ClinicalTrials.gg
RecruitingNCT04133675Updated Jul 9, 2026

BTL Emsella Chair Versus Sham for the Treatment of Stress Urinary Incontinence

An interventional study of BTL Emsella and Sham BTL Emsella in Stress Urinary Incontinence, sponsored by Corewell Health East. Recruiting at 1 site in United States. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-07-09.

Sponsored by Corewell Health East · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Started Dec 2019; still recruiting 6 years 10 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
110
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
01

Study summary

Stress urinary incontinence (SUI) is a condition that affects both men and women. SUI is the involuntary leakage of urine caused by an increase in intra-abdominal pressure from activities such as exercise, coughing, laughing, or sneezing. It can significantly affect quality of life as patients avoid activities or behaviors that cause leakage. This clinical trial will compare the efficacy of the Emsella chair to sham and determine if electromagnetic technology is effective in the treatment of SUI.

Read the detailed description

This is a prospective, sham-controlled, observational study of subjects undergoing electromagnetic perineal stimulation for the treatment of SUI. Eligible subjects will be randomized to receive active treatment or sham in a 1:1 ratio. Eight treatments (2 treatments each week) for 4 weeks will be completed with the Emsella chair to the pelvic floor muscles.

Electromagnetic stimulation of the pelvic floor is a FDA approved therapy whereby a coil generates pulsed electromagnetic fields that penetrate deep into the pelvic floor muscles inducing stimulation and providing rehabilitation of weak pelvic muscles.The Emsella Chair is a novel high-intensity focused electromagnetic (HIFEM) technology for the treatment of SUI, in addition to other pelvic floor related disorders. HIFEM technology induces deep pelvic floor muscle contractions designed to deliver the equivalent of 11,200 Kegel exercises over 28 minutes.This technology is typically not covered by insurance, is minimally invasive, and safe, but has limited data available.

Currently, there is no data available from sham controlled studies evaluating efficacy of this technology. The purpose of this study is to compare the Emsella Chair to sham and to determine whether electromagnetic technology is effective in the treatment of SUI.

02

Conditions studied

  • Stress Urinary Incontinence

Keywords

  • urinary incontinence
  • urine leakage
03

In context

Urinary Incontinence, Stress

651 studies on the registry are indexed under Urinary Incontinence, Stress; 120 are open to participants now.

This study's planned enrollment of 110 is above the median of 68 across 506 interventional studies indexed under Urinary Incontinence, Stress.

Browse Urinary Incontinence, Stress studies →

Lead sponsor

Corewell Health East is the lead sponsor of 19 studies on the registry; 9 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 80 Years
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

  1. Able to read, understand, and provide written, dated, prior to screening, and be likely to comply with study protocol, including independently complete study questionnaires and communicate with study personnel about AEs and other information.
  2. Females and males, 18 to 80 years of age, inclusive, at screening
  3. Positive Cough or Bladder Stress Test at screening
  4. Subject agrees not to start any new treatment (medication or otherwise) during the treatment and follow-up periods.

6. Subject agrees to maintain a stable dose of any medication known to affect lower urinary tract function, including but not limited to anticholinergics, tricyclic antidepressants, beta-3 adrenergic agonist, or α-adrenergic blockers, throughout the treatment and follow-up periods.

For Females Only:

  • Subject agrees to discontinue use of bladder support devices, including but not limited to vaginal pessary, during the screening, treatment, and follow-up periods.
  • If of child-bearing age and female, agree to practice approved birth-control methods (oral , condom barrier, injection, diaphragm or cervical cap, vaginal contraceptive ring, IUD, implantable contraceptive, surgical sterilization (bilateral tubal ligation), vasectomized partner(s))

For Males Only:

- Subject must be ≥ 4 months post radical prostatectomy

Exclusion criteria

Exclusion Criteria:

  1. Pelvic floor physical therapy, including muscle training and/or electrostimulation, in a clinical setting within 30 days prior to screening
  2. Subject is morbidly obese (defined as 40 or greater)
  3. Pulmonary insufficiency, defined as difficulty breathing and fatigue, especially during exercise; chest pain, such as squeezing, pressure or tightness; the sensation of rapid or irregular heartbeat (palpitations); swelling of the legs or feet; dizziness or fainting; and/or bluish discoloration of the nails and/or lips (cyanosis)
  4. Any condition that causes a lack of normal skin sensation to the pelvis, buttocks, and lower extremities
  5. Implanted cardiac pacemaker or metal in the body, including, but not limited to drug pumps, neurostimulators, electronic implants, copper intrauterine devices (IUDs), and/or defibrillators
  6. Subject has a piercing between the waist and knees and is not willing to remove it before each treatment
  7. Active urethral diverticula
  8. Known vesicoureteral reflux
  9. Currently healing from surgical procedures where muscle contraction may disrupt the healing process
  10. Treatment with urethral bulking agents within the 6 months prior to the Screening Visit
  11. Subject is currently receiving treatment for a malignant tumor that would interfere with study participation.
  12. Subject has used the BTL EMSELLA device previously
  13. Subject has urinary incontinence of neurogenic etiology, such as multiple sclerosis, spina bifida, Parkinson's, spinal cord injury, diabetic neuropathy etc.
  14. Clinically confirmed urinary tract infection, requiring treatment as determined by the investigator, at the Screening Visit
  15. Currently participating in an study that may impact study results or previously received an investigational drug or treatment within 30 days of the Screening Visit
  16. Current or history of any physical condition that, in the investigator's opinion, might put the subject at risk or interfere with study results interpretation

    For Females Only:

  17. Pregnant, or planning to become pregnant, at screening or anytime throughout the study period
  18. History of surgery with insertion of vaginal mesh for SUI
  19. Vaginal prolapse beyond the introitus
  20. Vaginal rejuvenation treatment, including laser treatments and radiofrequency therapy, within the 6 months prior to the Screening Visit

    • Note for the sake of preserving scientific integrity, one or more of the eligibility criteria have been left off the list posted while the trial is ongoing. A full list of eligibility criteria will be posted upon completion of the trial.
Terms in these criteria, in plain language(5)

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.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

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.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
110 participants (estimated)

Study arms

  • Active comparator
    Emsella Chair Active Treatment

    Active treatment subjects will be asked to sit on the center of the Emsella chair. The height of the chair will be adjusted until the participant's feet are on the floor. The Emsella chair will be turned on and the setting gradually increased to the subject's sensory threshold; the maximum sensation the subject can tolerate. The setting will then be decreased slightly and stay unchanged for the remainder of the treatment time. The treatment threshold should be increased with every treatment until the subject reaches 100%.

    Device: BTL Emsella

  • Sham comparator
    Emsella Sham Treatment

    Sham subjects will be positioned on the device in the same manner as the active treatment group. The sham treatment will be provide some sensation without active HIFEM technology. The programming for the sham treatment will have an amplitude limitation, with the setting below therapeutic level (\<10% power).

    Device: Sham BTL Emsella

Interventions

  • DeviceBTL Emsella

    The Emsella Chair is a novel high-intensity focused electromagnetic (HIFEM) technology for the treatment of SUI, in addition to other pelvic floor related disorders. HIFEM technology induces deep pelvic floor muscle contractions designed to deliver the equivalent of 11,200 Kegel exercises over 28 minutes. The treatment paradigm consists of 3 different phases. The phases consist of an intense stimulation of the pelvic floor muscles (PFM), which consists of stimlulation and relaxation. The repetition of the phases and focused electromagnetic energy delivery leads to pelvic floor stimulation, adaptation, and remodelation.

  • DeviceSham BTL Emsella

    Sham subjects will be positioned on the device in the same manner as the active treatment group. The sham treatment will be provide some sensation without active HIFEM technology. The programming for the sham treatment will have an amplitude limitation, with the setting below therapeutic level (\<10% power).

06

What researchers measure

Primary outcomes

  1. The efficacy of the Emsella chair versus sham to treat stress urinary incontinence.

    The primary objective of this study is to compare the efficacy of Emsella Chair to sham by evaluating the the responder rate, where a patient is called a responder if there is ≥ 50% reduction from baseline in the number stress incontinence events.

    Time frame: 4 weeks after completing all treatments

Secondary outcomes

  1. The efficacy of the Emsella chair versus sham to treat stress urinary incontinence in relation to the change in total number of subject-reported stress urinary incontinence (SUI) episodes.

    Change in the total number of subject-reported stress incontinence (SUI) episodes over 3 days based on voiding diaries. Patients will be giving a 3-day void diary to complete.

    Time frame: 8 weeks after completing all treatments

  2. The efficacy of the Emsella chair versus sham to treat SUI in relation to the change in subject-reported impression of SUI severity.

    Change in subject-reported impression of SUI severity as measured by the Patient Global Impression of Severity scale (PGI-S). The subject will check the box that describes how their condition is now. The available options are normal, mild, moderate, or severe.

    Time frame: 8 weeks after completing all treatments

  3. The efficacy of the Emsella chair versus sham to treat stress urinary incontinence in relation to the change in subject-reported impression of SUI improvement as measured by the Patient Global Impression of Improvement scale (PGI-I).

    Change in subject-reported impression of SUI improvement as measured by the Patient Global Impression of Improvement scale (PGI-I). The subject will select one of the following options, (very much better, much better, a little better, no change, a little worse, much worse, very much worse) to describe their urinary tract symptoms now versus prior to study treatment.

    Time frame: 8 weeks after completing all treatments

  4. The efficacy of the Emsella chair versus sham to treat stress urinary incontinence related to the change in subject-reported urogenital distress.

    Change in subject-reported urogenital distress as measured by the Urinary Distress Inventory questionnaire (UDI-6). The UDI-6 is a six point questionnaire, each question answered is scored as follows; 0 = no, 1 = not at all, 2 = somewhat, 3 = moderately, 4 = quite a bit. Add all scores and divide by 6, then multiply by 25 to calculate the raw score. Higher scores = higher disability.

    Time frame: 8 weeks after completing all treatments

  5. The efficacy of the Emsella chair versus sham to treat stress urinary incontinence in relation to the change in subject-reported impact of SUI on daily life.

    Change in subject-reported impact of SUI on daily life as measured by the Incontinence Impact Questionnaire (IIQ-7) Short Form. The IIQ-7, assesses how their problem effects activities, relationships, and feelings. It is a 7 point questionnaire. Each answer is scored on the following scale 0 = not at all, 1 = slightly, 2 = moderately, 3 = greatly. The higher the score the more effected they are by their condition.

    Time frame: 8 weeks after completing all treatments

  6. The efficacy of the Emsella chair versus sham to treat stress urinary incontinence in relation to the change in subject-reported impact of urinary incontinence on daily life measured by the Incontinence Quality of Life questionnaire (I-QOL).

    Change in subject-reported impact of urinary incontinence on daily life as measured by the Incontinence Quality of Life questionnaire (I-QOL). The I-QOL is a quality of life measure specific to persons with urinary incontinence. The survey consists of 22 incontinent-specific quality of life items all having the following five-point ordinal response; 1 = extremely, 2 = quite a bit, 3 = moderately, 4 = a little, 5 = not at all. The summed total score is transformed to a 0-100 scale ranging from 0 (poor quality of life) to 100 (maximum quality of life).

    Time frame: 8 weeks after completing all treatments

  7. The efficacy of the Emsella chair versus sham to treat stress urinary incontinence and the change in fecal incontinence as measured by the Cleveland clinic incontinence score (Wexner).

    Change in subject-reported fecal incontinence as measured by the Cleveland clinic incontinence score (Wexner). The type of incontinence of stool (solid, liquid, gas, wears pad, lifestyle altered) are reported by the subject. Each question is measured as 0 = never, 1 = rarely, 2 = sometimes, 4 = usually, 5 = always. The higher the score the more severe the condition.

    Time frame: 8 weeks after completing all treatments

  8. The efficacy of the Emsella chair versus sham to treat stress urinary incontinence and the change in subject-reported sexual function as measured by Female Sexual Function Index questionnaire for female subjects.

    The change in subject-reported sexual function as measured by the Female Sexual Function Index questionnaire (FSFI) for female subjects. The FSFI is a 19 question survey. A lower the score is equivalent a higher degree of sexual function. Scores range from 0 to 95.

    Time frame: 8 weeks after completing all treatments

  9. The efficacy of the Emsella chair versus sham to treat stress urinary incontinence and the change in subject-reported sexual function as measured by the Brief Sexual Function Inventory questionnaire (BSFI) for male subjects.

    Change in subject-reported sexual function as measured by the Brief Sexual Function Inventory questionnaire (BSFI) for male subjects. The BSFI is a validated questionnaire for male sexual function. Scores range from 0 to 44. A lower score indicates a higher degree of dysfunction.

    Time frame: 8 weeks after completing all treatments

  10. The efficacy of the Emsella chair versus sham to treat stress urinary incontinence and change in reported pain and discomfort.

    Change in subject-reported pain and discomfort as measured by the Visual Analog Scale (VAS). The VAS is a validated questionnaire that assesses pain on a scale from 0 = no pain to 10 = Worst possible pain.

    Time frame: 8 weeks after completing all treatments

  11. Durability to determine whether subjects in the Emsella Chair group continue to have a higher responder rate than the Sham group

    The secondary object for durability for this study are to determine whether subjects in the Emsella Chair group continue to have a higher responder rate than the Sham group

    Time frame: 8 weeks after primary efficacy endpoint

  12. Safety objective to determine the safety and tolerability of Emsella Chair compared to sham

    Safety and tolerability of the Emsella chair compared to Sham will be assessed in relation the incidence of adverse events.

    Time frame: 4 weeks after primary efficacy endpoint

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Galloway NT, El-Galley RE, Sand PK, Appell RA, Russell HW, Carlan SJ. Extracorporeal magnetic innervation therapy for stress urinary incontinence. Urology. 1999 Jun;53(6):1108-11. doi: 10.1016/s0090-4295(99)00037-0. PubMed 10367836 ↗
  • HIFEM technology in treatment of urinary incontinence mechanism of action. https://www.avantemedicalcenter.com/images/documents/Emsella_study.pdf. Published November 2017. Accessed June 20, 2019.

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 9, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04133675
Lead sponsor
Corewell Health East
Responsible party
Kenneth M Peters, MD (Director and Chair of the Department of Urology, Corewell Health East) — Principal investigator
First posted
Oct 21, 2019
Start date
Dec 18, 2019
Primary completion
Oct 2028 (estimated)
Completion
Dec 2028 (estimated)
Last update
Jul 9, 2026

Study contacts

Katherine Kim, RN
Contact
Katherine.Kim@corewellhealth.org
248-551-0642
Jennifer Giordano, RN
Contact
Jennifer.Giordano@corewellhealth.org
248-551-3517
Kenneth Peters, MD
principal investigator · Corewell Health William Beaumont University Hospital

Oversight

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

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