An EVAR abdominal endograft is a stent graft device placed inside the aorta to treat an abdominal aortic aneurysm using a minimally invasive, catheter-based approach. If a physician has discussed endovascular aortic aneurysm repair (EVAR) as an option, understanding what the endograft device is and how it is designed to work can help patients feel more prepared for the conversation. This article introduces the basics for a patient audience.
What Is an Abdominal Endograft?
An abdominal endograft is a covered stent system, generally constructed with a metal scaffold (commonly nitinol) and a fabric-like graft covering. It is designed to be placed inside the infrarenal abdominal aorta — the segment below the kidney arteries — to create a new, sealed pathway for blood flow that bypasses the weakened, bulging aneurysm sac.
Many abdominal endografts used in EVAR are bifurcated, meaning they are shaped to match the natural branching of the aorta into the two iliac arteries that supply the legs, per how INVAMED's aortic category describes EVAR devices.
How Is the Endograft Designed to Work?
Once positioned inside the aorta, the endograft is designed to:
- Create a durable, sealed conduit for blood flow, redirecting it away from the aneurysm sac
- Reduce the pressure exerted on the weakened aortic wall by the aneurysm
- Maintain long-term vessel patency to support normal blood flow to the legs and pelvis
The device is delivered in a compressed form through a catheter inserted via the femoral arteries in the groin, then expanded into place at the treatment site under X-ray guidance. This approach avoids the large abdominal incision required for open surgical repair.
What Should Patients Expect With an Abdominal Endograft?
Because EVAR is minimally invasive, many patients experience a shorter hospital stay and recovery period compared with open surgical repair, although individual experiences vary based on overall health and aneurysm complexity. As with any implanted device, an abdominal endograft requires ongoing surveillance imaging after placement to confirm it remains properly positioned and sealed, and to check for a condition called endoleak, where blood may continue to flow into the aneurysm sac.
All procedures carry risks, and whether an abdominal endograft and EVAR are appropriate for a specific patient depends on aneurysm size, shape, and overall anatomy, as evaluated by the treating physician.
Why Might a Physician Recommend an Endograft Over Open Surgery?
Physicians consider several factors when discussing repair options, including aneurysm anatomy, the patient's surgical risk profile, and overall health status. Endovascular repair with an abdominal endograft is often considered less invasive than open surgery and may be associated with a shorter initial recovery period, but it is not appropriate for every anatomy or every patient. The treating physician makes this determination based on individualized evaluation and imaging.
Frequently Asked Questions
Is an abdominal endograft permanent?
Yes, an abdominal endograft is intended to remain in place long-term as a permanent implant. It requires ongoing follow-up imaging to confirm it continues to function as intended over time.
What is a bifurcated endograft?
A bifurcated endograft is shaped like the natural branching point of the aorta into the two iliac arteries, allowing the device to extend from the aorta into each iliac artery to maintain blood flow to both legs.
Will I need more surgery after getting an abdominal endograft?
Not necessarily. Most patients undergo routine surveillance imaging rather than additional procedures. However, if a follow-up scan identifies an issue such as an endoleak or growth of the aneurysm sac, a physician may discuss whether additional treatment is appropriate.
Related INVAMED Resources
- Aortic Aneurysm & Dissection Repair — learn about INVAMED's abdominal and thoracic stent graft technologies.
- Request Information — contact INVAMED for more information.
Medical Disclaimer: This article is provided for general informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendation. It is not a substitute for consultation with a qualified healthcare professional. Product indications, availability, and regulatory status vary by country. Always refer to the official Instructions for Use (IFU) and consult a licensed physician for guidance specific to your situation. INVAMED devices are intended for use by trained healthcare professionals.