with a wall 25 that is made of a material that is permeable to blood but impermeable to emboli the wall 25 can be made of a mesh material a woven material a thin polymer or any material that is permeable to blood but impermeable to emboli including material that is biodegradable furthermore as depicted in the aortic diverter 10 of fig3 the wall 25 of the hollow tube 20 can be impermeable to blood but have openings 70 that are covered with material 80 that is permeable to blood yet impermeable to emboli when placed in the aorta blood flows from the heart into the aorta and must enter the proximal end 30 of the hollow tube 20 flow through the hollow tube 20 and exit either through the distal end 40 of the hollow tube 20 or laterally through the blood permeable wall 25 of fig2 or the openings 70 of fig3 since the wall 25 of fig2 and the openings 70 of fig3 are impermeable to emboli emboli are washed downstream with the current of blood that takes the emboli to the peripheral vasculature the distal end of the aortic diverter 10 may also be adapted to completely fill the lumen of the aorta such that there is no backflow of blood to.