The tubular braid is anchored by axial shortening of the mesh and remains in {HEAD ~ place} to permit {TAIL ~ subsequent exchange} of dilation members to provide for different diameter access lumens 
to permit
The tubular braid is anchored by axial shortening of the mesh and remains in { HEAD ~ place } to permit { TAIL ~ subsequent exchange } of dilation members to provide for different diameter access lumens
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH