Validation of a Novel Device for Screening Patients With Symptoms of Obstructive Sleep Apnea

NCT04121923 | Completed Results FDA Device

• 1 other identifier: PR 2018-259
• Study Type: interventional
• Target: 70
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to evaluate the sensitivity and specificity of the Belun Ring Pulse Oximetry system for screening of obstructive sleep apnea (OSA) in adults during standard polysomnography sleep study conditions. The primary outcome metric is the Apnea-Hypopnea Index (AHI). The goal, in its entirety, is to evaluate the performance of the Belun Ring Pulse Oximeter during a standard polysomnography sleep study and its ability to compare to the determined Apnea-Hypopnea Index (AHI) of the subjects. It is expected that the Belun Ring Pulse Oximeter will adequately record SpO2, pulse rate, body position and heart rate variability throughout the duration of the study.

Conditions

Sleep Apnea, Obstructive

Outcome Measures

Primary Outcomes (1)

• To Evaluate the Ability of the Ring-REI Measured by Belun Ring to Gauge the AHI Measured by PSG

  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)

Study Arms (1)

Participant

EXPERIMENTAL

All patients scheduled for attended overnight in-lab polysomnography (PSG) 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 with the results of the PSG on the same patient. There will be no separate arm to test a different device.

Device: Belun Ring Pulse Oximeter

Interventions

Belun Ring Pulse Oximeter DEVICE

Belun Ring Pulse Oximeter allows measurement and analysis of oximetry, pulse rate, photo-plethysmography (PPG), and accelerometer signals from the proximal phalanx of index finger. Total sleep time (Ring-TST) and respiratory event index (Ring-REI) are estimated

Participant

Eligibility Criteria

• Age: 18 Years - 90 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Subject must have the ability to understand and provide written informed consent.
• Subject is 18 to 90 years of age.
• Subject must be willing and able to comply with study procedures and duration.
• Male or female of any race.

You may not qualify if:

• Subject requires oxygen therapy or noninvasive ventilation.
• Subject has a current diagnosis of chronic obstructive pulmonary disorder (COPD), neuromuscular disease, periodic limb movement, or narcolepsy.
• Compromised circulation, injury, or physical malformation of fingers, toes, hands, ears or forehead/skull or other sensor sites which would limit the ability to test sites needed for the study. (Note: Certain malformations may still allow subjects to participate if the condition is noted and would not affect the particular sites utilized.)
• Subject is on medication known to interfere with heart rate, such as beta blockers, digoxin, or calcium receptor agonists.
• Subjects with severe contact allergies to standard adhesives, latex or other materials found in pulse oximetry sensors, ECG electrodes, respiration monitor electrodes or other medical sensors (self-reported).
• Unwillingness or inability to remove colored nail polish from test digits.
• Other known health condition, which should be considered.

Sponsors & Collaborators

• Belun Technology Company Limited: lead
• Clinimark, LLC: collaborator

Study Sites (1)

Mountain Sleep Diagnostics

Denver, Colorado, 80231, United States

Location

Related Publications (1)

• Gu W, Leung L, Kwok KC, Wu IC, Folz RJ, Chiang AA. Belun Ring Platform: a novel home sleep apnea testing system for assessment of obstructive sleep apnea. J Clin Sleep Med. 2020 Sep 15;16(9):1611-1617. doi: 10.5664/jcsm.8592.

  PMID: 32464087 DERIVED

MeSH Terms

Conditions

Sleep Apnea, Obstructive

Condition Hierarchy (Ancestors)

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

Results Point of Contact

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

Ambrose.chiang@uhhospitals.org

216-791-3800

Publication Agreements

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

Study Design

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

Study Record Dates

• First Submitted: October 9, 2019
• First Posted: October 10, 2019
• Study Start: March 1, 2018
• Primary Completion: April 15, 2019
• Study Completion: May 30, 2019
• Last Updated: May 26, 2026
• Results First Posted: May 26, 2026

Record last verified: 2026-04

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)