a cartridge containing a biologically compatible compressed gas, said cartridge being attachable to {HEAD ~ said pressure supply conduit} for communicating said {TAIL ~ pressurized gas} from said cartridge to said pressure supply conduit 
for communicating
a cartridge containing a biologically compatible compressed gas , said cartridge being attachable to { HEAD ~ said pressure supply conduit } for communicating said { TAIL ~ pressurized gas } from said cartridge to said pressure supply conduit
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH