Four holes 130 are circumferentially spaced about the flange 128 at equal angular intervals for receiving staples, sutures or other suitable fasteners to secure {HEAD ~ the flange} 128 to {TAIL ~ the external surface} of the body wall 
to
Four holes 130 are circumferentially spaced about the flange 128 at equal angular intervals for receiving staples , sutures or other suitable fasteners to secure { HEAD ~ the flange } 128 to { TAIL ~ the external surface } of the body wall
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH