A second member is disposed within the first member to transmit {TAIL ~ force} to move a cutting implement disposed at {HEAD ~ its distal end} and cause it to cut tissue that is exposed to the implement through the opening 
A second member is disposed within the first member to transmit { TAIL ~ force } to move a cutting implement disposed at { HEAD ~ its distal end } and cause it to cut tissue that is exposed to the implement through the opening
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH