artery;
- fitting the optical waveform to determine calibration parameters describing a blood-pressure value wherein the fitting comprises comparing the optical waveform to a mathematical model that describes a primary wave and a reflected wave in a circulatory system of the patient;
- comparing the calibration parameters to the at least one numerical calibration curve to determine the blood-pressure value;
- and
- wirelessly transmitting the blood-pressure value.
3 more elements
Dependencies are inferred from the claim text.