A device for forming an end-to-side anastomosis of blood vessels or ducts
includes a first engagement structure (7) for engaging an end portion (2)
of a blood vessel or of a prosthesis, a second engagement structure (35)
for stably engaging a side portion (4) of the blood vessel or prosthesis,
and a mechanism (10, 14) for reciprocally connecting the first and second
engagement structures (7, 35). The second engagement structure (35)
includes one or more piercing elements (9) adapted to only partially
penetrate the side wall (4) of the blood vessel or prosthesis so as to
avoid direct contact between the elements (9) and the blood inside the
vessel or prosthesis.
