providing {HEAD ~ a syringe body} having {TAIL ~ proximal and distal ends}, a cylindrical passage, and a second lock element, located only adjacent the distal end of said cylindrical passage, which mates whit said first lock element 
having
providing { HEAD ~ a syringe body } having { TAIL ~ proximal and distal ends } , a cylindrical passage , and a second lock element , located only adjacent the distal end of said cylindrical passage , which mates whit said first lock element
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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 OTH