Abstract: An intra-aortic catheter apparatus for kidney perfusion and preservation has a catheter with a tube having an intermediate part which forms a permeable zone located so that in an inserted condition of the catheter the permeable zone is exactly located at a renal parahiliar area, a distal balloon located at a distal caudal part of the tube and formed so as to obstruct circulation in an aorta when being inflated, a proximal balloon located at an end of the tube which is insertable over renal arteries and having such a diameter that upon inflation it also fully obstructs aortic circulation, the balloons being located at opposite sides the of the permeable zone, a first opening provided in the tube and communicating with the permeable zone, a second opening provided in the tube so as to end in the renal parahiliar area, a distal opening communicating with the distal balloon for inflating the latter, and a proximal opening communicating with the proximal balloon for inflating the latter, and a monitoring equipment