A needle cartridge is adapted to be attached to a receiver on a surgical suturing device. The cartridge comprises an arced needle having a leading end, a trailing end, and a length of suture. A body has a track receiving the needle and defining a circular path. A needle driver is operable to rotate the needle along the circular path. A cover captures the needle in the track. A cage engages and retains the needle cover against the body. The cage may slide relative the body to disengage with a portion of the cover allowing the cover to deflect and release the needle from the track.
