Wake-Up Blood Pressure Timing Control for Transient Change Detection

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Solution Overview

Problem

Existing blood pressure monitors fail to measure blood pressure before and after wake-up, missing transient changes that occur during the transition from sleep to wakefulness.

Innovation Solution

A blood pressure measurement device that sets a scheduled measurement time a predetermined time before wake-up, using alarm times or previous wake-up times, and includes sleep and heart rate detection to optimize timing for accurate measurements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If measurement time is set for when the user is assumed to be reliably asleep, then measurement reliability is improved, but the ability to measure blood pressure before wake-up is lost

Engineering Contradiction:

Improvemeasurement reliabilityVSAvoidmeasurement timing coverage

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies dynamics by making the measurement timing flexible rather than fixed. The measurement scheduled time is dynamically adjusted based on the user's actual wake-up time and sleep depth detection. The system determines measurement timing adaptively - if the user wakes up early, measurements are performed before the originally scheduled time, and if sleep is detected as shallow, measurements are postponed. This dynamic adjustment allows the system to capture blood pressure changes before wake-up while maintaining measurement reliability.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If blood pressure is measured at fixed scheduled times, then device operation simplicity is improved, but transient blood pressure variations before wake-up cannot be detected

Engineering Contradiction:

Improveoperation simplicityVSAvoidblood pressure change detection accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent applies self-service by enabling the system to automatically adjust measurement timing based on detected user state without requiring manual intervention. The measurement control unit autonomously determines when to perform measurements by detecting sleep depth and comparing current time with the measurement scheduled time. The system self-adjusts to perform measurements before wake-up when appropriate, capturing transient blood pressure variations while maintaining simple automated operation for the user.

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If measurement timing is extended to cover wake-up period, then blood pressure change observation capability is improved, but measurement reliability during non-sleep periods decreases

Engineering Contradiction:

Improvemeasurement timing flexibilityVSAvoidmeasurement reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies local quality by making measurement reliability conditional on local user state characteristics. The system performs measurements at different times based on the specific condition - before wake-up when sleep is detected, or at the originally scheduled time when sleep is not detected. The measurement control unit evaluates local conditions (sleep depth, current time relative to measurement scheduled time) and adjusts timing accordingly, ensuring high reliability measurements are performed only when appropriate conditions are met.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12551120B2Blood pressure measurement device and blood pressure measurement method

Publication Date: 2026.02.17 OMRON HEALTHCARE CO LTD

AI summary

A blood pressure measurement device according to an aspect includes a blood pressure measurement unit that measures a blood pressure of a user, a setting unit that sets a measurement scheduled time for a time a predetermined time period before a wake-up scheduled time of the user, and a measurement control unit that causes the blood pressure measurement unit to measure the blood pressure of the user in accordance with the set measurement scheduled time.