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Design of an adjunctive stent to preserve renal perfusion

Clinical Problem: Current minimally invasive stentgrafts are unsuited to patients with suprarenal abdominal aortic aneurysms (AAA), as they prohibit renal perfusion. An adjunctive stent which can be deployed through the fenestrations of an AAA stentgraft will maintain its position in vivo and enable blood flow to the kidneys. This device should be designed with currently approved fenestrated AAA stentgrafts to enable a quick path to market.


  • Investigate current clinical practices and devices
  • Consider usability of design
  • Prototype ideas
  • Assess regulatory approval path

Timeline: 2017-08-27

Tags: stent suprarenal AAA stentgraft

Supporting info: Renal complications with AAA repair


Endovascular aneurysm repair (EVAR) has become an established technique for the treatment of many infrarenal aortic aneurysms. Although EVAR is obviously less invasive than open surgical repair, it is not free of complications. These can potentially result in severe morbidity or even mortality, stressing the need for an early detection and subsequent treatment. AAAs affect 1 in 6 men over the age of 60 years worldwide. Unfortunately, they are often asymptomatic prior to rupture which proves to be fatal in over 85% of cases. Risk factors include: smoking, hypertension, age, existing cardiovascular diseases.

Design of an adjunctive stent to preserve renal perfusion

Started by Bruce Murphy
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Robbie Gaul

Contact me for any further information.

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Alix Whelan

Hi Robert,

I have been doing some background reading related to this procedure, and I was wondering would it be possible to attend a surgery to better understand the associated intraoperative difficulties?


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Robbie Gaul

No problem at all. I have sent you a DM.