Miniaturized Battery-Free Wireless Systems for Wearable Pulse Oximetry.

PAPER pubmed Advanced functional materials 2017 Engineering / measurement Effect: unclear Evidence: Insufficient

Read original paper → DOI: 10.1002/adfm.201604373 PMID: 28798658 Evidence Lab

Abstract

Development of unconventional technologies for wireless collection, storage and analysis of quantitative, clinically relevant information on physiological status is of growing interest. Soft, biocompatible systems are widely regarded as important because they facilitate mounting on external (e.g. skin) and internal (e.g. heart, brain) surfaces of the body. Ultra-miniaturized, lightweight and battery-free devices have the potential to establish complementary options in bio-integration, where chronic interfaces (i.e. months) are possible on hard surfaces such as the fingernails and the teeth, with negligible risk for irritation or discomfort. Here we report materials and device concepts for flexible platforms that incorporate advanced optoelectronic functionality for applications in wireless capture and transmission of photoplethysmograms, including quantitative information on blood oxygenation, heart rate and heart rate variability. Specifically, reflectance pulse oximetry in conjunction with near-field communication (NFC) capabilities enables operation in thin, miniaturized flexible devices. Studies of the material aspects associated with the body interface, together with investigations of the radio frequency characteristics, the optoelectronic data acquisition approaches and the analysis methods capture all of the relevant engineering considerations. Demonstrations of operation on various locations of the body and quantitative comparisons to clinical gold standards establish the versatility and the measurement accuracy of these systems, respectively.

AI evidence extraction

At a glance

Study type

Engineering / measurement

Effect direction

unclear

Population

—

Sample size

—

Exposure

RF near-field communication (NFC) wearable device

Evidence strength

Insufficient

Confidence: 66% · Peer-reviewed: yes

Main findings

The paper reports miniaturized, flexible, battery-free wearable pulse oximetry systems using near-field communication (NFC) for wireless capture and transmission of photoplethysmograms. Demonstrations on various body locations and quantitative comparisons to clinical gold standards are described as establishing versatility and measurement accuracy.

Outcomes measured

Device performance for wireless capture/transmission of photoplethysmograms
Blood oxygenation (pulse oximetry) measurement accuracy vs clinical gold standards
Heart rate measurement
Heart rate variability measurement
Radio frequency characteristics of the system
Body-interface material aspects (comfort/irritation considerations)

View raw extracted JSON

{
    "study_type": "engineering",
    "exposure": {
        "band": "RF",
        "source": "near-field communication (NFC) wearable device",
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": null,
    "sample_size": null,
    "outcomes": [
        "Device performance for wireless capture/transmission of photoplethysmograms",
        "Blood oxygenation (pulse oximetry) measurement accuracy vs clinical gold standards",
        "Heart rate measurement",
        "Heart rate variability measurement",
        "Radio frequency characteristics of the system",
        "Body-interface material aspects (comfort/irritation considerations)"
    ],
    "main_findings": "The paper reports miniaturized, flexible, battery-free wearable pulse oximetry systems using near-field communication (NFC) for wireless capture and transmission of photoplethysmograms. Demonstrations on various body locations and quantitative comparisons to clinical gold standards are described as establishing versatility and measurement accuracy.",
    "effect_direction": "unclear",
    "limitations": [],
    "evidence_strength": "insufficient",
    "confidence": 0.66000000000000003108624468950438313186168670654296875,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "wearable",
        "pulse oximetry",
        "photoplethysmogram",
        "NFC",
        "battery-free",
        "flexible electronics",
        "wireless transmission",
        "radio frequency characteristics",
        "biocompatible",
        "optoelectronics"
    ],
    "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract/metadata and may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.

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