New heart valve device offers hope for patients too sick for surgery
NCT ID NCT06683729
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study tests a new device called the HighLife TSMVR system for people with severe mitral regurgitation, a condition where the heart's mitral valve leaks. The device is placed through a catheter via a vein, avoiding open-heart surgery. The trial will include 240 participants who are not candidates for standard repair or surgery, and will track safety and effectiveness over 24 months.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- transcatheter mitral valve replacement device
- What this could lead to
- If successful, this could provide a new treatment option for people with severe mitral regurgitation who cannot have standard surgery or repair.
- What could go wrong
- This is an early study with 240 participants, and the device is new. Risks include complications from the procedure, device failure, or no benefit over existing options.
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
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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
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About 240 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Dec 2025
An estimate. Start dates often move.
- Expected to finish
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Jun 2034
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Based on local regulations, the subject meets the legal minimum age to provide informed consent * Moderate-to-severe or severe symptomatic MR (≥3+) by transthoracic echocardiography (TTE) which is primarily due to lack of mitral leaflet coaptation, secondary to either a) LV cardiomyopathy with restriction of the mitral leaflet(s), or b) mitral annular dilatation due to chronic atrial fibrillation or other cause, as confirmed by the echocardiographic core laboratory (note: some element of primary (degenerative) MR may be present, but the core lab must agree that the principal etiology is secondary MR) * New York Heart Association (NYHA) functional class II, III or ambulatory IV * Based on the assessment of the local multidisciplinary heart team, the patient is: 1. being treated with stable maximally-tolerated doses of guidelines class I indicated GDMT for at least one month, and CRT for at least 3 months (if applicable) 2. not indicated for heart surgery (mitral valve repair or replacement) according to guidelines and the local standard of care 3. unsuitable for treatment with transcatheter edge-to-edge repair (complex TEER anatomy) as assessed by the site interventional cardiologist(s) Exclusion Criteria: * Any stroke or TIA within 30 days prior to procedure; any prior intracranial hemorrhage at any time; or any intracerebral mass, arteriovenous fistula or other malformation or defect predisposing to bleeding * Known severe carotid stenosis (\>70% diameter stenosis by non-invasive imaging) or carotid stenting or carotid endarterectomy within 30 days) * History of bleeding diathesis, coagulopathy, clotting disorder, or refusal of future blood transfusion or bleeding in the 3 months prior to procedure other than minor cutaneous bleeding * Patients in whom transesophageal echo (TEE) is not feasible * Chronic obstructive pulmonary disease (COPD) requiring continuous home oxygen therapy or chronic outpatient oral steroid use. * Female subjects of childbearing potential who are not willing or able to comply with the use of contraception, or who are pregnant or lactating, or plan to get pregnant within the next 12 months. * Participation in another clinical study of an investigational drug or device at the time of inclusion that has not reached its primary endpoint * Patient has known allergies to the device components or contrast medium, which cannot be medically managed * Patient cannot tolerate anticoagulation (i.e. warfarin), or not willing to take anticoagulation for at least 6 months, or antiplatelet agents (i.e. aspirin, clopidogrel) * Patient with a life expectancy of less than 12 months, or otherwise is unable to comply with the follow-up schedule and assessments
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a tiny implant fix a leaky heart valve without open surgery?
- Can a new device fix leaky heart valves that are hard to treat?
- A tiny chest incision, a beating heart: can a new technique fix leaky valves without open surgery?
- Holograms may help doctors place heart devices with greater precision
- Can a heart procedure cut stroke risk after valve repair? new trial aims to find out