ClinicalTrials.gg
CompletedNCT03784170EVANESCE-OABUpdated Feb 6, 2026

FemPulse Therapy for Overactive Bladder in Women

An interventional study of FemPulse System in Urinary Bladder, Overactive, sponsored by FemPulse Corporation. Completed at 3 sites in United States. Open to female participants aged 21 Years and older. Per ClinicalTrials.gov, last updated 2026-02-06.

Sponsored by FemPulse Corporation · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Dec 2019, 6 years 10 months ago, and no results have been posted to the registry.
Phase
Not applicable
Study type
Interventional
Enrollment
21
Allocation
Randomized
Ages
21 Years and older
Sex
Female
01

Study summary

The purpose of this clinical trial is to investigate a new medical device treatment for Overactive Bladder (OAB) in women.

Read the detailed description

The FemPulse System is a vaginal ring intended to provide mild electrical stimulation to nerves that regulate bladder function. It is believed that stimulation of these nerves may help relieve the symptoms of OAB.

02

Conditions studied

  • Urinary Bladder, Overactive

Keywords

  • Overactive Bladder
  • OAB
  • Women
  • Neuromodulation
  • Bioelectronic Medicine
03

In context

Urinary Bladder, Overactive

858 studies on the registry are indexed under Urinary Bladder, Overactive; 127 are open to participants now.

This study's enrollment of 21 is below the median of 70 across 649 interventional studies indexed under Urinary Bladder, Overactive.

Browse Urinary Bladder, Overactive studies →

Lead sponsor

FemPulse Corporation is the lead sponsor of 6 studies on the registry; 1 is open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

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

04

Who can participate

Ages eligible
21 Years and older
Sexes eligible
Female
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

  • Females 21 years or older with a diagnosis of Overactive Bladder
  • If of reproductive age, must use a reliable form of

Exclusion criteria

Exclusion Criteria:

  • Pregnant, was recently pregnant or is trying to conceive
  • Has a metal pelvic implant or any electrically active implanted medical device
  • Had a previous hysterectomy, pelvic radiation or pelvic cancer
  • Has significant pelvic organ prolapse
  • Had bladder treatment with onabotulinumtoxinA in the previous 12 months
  • Has a significant heart condition
Terms in these criteria, in plain language(1)

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.

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.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
21 participants (actual)

Study arms

  • Experimental
    Treatment

    FemPulse System at one device setting

    Device: FemPulse System

  • Sham comparator
    Control

    FemPulse System at a different device setting

    Device: FemPulse System

Interventions

  • DeviceFemPulse System

    Device therapy with the FemPulse System

06

What researchers measure

Primary outcomes

  1. All device- and procedure-related adverse events will be collected and tabulated

    Adverse events

    Time frame: Approximately 11 days in total

  2. Urinary frequency

    Frequency of and intervals between urinary voids (voids per day and time between voids)

    Time frame: Approximately 11 days in total

  3. Urinary urgency

    Presence or absence of urgency with each void

    Time frame: Approximately 11 days in total

  4. Urge urinary incontinence (UUI)

    Presence or absence of UUI with each void

    Time frame: Approximately 11 days in total

  5. OAB-q - Short Form

    OAB bother quality of life questionnaire

    Time frame: Approximately 11 days in total

  6. OAB Symptom Score

    OAB symptoms quality of life questionnaire

    Time frame: Approximately 11 days in total

  7. Urogenital Distress Inventory - Short Form

    OAB-related distress quality of life questionnaire

    Time frame: Approximately 11 days in total

  8. Incontinence Impact Questionnaire - Short Form

    Impact of OAB quality of life questionnaire

    Time frame: Approximately 11 days in total

07

Study locations

3 sites
  • Minnesota Urology
    Woodbury, Minnesota 55125, United States
  • McKay Urology
    Charlotte, North Carolina 28207, United States
  • University of Washington Medical Center
    Seattle, Washington 98195, United States
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

Ran from Dec 2018 to primary completion in Dec 2019, 12 months.

Of 41 industry-sponsored interventional studies with no phase under Urinary Bladder, Overactive, half reached primary completion within 13 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 25. This study's 12 months is close to that.

Counting every sponsor, half of 174 studies reached it within 19 months; a quarter within 10 and three quarters within 40.

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

Registered
Dec 14, 2018
First posted
Dec 21, 2018
StartActual
Dec 11, 2018
Primary completionActual
Dec 31, 2019
CompletionActual
Dec 31, 2019
Last update
Feb 6, 2026
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 Feb 6, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03784170
Lead sponsor
FemPulse Corporation
Responsible party
Sponsor
First posted
Dec 21, 2018
Start date
Dec 11, 2018
Primary completion
Dec 31, 2019
Completion
Dec 31, 2019
Last update
Feb 6, 2026

Oversight

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

Not currently enrolling

This study is completed, as verified in Feb 2020. You cannot join it, but the record below documents what was studied.

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