Ambulatory blood pressure and vital sign monitoring apparatus, system and method

Abstract

Representative methods, apparatus and systems are disclosed for determining one or more physiological parameters, such as for ambulatory blood pressure and other vital sign monitoring. A representative system comprises first and second wearable apparatuses to be worn on the user's left and right sides, and any of several types of central vital signs monitors. Another representative system is a handheld, singular apparatus to be held in both hands by the user. Another representative system comprises first and second wearable apparatuses without any additional central vital signs monitor. The various embodiments measure a differential pulse arrival time of left and right arterial pressure waves using corresponding determined features, such as a foot or systolic peak, and using the measured differential pulse arrival time and calibration data, determine at least one physiological parameter such as blood pressure, heart rate, stroke rate, and cardiac output.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application is a non-provisional patent application No. 62 / 343,256, filed May 31, 2016, entitled "Ambulatory Blood Pressure and Vital Signs Monitoring Devices, Systems, and Methods" by Jung-Eb Wu et al. application and claim priority to this U.S. Provisional Patent Application; this application is also U.S. Provisional No. 62 / 240,360, filed Oct. 12, 2015, entitled "Ambulatory Blood Pressure Monitor" by Jung-EbWu et al. A non-provisional patent application and claim priority to that US provisional patent application. These applications are assigned together with this application and are hereby incorporated by reference in their entirety and have the same full force and effect as set forth in their entirety throughout this application. technical field [0003] The present invention generally relates to blood pressure and other vital sign monitoring, and more particularly to devices, systems and methods for non-invasiv...

AI Technical Summary

Problems solved by technology

However, existing PTT methods suffer from several problems, including difficulty in measuring PTT, difficulty in calibrating individual PPT with individual BP, and significant inaccuracies due to various factors such as interference from noise and user movement, and Effectively false or inaccurate BP determinations due to changes in measured PTT caused by hydrostatic and hydrodynamic factors in the absence of actual corresponding changes in arterial blood pressure near the heart

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