For years, chronic venous obstruction was treated with stents designed for arteries — an imperfect fit for a very different biomechanical environment. The development of dedicated venous stents recognized that veins are large-diameter, low-pressure, thin-walled vessels subject to external compression, and require purpose-built devices.
How venous stents differ from arterial stents
- Larger diameters match the caliber of the iliocaval veins.
- High crush resistance withstands external compression, such as an overlying artery.
- Flexibility with radial strength conforms to venous curves while maintaining lumen.
- Longer lengths cover extensive segments of obstruction.
Clinical applications
Venous stents treat non-thrombotic iliac vein lesions (including May-Thurner compression), post-thrombotic obstruction, and residual obstruction after treatment of acute iliofemoral DVT. They restore outflow and relieve the venous hypertension that drives swelling, pain, and ulceration.
Procedural considerations
Intravascular ultrasound is central to defining lesion severity and sizing the stent, and to confirming full expansion after deployment. Adequate inflow from the femoral confluence and complete coverage of the diseased segment are essential for durable patency. Extension into the inferior vena cava or across the inguinal ligament requires devices designed for those demands.
Outcomes
Reported patency and symptom relief are favorable when obstructive lesions are fully and accurately treated, supported by antithrombotic therapy and imaging follow-up. Dedicated venous designs have improved outcomes relative to the earlier use of arterial stents in the venous system.
INVAMED technologies in this space
INVAMED offers dedicated venous stents for the iliocaval segment; explore the venous stents category.
Device availability and approved indications vary by country. This content is prepared for healthcare professionals and does not replace clinical judgment or the instructions for use.