Tiny heart device tested in MRI study for common type of heart failure
NCT ID NCT07093528
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study uses a special heart MRI to see if a device called a coronary sinus reducer can improve blood flow in patients with heart failure with preserved ejection fraction (HFpEF) and coronary microvascular dysfunction (small vessel disease). The device is implanted to reroute blood flow in the heart. Researchers will measure changes in blood flow to the inner layer of the heart muscle. The study enrolls 25 adults who are already in a larger trial of the device.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Coronary sinus reducer (a device implanted to improve blood flow in the heart)
What this could lead to
If successful, this could show that the coronary sinus reducer improves blood flow to the heart muscle in patients with heart failure and small vessel disease.
What could go wrong
This is a very small, early substudy (25 people) that only measures changes on MRI. It may not prove any real-world benefit or safety.
Disclaimer
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This is a summary of
the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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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.
Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Mayo Clinic
RECRUITINGRochester, Minnesota, 55905, United States
Contact
Contact Phone: •••-•••-•••• Email: •••••@•••••