New study pits two Vein-Closing techniques against each other
NCT ID NCT07561320
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two treatments for varicose veins: foam sclerotherapy (injecting a foam to close the vein) and mechanochemical ablation (using a device and medication). Both are done with local anesthesia and allow quick recovery. 50 patients will be randomly assigned to one treatment and followed to see which keeps veins closed longer and improves quality of life more.
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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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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About 50 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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May 2026
An estimate. Start dates often move.
- Expected to finish
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Nov 2027
An estimate. End dates often move.
- Lead sponsor
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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.
- 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: * CEAP Classification C2, 3 or 4 * Insufficient great saphenous vein measuring 6-12 mm in the mid-thigh on Doppler ultrasound. Exclusion Criteria: * Allergy to sclerosing substances * Deep venous thrombosis, stroke, or pulmonary embolism * Local or generalized infection at the sclerotherapy site * Prolonged immobilization * Asymptomatic patent foramen ovale * Pregnancy Occlusive peripheral arterial disease
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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 places running it
1 site. The list below names each one and where it is.
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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.
Contacts and locations
Locations
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Hospital da Clínicas da FMUSP
RECRUITINGSão Paulo, São Paulo, Brazil
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a Lab-Grown vein with a Built-In valve fix damaged leg veins?
- Could leg vein disease weaken breathing and strength?
- Blood thinners after vein laser: which works best to stop dangerous clots?
- Mapping pain during vein surgery to make it less uncomfortable
- Scientists track varicose veins from start to worse
- 10,000 people enrolled to uncover how vein disease silently progresses