In the illustrated embodiment, this lower retaining portion or hole 15 forms a disinfector chamber in which, when the instruments 6 and the supply hoses 16 are retracted and when the grips 7 are folded in, {HEAD ~ these parts} are subjected to an automatic cleaning and {TAIL ~ disinfection} 
are subjected to
In the illustrated embodiment , this lower retaining portion or hole 15 forms a disinfector chamber in which , when the instruments 6 and the supply hoses 16 are retracted and when the grips 7 are folded in , { HEAD ~ these parts } are subjected to an automatic cleaning and { TAIL ~ disinfection }
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 OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL