ClinicalTrials.gg
Status unknownNCT04392765Updated Dec 2, 2022

Efficacy of Intra-oral Neuromuscular Stimulation Training on Snoring and Mild Sleep Apnoea

An interventional study of eXciteOSA in Snoring and Sleep Apnea, Obstructive, sponsored by Signifier Medical Technologies. Status unknown at 6 sites in 4 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-12-02.

Sponsored by Signifier Medical Technologies · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Dec 2022), so the status shown — last known as Enrolling by invitation — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
200
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

It has been shown that a common cause for snoring and throat obstruction (obstructive sleep apnoea (OSA)) is excessive loss of muscle tone in the throat when the investigators go to sleep. This results in the partial collapse of the throat (snoring) or complete collapse (OSA) during sleep.

45% of the male population snore. Sleep apnoea affects 4 to 6% of the population and is associated with increased incidence of raised blood pressure, heart attacks and strokes. Although there are several lifestyle practices associated with snoring such as smoking, obesity and drinking, a significant proportion of people may snore despite not being associated with these.

A solution to this issue is to improve the muscle tone of the throat so that it doesn't collapse so easily. Several studies have shown that certain types of throat exercises can help reduce snoring. Further studies have also shown that using electrical stimulation to exercise the tongue muscles has the same effect.

From this, doctors in the United Kingdom (UK) have developed a new type of device, eXciteOSA, that allows a more accurate and comfortable way of delivering this energy to exercise the tongue muscles. The device works by stimulating the tongue muscles during the day so that the tongue is less likely to collapse during sleep. It is a form of "workout" for the tongue and like other physical exercise regimes, it needs to be repeated regularly for a few weeks to take effect.

The aim of this study is to see if the eXciteOSA device is as effective as the previous methods and if it can reduce snoring and improve sleep quality.

This will be achieved by participants using the eXciteOSA once daily for a six week period. A two night sleep study with watchPAT along with a polysomnography will be completed before and after the therapy to compare results. Questionnaires on sleep quality and quality of life will also be completed pre and post therapy.

Read the detailed description

Study Design: Phase IV prospective, multi-centre post-market surveillance study.

Each site will follow the pre-determined study protocol, collecting endpoint relevant data which will then be analysed according to the methods outlined in this statistical analysis plan (SAP).

In brief, participants will proceed through three phases of the trial. The pre-trial phase collects data on the pre therapy state of the participant, after which they will enter the therapy phase where they use the device once daily for the required period whilst continuing to record the required data. The participant will stop using the device at the end of this stage and have a follow up phase during which trial indices will continue to be recorded.

The eXciteOSA transoral neurostimulation device is a home use device controlled by a mobile app. Its primary indication is for use in snoring in primary snorers or individuals with mild sleep apnoea.

It is reusable device that produces muscular stimulation via electrodes integrated into a mouthpiece used by the candidate. The product will be supplied be Signifier Medical Technologies ltd. The eXciteOSA device comes in a black box which contains the control unit, mouthpiece, universal serial bus (USB) cable and the instructions for use. Only the supplied products should be used together. Use of the product should be discontinued if it appears damaged in any way. The mouthpiece is connected to the control unit via a USB port and Bluetooth connection is established between the control unit and the app.

The device is to be used whilst awake, once daily for 20 minutes. The app automatically times the session and terminates it once completed. The therapy consists of a series of pulse bursts with the basic characteristic of 6 secs burst and 4 seconds rest. During the 20 mins therapy period the pulse frequency will change every 5 mins in a defined sequence. The intensity of the pulses can be controlled be the participant using the app, from a scale of 1 to 15. Patients should select the highest level they can tolerate without any discomfort.

02

Conditions studied

  • Snoring
  • Sleep Apnea, Obstructive
03

In context

Snoring

122 studies on the registry are indexed under Snoring; 15 are open to participants now.

This study's planned enrollment of 200 is above the median of 43 across 95 interventional studies indexed under Snoring.

Browse Snoring studies →

Lead sponsor

Signifier Medical Technologies is the lead sponsor of 4 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Participant is willing and able to give for participation in the trial
  • Male or female, aged 18 years or above
  • AHI 5-15/hr as confirmed by polysomnography performed for screening purposes
  • Snoring complaints for >6 months
  • In possession of a smartphone (to use the application)

Exclusion criteria

Exclusion Criteria:

  • >35 kg/m2
  • AHI >15/h, i.e. evidence of moderate to severe obstructive sleep apnoea (OSA) from polysomnography
  • Symptomatic nasal pathology i.e. septal deviation, nasal polyposis or chronic rhinosinusitis
  • Tonsil Hypertrophy (Tonsil size - Grade 3 or greater)
  • Tongue or lip piercing
  • Pacemaker or implanted medical electrical devices
  • Previous oral surgery for snoring
  • Relevant facial skeletal abnormalities (i.e. syndromic facial deficiencies, severe micrognathia etc.)
  • Pregnancy or planned pregnancy
  • Any criteria that, in the opinion of the investigator, would make the participant unsuitable for the study due to inability to complete required study procedures
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
200 participants (estimated)

Study arms

  • Other
    Therapy arm

    Six week use of eXciteOSA device. Once daily for 20 minutes.

    Device: eXciteOSA

Interventions

  • DeviceeXciteOSA

    eXciteOSA transoral neurostimulation device

06

What researchers measure

Primary outcomes

  1. Change in sleep disordered breathing indices - Apnea Hypopnea Index (AHI)

    To assess the efficacy of daytime trans-oral neuromuscular stimulation training on respiratory indices of Sleep disordered breathing (AHI)

    Time frame: Change between pre-therapy (day 0) and post therapy (day 49)

  2. Change in sleep disordered breathing indices - Oxygen Desaturation Index (ODI)

    To assess the efficacy of daytime trans-oral neuromuscular stimulation training on respiratory indices of Sleep disordered breathing (ODI)

    Time frame: Change between pre-therapy (day 0) and post therapy (day 49)

  3. Change in Objective snoring pre and post therapy

    To assess the efficacy of daytime trans-oral neuromuscular stimulation training on objective snoring in Sleep disordered breathing (% snoring at 40, 45 and 50dB)

    Time frame: Change between pre-therapy (day 0) and post therapy (day 49)

Secondary outcomes

  1. Comparison of sleep quality questionnaires at start and end of therapy - Pittsburgh Sleep Quality Index (PSQI)

    To assess the efficacy of daytime trans-oral neuromuscular stimulation training on snoring sleep quality.

    Time frame: Change between pre-therapy (day 7) and post therapy (day 49)

  2. Comparison of sleep quality questionnaires at start and end of therapy - Epsworth Sleepiness Score (ESS)

    To assess the efficacy of daytime trans-oral neuromuscular stimulation training on snoring sleep quality.

    Time frame: Change between pre-therapy (day 7) and post therapy (day 49)

  3. Comparison of visual analogue scale (VAS) of snoring reported by partner

    To assess the efficacy of daytime trans-oral neuromuscular stimulation training on snoring reported by sleep partner

    Time frame: Change between pre-therapy (day 7) and post therapy (day 49)

  4. Comparison of quality of life questionnaires at start and end of therapy - EQ-5D-5L

    To assess the efficacy of daytime trans-oral neuromuscular stimulation training on quality of life.

    Time frame: Change between pre-therapy (day 7) and post therapy (day 49)

07

Study locations

6 sites
  • Vancouver Hospital
    Vancouver, British Columbia V5Z 1M9, Canada
  • McGill University Health Centre
    Montréal, Canada
  • Advanced Sleep Research GMBH
    Berlin, Germany
  • OLVG, Amsterdam
    Amsterdam, Netherlands
  • Clínica Universidad de Navarra, Pamplona
    Pamplona, Spain
  • Hospital Universitario Doctor Peset, Valencia
    Valencia, Spain
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started May 2020 (actual). Primary completion is estimated for Dec 2022, 31 months after the start.

Of 45 interventional studies with no phase under Snoring, half reached primary completion within 20 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 31. This study's planned 31 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
May 11, 2020
First posted
May 19, 2020
StartActual
May 11, 2020
Primary completionEst.
Dec 30, 2022
CompletionEst.
Sep 30, 2023
Last update
Dec 2, 2022
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 2, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04392765
Lead sponsor
Signifier Medical Technologies
Responsible party
Sponsor
First posted
May 19, 2020
Start date
May 11, 2020
Primary completion
Dec 30, 2022 (estimated)
Completion
Sep 30, 2023 (estimated)
Last update
Dec 2, 2022

Study contacts

Yasser Zayni
study director · Signifier Medical Technologies

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Dec 2022. You cannot join it, but the record below documents what was studied.

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