Abstract: A catheter for medical applications, suitable for being inserted into a duct comprising a first vessel and a second vessel which branches off from the first vessel. The catheter comprises a catheter body which extends from a proximal end to a distal end, a main cavity, which connects the proximal end to the distal end, and at least one opening, disposed at the distal end and suitable for perfusing a substance from the main cavity to the second vessel. The catheter, at the distal end, comprises first and second occluding means suitable for at least partially occluding the distal end so as to infuse the second vessel indirectly, creating a preferred flow of substance from the at least one opening to the second vessel.