Blood Pressure Waveform Analysis for Pulse Abnormality Detection

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Solution Overview

Problem

Current blood pressure measurement devices are unable to accurately measure blood pressure waveforms for each heartbeat during free movement, limiting the extraction of useful information from continuous data.

Innovation Solution

A biological information analyzing device and system that non-invasively measures blood pressure waveforms using a sensor worn on the body, extracting indicators related to pulse abnormalities and other circulatory functions by analyzing shape, frequency, and statistical characteristics of the waveform, enabling reliable detection of pulse abnormalities and outputting relevant information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If a blood pressure measurement device is used during free movement, then continuous blood pressure waveform measurement is possible, but measurement accuracy deteriorates

Engineering Contradiction:

Improvecontinuous measurement capabilityVSAvoidblood pressure waveform measurement accuracy

Core Design Contradiction:

Duration of action of moving objectVSMeasurement precision

Solution Approach 1:

The patent replaces traditional mechanical cuff-based blood pressure measurement with a sensor-based tonometric system that can continuously measure blood pressure waveforms during free movement, enabling both continuous monitoring and maintaining accuracy through signal processing

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs feedback mechanisms through continuous signal processing and analysis of blood pressure waveform characteristics to maintain measurement accuracy during dynamic conditions, adjusting measurements based on real-time waveform analysis

Inventive Principle:

Principle #23Feedback

2Loss of information

If blood pressure waveform data is collected continuously, then more information can be extracted, but data processing complexity increases

Engineering Contradiction:

Improveinformation extraction capabilityVSAvoiddata processing complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The patent extracts specific useful indicators and information from the continuous blood pressure waveform data through targeted analysis of waveform characteristics, separating valuable information from the complexity of continuous data streams

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the continuous blood pressure waveform data into analyzable sections, extracting specific indicators such as pulse wave interval, pulse pressure, and waveform shape characteristics for systematic analysis

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11617516B2Biological information analysis device, biological information analysis system, program, and biological information analysis method

Publication Date: 2023.04.04 OMRON CORP

AI summary

A biological information analyzing device includes: an indicator extraction unit that extracts an indicator pertaining to a characteristic of a blood pressure waveform using data of the blood pressure waveform obtained by a sensor, which is worn on a user's body and can non-invasively measure the blood pressure waveform for each of heartbeats, continuously measuring the blood pressure waveform; and a processing unit that carries out a process based on the extracted indicator.