Upon {HEAD ~ expulsion} from {TAIL ~ the catheter}, the wire frame structure resiliently or pseudoelastically expands into a flow through rivet comprising a tube with expanded heads at either end 
from
Upon { HEAD ~ expulsion } from { TAIL ~ the catheter } , the wire frame structure resiliently or pseudoelastically expands into a flow through rivet comprising a tube with expanded heads at either end
OTH HEAD HEAD HEAD HEAD HEAD 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 OTH OTH