Wrist Oximeter Monitoring With Fingertip Accuracy Verification
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Solution Overview
Problem
Existing oxygen saturation measuring devices, such as those using fingertip contact, hinder continuous measurement due to interference with daily activities, making it difficult to monitor respiratory organ health over time.
Innovation Solution
A wrist-worn band with a first sensor portion to measure wrist artery oxygen saturation and a notification system for respiratory disorder warnings, optionally combined with a fingertip sensor for higher accuracy, allowing continuous and accurate monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If oxygen saturation is measured at the fingertip, then measurement accuracy is improved, but ease of operation deteriorates due to interference with daily activities
Solution Approach 1:
The invention divides the measurement system into two separate sensor portions: a first sensor portion for continuous wrist-based monitoring and a second sensor portion for periodic fingertip verification. This segmentation allows the device to maintain continuous operation at the wrist while periodically validating accuracy through fingertip measurements, thus resolving the contradiction between continuous ease of use and measurement accuracy.
2Ease of operation
If a wrist-worn band is used for continuous measurement, then ease of operation is improved, but measurement precision deteriorates compared to fingertip measurement
Solution Approach 1:
The wrist-based first sensor portion serves as an intermediary for continuous monitoring, while the fingertip-based second sensor portion acts as a reference standard for accuracy validation. The control unit compares measurements from both sensor portions and uses the second sensor portion to correct or validate readings from the first sensor portion, thereby maintaining both continuous ease of operation and measurement precision through the intermediary wrist measurement approach.
3Measurement precision
If fingertip contact is required for measurement, then measurement precision is improved, but productivity deteriorates due to interruption of work activities
Solution Approach 1:
The device performs preliminary continuous monitoring using the wrist-based first sensor portion throughout the day, so that when fingertip measurement opportunities arise, the system already has baseline data and can quickly validate or correct readings. This preliminary continuous action at the wrist eliminates the need for constant fingertip contact, maintaining both productivity and measurement precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables continuous oxygen saturation monitoring without interfering with daily activities, promoting timely respiratory organ health improvements through wrist-based measurement with optional fingertip verification.
Implementation Method 1
a first sensor portion attached to the band, the first sensor portion acquiring pulse wave signals of an artery of the wrist, and measuring oxygen saturation of the artery of the wrist on the basis of the acquired pulse wave signals
Implementation Method 2
a second sensor portion attached to the band and measuring oxygen saturation of an artery of a fingertip of the measurement subject
Data Source
AI summary
The present disclosure relates to an oxygen saturation measuring device with a band wound on a wrist of a measurement subject; a first sensor portion attached to the band; and a notification portion.