New stent aims to unclog dialysis veins

NCT ID NCT04261686

Completed Disease control Sponsor: C. R. Bard Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested a special mesh tube called a stent graft in 100 people on dialysis whose arm veins (fistulas) had narrowed. The stent is placed to prop the vein open and improve blood flow. Researchers tracked how long the vein stayed open without needing another procedure, and checked for any safety issues within 30 days.

What this could mean

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

Active substance: Covera Vascular Covered Stent (a mesh tube placed in the vein to keep it open)
What this could lead to: If it works, this stent could help people on dialysis maintain their access longer with fewer blockages and repeat procedures.
What could go wrong: This is a post-market study with no comparison group, so results may not prove the stent is better than other options. Risks include device-related complications like clotting or infection.

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.

congenital arteriovenous fistula

As listed by the trial registrant

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

ARTERIOVENOUS FISTULA

Contacts and locations

Locations

Arizona Kidney Disease and Hypertension Center Medical Research Services

Phoenix, Arizona, 85012, United States
Chicago Access Care

Westmont, Illinois, 60559, United States
Dallas Renal Group

Dallas, Texas, 75208, United States
Kidney Care & Transplant Services of New England

West Springfield, Massachusetts, 01089, United States
Michigan Vascular Center

Flint, Michigan, 48507, United States
Minnesota Vascular and Surgery Center

New Brighton, Minnesota, 55112, United States
North Carolina Nephrology

Raleigh, North Carolina, 27610, United States
Providence Access Care

Providence, Rhode Island, 02906, United States
San Antonio Kidney and Disease Access Center

San Antonio, Texas, 78216, United States
University of Minnesota Medical Center

Minneapolis, Minnesota, 55455, United States
Yale University

New Haven, Connecticut, 06511, United States

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