an outflow device, which is arranged to drain the irrigation liquid from {HEAD ~ the body cavity} through {TAIL ~ a tubing}, 
through
an outflow device , which is arranged to drain the irrigation liquid from { HEAD ~ the body cavity } through { TAIL ~ a tubing } ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH