The present invention provides a
system and method for forming a
side branch on a hollow vessel, such as the
aorta. The
side branch is preferably adapted to be connected to a connector conduit, but any other suitable use is also acceptable. The
system comprises a graft including a
side branch portion, and an applicator comprising a hole forming element adapted to form a hole in the wall of the vessel and an
insertion element adapted to be inserted through the wall of the vessel, the
insertion element comprising a retraction element adapted to enter into engagement with the graft. The hole forming element may comprise a
cutting element adapted to
cut a hole in the wall of the vessel, and a positioning element adapted to hold the position of the applicator relative to the vessel. The
system further comprises a graft protection element adapted to prevent the graft from being damaged by the
cutting element. In this case, the clamping element and the graft protection element may be the same element, for example, an expansion element, which may be expandable from an unexpanded state to fully expanded state and to a partially expanded state. The expansion element may be a
balloon, which may be in the shape of a circular toroid, and may include a
tension member that restricts the dimensions of the
balloon. In addition, the expansion element may be an umbrella mechanism.