Fabric tube 50 is preferably made from {HEAD ~ a biocompatible material} such as {TAIL ~ polyester fabric} 
Fabric tube 50 is preferably made from { HEAD ~ a biocompatible material } such as { TAIL ~ polyester fabric }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL