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New No-Needle permanent birth control could replace surgery

NCT ID NCT03433911

Disease control Sponsor: Femasys Inc. Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested a new method of permanent birth control called FemBloc, which is done in a doctor's office without surgery. It compared FemBloc to standard laparoscopic sterilization in 240 women aged 21-45 who wanted to stop having children. The goal was to see if FemBloc is as safe and effective as the surgical option.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

240 people

The number who actually took part.

Started

Feb 2018

Finished

Feb 2025

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

21 to 45 years

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Female, 21 - 45 years of age desiring permanent birth control * Sexually active with male partner * For FemBloc Arm: * Regular menstrual cycle for last 3 months or on hormonal contraceptives * For Control Arm: * Undergoing planned laparoscopic bilateral tubal sterilization Exclusion Criteria: * Uncertainty about the desire to end fertility * Known or suspected pregnancy * Prior tubal surgery, including sterilization attempt * Prior endometrial ablation * Presence, suspicion, or previous history of gynecologic malignancy * Abnormal uterine bleeding requiring evaluation or treatment * Scheduled to undergo concomitant intrauterine procedures at the time of procedure(s)

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contraception

Contacts and locations

Locations

  • Altus Research Inc.

    Lake Worth, Florida, 33461, United States

  • Amy Brenner MD & Associates

    Mason, Ohio, 45069, United States

  • Chattanooga Medical Research LLC

    Chattanooga, Tennessee, 37404, United States

  • Columbia University Medical Center

    New York, New York, 10032, United States

  • New Horizons Clinical Trials

    Chandler, Arizona, 85224, United States

  • Rosemark Womencare Specialists

    Idaho Falls, Idaho, 83404, United States

  • Rutgers, The State University of New Jersey

    Newark, New Jersey, 07103, United States

  • Stanford University

    Stanford, California, 94305, United States

  • University Hospitals Cleveland Medical Center

    Beachwood, Ohio, 44122, United States

  • University of Utah

    Salt Lake City, Utah, 84132, United States

  • Wake Research Associates, LLC

    Raleigh, North Carolina, 27612, United States

  • Women's Health Advantage

    Fort Wayne, Indiana, 46825, United States

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