One embodiment is directed to a system for closing a wound created at least partially across a tissue structure wall, comprising: a helical needle a suture member coupled to the helical needle and configured to be pulled along a helical pattern with helical movement of the helical needle an outer delivery member rotatably coupled to the helical needle a drive shaft axially movably coupled to the outer delivery member and a plurality of suture guide struts projecting distally from the outer delivery member wherein upon helical insertion of the helical needle relative to the outer delivery member, the helical needle is advanced such that it becomes disposed around the guide struts, such that the guide struts prevent radial migration of the suture as it is helically wound into the tissue structure.
