an outer distal tip attached to said outer stationary tubular body, said {HEAD ~ outer tip} having {TAIL ~ a proximal end}, a distal end and an opening at said distal end in its side and end wall, said opening having a first cutting edge around its periphery 
an outer distal tip attached to said outer stationary tubular body , said { HEAD ~ outer tip } having { TAIL ~ a proximal end } , a distal end and an opening at said distal end in its side and end wall , said opening having a first cutting edge around its periphery
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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 OTH OTH OTH OTH