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Robot Knot-Tier tested in heart surgery

NCT ID NCT03681834

Knowledge-focused Sponsor: Centre Hospitalier Universitaire Dijon 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study collected information from multiple hospitals on the Cor-Knot® device, which automatically ties knots during heart valve surgery. The goal was to see how safe and effective it is. Over 550 adults having planned valve surgery took part. The main focus was on whether leaks developed around the new valve.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Cor-Knot® automated knotting device
What this could lead to
If the data show the device is safe and effective, it could support wider use to shorten surgery times.
What could go wrong
This is an observational data collection, not a controlled trial, so it cannot prove the device is better than standard methods. Results may not apply to all patients.

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.

Participants

557 people

The number who actually took part.

Started

Jul 2018

Finished

Mar 2021

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

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

Who is studied

Patients requiring valve surgery

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * programmed minimally invasive surgery for: * aortic valve replacement * mitral valve replacement * mitral valve plastic surgery * adult patient Exclusion Criteria: * emergency surgery

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Conditions

The condition(s) this trial relates to.

aortic valve disorder mitral valve disorder

As listed by the trial registrant

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

Vascular surgery

Contacts and locations

Locations

  • Chu Dijon Bourogne

    Dijon, 21000, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.