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