Belun Ring Platform With an Improved Algorithm for OSA Assessment

NCT04885062 | Completed Results FDA Device

• 1 other identifier: STUDY20201259
• Study Type: interventional
• Target: 136
• Locations: 1 country
• Sites: 1

Brief Summary

OSA is commonly diagnosed with either attended in-lab polysomnography (PSG) or unattended home sleep apnea testing (HSAT). The BLS-100 (Belun Technology Company Limited, Hong Kong) is a novel neural network-based HSAT platform consists of a ring shape pulse oximeter sensor, a cradle, and an improved proprietary analytic algorithm. This study investigates the hypothesis that the BLS-100 is a reasonable HSAT device for OSA assessment.

Conditions

Sleep-Disordered Breathing; Sleep Architecture

Keywords

Obstructive Sleep Apnea; Wearable; Home Sleep Apnea Testing; Photoplethysmography; Validation; Artificial Intelligence

Outcome Measures

Primary Outcomes (1)

• To Evaluate the Ability of the Belun Ring Pulse Oximeter to Gauge the Apnea-Hypopnea Index (AHI)

  Apnea-Hypopnea Index (AHI) is defined as the total number of apnea and hypopnea events per hour of sleep, where higher values indicate more severe sleep-disordered breathing. In this study, standard overnight polysomnography(PSG) and Belun Ring pulse oximeter were simultaneously measured. The AHI derived from PSG data was served as the reference. The primary outcome evaluates the accuracy of the Belun Ring by calculating the difference in Ring-REI by the Belun Ring compared with AHI derived from PSG recordings for each participant. The difference was calculated as: Ring-REI (Belun Ring) - AHI (PSG). Negative values indicate that the Belun Ring estimated a lower AHI than PSG, while positive values indicate that the Belun Ring estimated a higher AHI than PSG. Summary statistics of these differences were used to assess agreement between the Belun Ring device and PSG in measuring sleep apnea severity.

  1 overnight sleep study (1 Day)

Secondary Outcomes (1)

• Sleep Stage Parameters

  1 overnight sleep study (1 Day)

Study Arms (1)

UH-Participant

EXPERIMENTAL

Potential participants with suspected OSA will be identified from the schedule of the UH Beachwood and Bolwell sleep labs.Those subjects who satisfy the study inclusion and exclusion criteria will be approached and invited to participate in the study.

Device: Belun Ring; Diagnostic Test: PSG

Interventions

Belun Ring DEVICE

The Belun Ring sensor will be applied to the proximal phalanx of the index finger in the non-dominant hand of the participating individuals prior to their sleep onset in the sleep lab and will be removed upon awakening at the end of the sleep period on the following morning. The attended in-lab sleep study will be performed simultaneously in a standard fashion.

UH-Participant

PSG DIAGNOSTIC_TEST

All patients scheduled for attended overnight in-lab polysomnography (PSG) in our 2 sleep labs will undergo PSG testing. On the same night of the PSG testing, these same patients will also wear the Belun Ring device. After the study, we will compare results of the Belun Ring device vis-à-vis with the results of the PSG on the same patient.

UH-Participant

Eligibility Criteria

• Age: 18 Years - 80 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Provision of signed and dated informed consent form.
• Age 18-80
• Clinically assessed and suspicious for OSA

You may not qualify if:

• Full night PAP titration study
• On home O2, noninvasive ventilator, diaphragmatic pacing, or any form of nerve stimulator
• Having atrial fibrillation-flutter, pacemaker/defibrillator, LVEF \< 55%, left ventricular assist device (LVAD), or status post cardiac transplantation
• Patients taking narcotics
• Recent hospitalization or recent surgery in the past 30 days
• Unstable cardiopulmonary status on the night of the study judged to be unsafe for sleep study by the sleep tech and/or the on-call sleep physician
• An individual who meets the above criteria but fails to have at least 4 hours of technically valid sleep based on BLS-100 in a diagnostic study or at least 3 hours of technically valid sleep during the diagnostic portion of a split night study will be excluded from statistical analyses.

Sponsors & Collaborators

• Belun Technology Company Limited: lead
• University Hospitals Cleveland Medical Center: collaborator

Study Sites (1)

University Hospitals Cleveland Medical Center

Cleveland, Ohio, 44106, United States

Location

MeSH Terms

Conditions

Sleep Apnea Syndromes; Sleep Apnea, Obstructive

Condition Hierarchy (Ancestors)

Apnea; Respiration Disorders; Respiratory Tract Diseases; Sleep Disorders, Intrinsic; Dyssomnias; Sleep Wake Disorders; Nervous System Diseases

Results Point of Contact

• Title: Dr. Ambrose A. Chiang
• Organization: University Hospitals-Cleveland Medical Center

Ambrose.chiang@uhhospitals.org

216-791-3800

Study Officials

• Ambrose A Chiang, MD

  University Hospitals Cleveland Medical Center

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: No
• Restrictive Agreement: No

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: DIAGNOSTIC
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 4, 2021
• First Posted: May 13, 2021
• Study Start: February 1, 2021
• Primary Completion: June 30, 2021
• Study Completion: June 30, 2022
• Last Updated: April 13, 2026
• Results First Posted: April 13, 2026

Record last verified: 2026-03

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)