While the doctor is the primary resource for diagnosis and care, this page will give more information about the condition and the treatment options. Here’s what can expect before, during, and after aneurysm flow diversion treatment with the flow diverter.


First, the doctor will perform a series of exams and diagnostic procedures to fully assess the size, shape, and location of the brain aneurysm. Exams and procedures generally include diagnostic imaging, medical history review, physical examination, and blood tests.*

The doctor will also prescribe some medications before the procedure. These will include but are not limited to:

  • Taking dual antiplatelet and/or anticoagulation therapy such as aspirin and clopidogrel
  • Possible additional medications depending on your general health and other medications you may be taking


The procedure may be done under local or general anesthesia. It is important to remain still for long periods of time, so general anesthesia is usually preferred. However, the doctor will determine the best and safest method for the procedure.

The flow diversion device procedure consists of accessing the aneurysm via an artery in your groin using access devices such as guidewires, micro catheters to deliver the flow diverter.

During the procedure, the flow diverter device is implanted across the aneurysm neck, which can divert blood flow and may allow the diseased vessel to heal. Before treatment, blood flows freely into the aneurysm. Immediately after treatment with flow diverter, blood flow into the aneurysm slows. Over time, blood may no longer flow into the aneurysm. As the body’s natural healing process works with the flow diverter implant, the aneurysm may shrink. 1,2,3

After placing the implant, the physician will remove the access devices and close the access site. The physician will use multi-dimensional neurologic imaging to ensure the device is properly placed.


After the brain aneurysm treatment is complete, it’s time to rest in a recovery room. It’s not uncommon to experience some pain and tenderness in the groin area where the micro catheter was inserted into your artery for treatment access.

For a full list of symptoms that may occur post procedure, please consult a doctor or the safety and warnings page. The doctor will prescribe medications after the procedure and provide specific instructions for recovery.


It is important to discuss with your physicians the risks and warnings associated with these techniques.


Pipeline™ Flex Embolization Device IFU


Szikora I, Marosfoi M, Salomváry B, Berentei Z, Gubucz I. Resolution of mass effect and compression symptoms following endoluminal flow diversion for the treatment of intracranial aneurysms. AJNR Am J Neuroradiol 2013;34:935-9.


Internal Report TR-NV11534/TR-NV11121. Rev. A