Patent ID: 7083594

Claim:
Catheter in particular for endovascular applications, comprising a long and flexible, hollow, tubular body having an insertion end and a connection end intended to remain outside the body, and at the insertion end, at least two elements which are expandable/contractible by means of external operation and which are located on said tubular body at a fixed distance from each other such as to be able to operate one upstream and the other downstream of a given section of a vessel, said expandable/contractible elements being adapted and/or being able to be adapted, with regard to their diameters in the expanded condition, to the diameters of the vessels inside which they are intended to be positioned, so as to block temporarily the circulation inside said vessel section, the two elements located at the insertion end being inflatable/deflatable by means of supplying and discharge ducts which are provided inside the thickness a wall of the the catheter, wherein said expandable/contractible elements have different diameters in the expanded condition and further comprising a central duct for conveying treatment means necessary for operating in the vessel section affected by stenosis, said central duct having an opening at a distal end thereof, said opening being defined between said expandable/contractible elements, wherein the tubular body includes a main body having a first, larger diameter, provided on the outside with a first one of said elements which is inflatable/deflatable by means of one of the ducts provided in the thickness of the wall, and wherein at least one other of the ducts inside the thickness of the wall extends, after a certain length, into an extension portion of the tubular body having a second, smaller diameter and provided on the outside with a second one of said elements.