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    • New Cuffless BP...

    New Cuffless BP measurement solution meets regulatory accuracy limits

    Written by Dr. Kamal Kant Kohli Kohli Published On 2019-11-22T19:20:22+05:30  |  Updated On 22 Nov 2019 7:20 PM IST
    New Cuffless BP measurement solution meets regulatory accuracy limits

    Blood pressure is a key vital sign but has traditionally been difficult to monitor conveniently and accurately. Until now, accurate blood-pressure monitoring could only be achieved with bulky and mechanical cuff-based medical devices. A new cuffless BP measurement solution has been launched that meets regulatory accuracy limits. The optical blood-pressure trending solution can be embedded in smartphones or wearables. It enables users to place their finger on a device for 30-45 seconds while resting to measure blood pressure anywhere and anytime.


    Now, Maxim Integrated Products, Inc. (NASDAQ: MXIM) has introduced a solid-state blood-pressure monitoring solution comprising of a complete integrated optical sensor module, a microcontroller sensor hub and a sensing algorithm to more conveniently track this critical health indicator.


    The MAX30101 (using two LEDs) and MAX30102 (using three LEDs) pulse-oximeter and heart-rate optical sensor modules combine photodetectors, LEDs and analogue front-end (AFE) electronics with an integrated cover glass. This integrated optical design and lenses-on-top approach enable optimal signal-to-noise ratio (SNR) for a small, lower cost and power-efficient module. It comes in a tiny 5.6mm x 3.3mm 14-pin optical package with an I2C interface to the sensor hub IC.


    The MAX32664D sensor hub IC includes firmware which controls the sensor and executes the algorithms which measure cuffless blood pressure, heart rate and blood-oxygen levels. Its ultra-small size (1.6mm x 1.6mm) can easily fit into small devices to seamlessly and effortlessly connect to a device's host microcontroller.


    The MAXREFDES220# provides industry-best accuracy that meets Class-II regulatory limits. For example, under resting-only measurement conditions, the solution provides the following accuracies:




    • Systolic Error: Mean = 1.7mmHg, Std Dev = 7.4mmHg

    • Diastolic Error: Mean = 0.1mmHg, Std Dev = 7.6mmHg

    • For reference, Class-II regulatory limits are |Mean Error| ≤ 5mmHg and Std Dev ≤ 8mm Hg


    This solution requires calibration every four weeks to maintain above accuracies. This is based on independent testing and a limited number of subjects at the resting condition.


    Advantages of the new system are:

    • Best Blood-Pressure Measurement Accuracy Without a Cuff: The ready-to-use reference solution measures trending blood pressure without a cuff and meets Class-II regulatory limits.

    • Ease of Design: Highly integrated optical modules and ready-to-use algorithms in the sensor hub IC, together with complete optical system design guidance, enable customers to easily embed the finger-based blood-pressure solution into their devices.

    • Faster Time to Market: Algorithm code runs on a small, ultra-low-power dedicated sensor hub microcontroller, eliminating the need to integrate new code into an existing application processor.


    Provided by Maxim Integrated Products, Inc.
    accuracy lBP measurementcuffless
    Source : Maxim Integrated Products, Inc.

    Disclaimer: This site is primarily intended for healthcare professionals. Any content/information on this website does not replace the advice of medical and/or health professionals and should not be construed as medical/diagnostic advice/endorsement or prescription. Use of this site is subject to our terms of use, privacy policy, advertisement policy. © 2020 Minerva Medical Treatment Pvt Ltd

    Dr. Kamal Kant Kohli Kohli
    Dr. Kamal Kant Kohli Kohli
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