The assembly 9, wherein the agent cartridge includes a dispensing port in fluid communication with the medical agent storage portion, and wherein {TAIL ~ the passage} is configured such that it remains in fluid communication with the dispensing port as the member is moved relative to {HEAD ~ the housing} 
The assembly 9 , wherein the agent cartridge includes a dispensing port in fluid communication with the medical agent storage portion , and wherein { TAIL ~ the passage } is configured such that it remains in fluid communication with the dispensing port as the member is moved relative to { HEAD ~ the housing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 HEAD HEAD HEAD HEAD HEAD HEAD