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Shock waves vs balloons: which best reopens clogged heart stents?

NCT ID NCT07316504

Recruiting now Disease control Sponsor: University Hospital, Clermont-Ferrand Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests two methods to fix a common problem: a heart stent that hasn't opened fully (underexpansion). One method uses a balloon to push the stent open, the other uses shock waves (lithotripsy) to crack the blockage. About 80 people with narrowed stents will be randomly assigned to one of the two treatments. The goal is to see which approach restores better blood flow.

What this could mean

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

Active substance
Intravascular lithotripsy (shock waves) or high-pressure balloons
What this could lead to
If it works, this could establish a better way to open up narrowed stents in heart arteries, reducing the need for repeat procedures.
What could go wrong
This is a small, early-stage trial with only 80 people. The procedure itself carries risks like vessel injury or heart attack, and the results may not apply to all patients.

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

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Conditions

The condition(s) this trial relates to.

coronary artery disorder coronary restenosis

As listed by the trial registrant

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

ANGIOPLASTY, TRANSLUMINAL, PERCUTANEOUS CORONARY CORONARY ANGIOPLASTY CORONARY ARTERY DISEASE CORONARY ARTERY DISEASE (CAD) CORONARY STENT RESTENOSIS INTRAVASCULAR LITHOTRIPSY INTRAVASCULAR LITHOTRIPSY; ROTATIONAL ATHERECTOMY; OFDI LITHOTRIPSY OCT ANGIOGRAPHY OPTICAL COHERENCE TOMOGRAPHY (OCT) PERCUTANEOUS CORONARY INTERVENTION (PCI) RESTENOSIS RESTENOSIS OF CORONARY ARTERY STENT

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • CHU de Clermont-Ferrand

    NOT_YET_RECRUITING

    Clermont-Ferrand, 63000, France

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Clermont Ferrand Hospital

    RECRUITING

    Clermont-Ferrand, Auvergne, 63000, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••

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