Endovascular prosthesis

A method for endovascular blocking of an aneurysmal opening in a patient, the method comprising the steps of:

• inserting a catheter within a body passageway of the patient by catheterization of the body passageway, the catheter comprising a balloon portion at a distal portion thereof and a prosthesis mounted on the balloon portion, the prosthesis comprising:
• a body having a promixal end, a distal end and at least one expandable portion disposed therebetween, and a leaf portion attached to the body;
• translating the catheter to a target body passageway at which the aneurysm opening is located;
• orienting the catheter such that the leaf portion of the prosthesis is in substantial alignment with the aneurysmal opening;
• inflating the balloon portion of the catheter to confer a radially outward expansive force to the at least one expandable portion such that the at least one expandable portion is urged against the target body passageway;
• urging the leaf portion against the aneurysmal opening thereby blocking the aneurysmal opening, wherein said urging step comprising urging the balloon portion of the catheter against the leaf portion of the prosthesis.

A method for endovascular blocking off an aneurysmal opening in a patient, the method comprising the steps of:

• inserting a catheter within a body passageway of the patient by catheterization of the body passageway, the catheter comprising a balloon portion at a distal portion thereof and a prosthesis mounted on the balloon portion, the prosthesis comprising:
• a body having a promixal end, a distal end and at least one expandable portion disposed therebetween, and a leaf portion attached to the body, wherein the leaf portion comprises a porous structure having a covering material disposed thereon;
• translating the catheter to a target body passageway at which the aneurysm opening is located;
• orienting the catheter such that the leaf portion of the prosthesis is in substantial alignment with the aneurysmal opening;
• inflating the balloon portion of the catheter to confer a radially outward expansive force to the at least one expandable portion such that the at least one expandable portion is urged against the target body passageway;
• urging the leaf portion against the aneurysmal opening thereby blocking the aneurysmal opening.