A surgical suturing apparatus includes a suture housing, a needle mounted
within the suture housing for movement about an arcuate path, a drive
assembly operably associated with the needle for controlling movement of
the needle with a suture secured thereto about an arcuate path in a first
direction in a manner facilitating application of the suture to tissue,
and an anti-backup mechanism associated with the needle for preventing
movement of the needle in a second direction opposite to the first
direction.