For example, {HEAD ~ the internal diameter} of the tubular body or cannula is normally in {TAIL ~ the range} of 5 to 20 mm., or more, although other sizes such as larger oval shapes may be employed, if desired 
is normally in
For example , { HEAD ~ the internal diameter } of the tubular body or cannula is normally in { TAIL ~ the range } of 5 to 20 mm . , or more , although other sizes such as larger oval shapes may be employed , if desired
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL 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 OTH