A medical device which can be implanted at a target site in a living body. The
device includes an inner flange formed by radial expansion of the device and an
outer flange formed by axial compression of the device. The device can include
an implant portion and a discard portion which separate from each other during
formation of the outer flange. The separation can occur by fracturing a frangible
linkage or by mechanically separating a portion of the outer flange from a deployment
tool. The device can be a one piece anastomosis device for connecting a graft vessel
to a target vessel without the use of conventional sutures. The inner and outer
flanges capture the edges of an opening in a target vessel and secure the graft
vessel to the opening in the target vessel. The device greatly increases the speed
with which anastomosis can be performed over known suturing methods.