The recall involves removing Pipeline Vantage 027 device models from use and sale and updating instructions for Pipeline vantage 021 models. Medtronic’s Pipeline Vantage embolization devices with Shield Technology treat bulges in the artery walls (aneurysms) of the brain. The endovascular devices go into blood vessels through a small catheter to the aneurysm location. There, a small, braided tube blocks off blood flow to the bulging area.