BlueWind RENOVA iStim™ System for the Treatment of OAB (OASIS)

August 27, 2025 updated by: BlueWind Medical

A Prospective Study to Assess the Efficacy and Safety of the BlueWind RENOVA iStim™ System in the Treatment of Patients Diagnosed With Overactive Bladder (OASIS - OverActive Bladder StImulation System Study)

The OASIS study is prospective, interventional, multi-center study to evaluate the safety and efficacy of the BlueWind RENOVA iStim™ implantable tibial neuromodulation System for the treatment of patients diagnosed with overactive bladder.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
282

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Belgium
      • Antwerp, Belgium, 2650
        • University Hospital Antwerp
      • Leuven, Belgium, 3000
        • UZ Leuven
  • Netherlands
      • Arnhem, Netherlands
        • Rijnstate Hospital
      • Maastricht, Netherlands
        • Academic Hospital Maastricht
      • Nijmegen, Netherlands
        • Radboud University Medical Center
      • Utrecht, Netherlands
        • UMC Utrecht
      • Zwolle, Netherlands, 8025 AB
        • Isala
  • United Kingdom
      • Birmingham, United Kingdom
        • Birmingham Women's and Children's NHS Foundation Trust
      • London, United Kingdom, W2 1NY
        • Imperial College, St. Mary's Hospital
  • United States
    • California
      • Orange, California, United States, 92868
        • University of California Irvine
      • San Diego, California, United States, 92110
        • Kaiser Permanente
    • Connecticut
      • Norwalk, Connecticut, United States, 06850
        • Norwalk Urology
    • Florida
      • Tampa, Florida, United States, 33615
        • Florida Urology Partners
    • Illinois
      • Lake Barrington, Illinois, United States, 60010
        • Comprehensive Urologic Care
    • Louisiana
      • Shreveport, Louisiana, United States, 71106
        • Regional Urology, LLC
    • Maryland
      • Hanover, Maryland, United States, 21076
        • Chesapeake Urology - Hanover
      • Owings Mills, Maryland, United States, 21117
        • Chesapeake Urology - Owing Mills
    • Minnesota
      • Woodbury, Minnesota, United States, 55125
        • Minnesota Urology
    • Nebraska
      • Omaha, Nebraska, United States, 68114
        • Adult Pediatric Urology & Urogynecology
    • North Carolina
      • Durham, North Carolina, United States, 27707
        • Duke Urogynecology
    • South Carolina
      • West Columbia, South Carolina, United States, 29169
        • Southern Urogynocology
    • South Dakota
      • Sioux Falls, South Dakota, United States, 57105
        • Sanford Health
    • Washington
      • Seattle, Washington, United States, 98195
        • University of Washington

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Female aged 18 or greater (21 in the US)
  • More than or equal to 6 months history of UUI diagnosis
  • Patient who is mentally competent with the ability to understand and comply with the requirements of the study

Exclusion Criteria:

  • Any significant medical condition that is likely to interfere with study procedures
  • Patients who are breastfeeding
  • Predominant stress incontinence
  • Have a life expectancy of less than 1 year
  • Diagnosis of interstitial cystitis or bladder pain syndrome as defined by either American Urological Association (AUA) or European Association of Urology (EAU) guidelines

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Treatment arm
RENOVA iStim™ System implanted patients
Device: RENOVA iStim™ System
Tibial implantable neuromodulation device

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
≥50% Decrease in Mean Urinary Urgency Incontinence (UUI) Episodes
Time Frame: 6 months
Proportion of responders at 6 months post system activation as demonstrated by ≥50% improvement in average number of urgency related incontinence episodes, measured by 7-day Patient Voiding Diary.
6 months
Safety - Number of Participants With Adverse Events
Time Frame: 12 months
The primary safety endpoint was to assess adverse events from implantation to 12-months post-activation (Treatment Emergent Adverse Events).
12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
BlueWind Medical

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: John Heesakkers, MD, Maastricht University Medical Centre

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 12, 2019

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 28, 2022

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 24, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 1, 2018

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 12, 2018

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 24, 2018

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 16, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 27, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • G02-CLP-0002

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings