However, any biocompatible material that can be readily compressed and that provides a moderate back force when somewhat compressed, such as elastomers including silicones and polyurethanes and fabrics including those made with {HEAD ~ polyterefluoroethylene} may be used to form {TAIL ~ fabric tube} 50 
used to form
However , any biocompatible material that can be readily compressed and that provides a moderate back force when somewhat compressed , such as elastomers including silicones and polyurethanes and fabrics including those made with { HEAD ~ polyterefluoroethylene } may be used to form { TAIL ~ fabric tube } 50
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH