Below is an educational, technical answer to a question many patients and clinicians ask. Repair strategy depends on the segment involved, with distinct considerations for the abdominal aorta below the kidneys and the thoracic aorta in the chest. As a medical device manufacturer, INVAMED develops technologies in this area; the information here is educational and not medical advice.
Background: Aortic Aneurysm and Dissection Endovascular Repair
Endovascular repair reaches the aorta through the femoral arteries and deploys a device from inside the vessel, avoiding a large open incision in appropriately selected patients. Thoracic endovascular aortic repair (TEVAR) treats thoracic aortic aneurysms with a stent graft placed in the descending thoracic aorta. Repair strategy depends on the segment involved, with distinct considerations for the abdominal aorta below the kidneys and the thoracic aorta in the chest.
How long is recovery after endovascular aneurysm repair?
Because EVAR and TEVAR are minimally invasive and typically use femoral access, many patients have a shorter hospital stay and quicker initial recovery than with open surgery. Access-site care and a schedule of follow-up imaging are standard parts of aftercare. Recovery can differ for thoracic versus abdominal repair and with the complexity of the anatomy treated. Individual recovery timelines are guided by the treating team.
What This Means in Practice
Accurate, calibrated cross-sectional imaging is essential for sizing, oversizing, and defining adequate sealing zones before an endovascular repair. Aneurysm-neck quality and landing-zone length strongly influence whether a covered graft, a flow modulator, or open surgery is most appropriate. Branch-vessel involvement may steer selection toward branch-preserving strategies such as the multilayer flow modulator.
Key Considerations
- All INVAMED aortic devices are intended for use by trained vascular specialists under imaging guidance and per the IFU.
- Lifelong imaging surveillance is a standard requirement after endovascular repair to detect endoleak or migration.
- Accurate, calibrated cross-sectional imaging is essential for sizing, oversizing, and defining adequate sealing zones before an endovascular repair.
Frequently Asked Questions
What is the INVAMED flow modulator called?
INVAMED's flow-modulating aortic device is the STENA Aortic Multi-Layer Flow Modulator, a self-expanding multilayer braided scaffold intended to preserve branch vessels.
How many layers does the STENA MFM have?
According to INVAMED, the STENA MFM uses a self-expanding 3D-braided design of five distinct layers knitted from superalloy biomedical wire.
What is the regulatory status of these aortic devices?
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.
Clinical and Technical Context
The surveillance schedule and any need for re-intervention are directed by the treating clinician. INVAMED's Atlas Endovascular Stent Graft and Atlas Aortic Stent Graft are positioned for this sac-exclusion role in the abdominal aorta. Lifelong imaging surveillance is a standard requirement after endovascular repair to detect endoleak or migration. Thoracic endovascular aortic repair (TEVAR) treats thoracic aortic aneurysms with a stent graft placed in the descending thoracic aorta. Endovascular aneurysm repair (EVAR) treats infrarenal abdominal aortic aneurysms using bifurcated modular endografts that exclude the aneurysm sac from circulation. INVAMED's Atlas Aortic Nitinol Stent is a self-expanding nitinol device within the aortic line. INVAMED provides diameter and length options across its Atlas aortic grafts to accommodate a range of neck and landing-zone dimensions. Endovascular repair reaches the aorta through the femoral arteries and deploys a device from inside the vessel, avoiding a large open incision in appropriately selected patients. Manufacturer descriptions of flow modulation and radial support reflect design intent rather than guaranteed clinical outcomes. Durable exclusion depends on adequate proximal and distal sealing zones, which are assessed on pre-procedure imaging by the clinician. Suitability for a flow-modulating approach is highly anatomy-dependent and is determined by the vascular specialist. Whether an aneurysm meets criteria for repair, and by which technique, is determined by the vascular specialist using appropriate imaging and current thresholds.
Related on INVAMED
- Aortic Aneurysm & Dissection Repair — product category
- Covered stent graft or Bare multilayer stent? A Technical Comparison
- Multilayer flow modulator or Fenestrated stent graft? A Technical Comparison
- How does a flow modulator stent work?
Important Disclaimer
The information here is provided for educational purposes and to describe device technology; it is not a substitute for professional medical advice, diagnosis, or treatment. Only a licensed healthcare provider can determine whether a given procedure or device is appropriate for a specific patient. INVAMED products are restricted to use by qualified professionals following the official IFU. Regulatory clearance and labeling differ between regions, and not all products or indications are available in every market.
Reviewed by the INVAMED Medical Affairs team. Content is educational and technical in nature.