초록 ▼

A novel syringe is provided herein. It includes a cylindrical barrel having a closed forward end provided with a longitudinally-extending channel therethrough. A hypodermic needle is slidably received in the channel. A frangible septum is disposed in the channel and is adapted to be pierced upon inw

A novel syringe is provided herein. It includes a cylindrical barrel having a closed forward end provided with a longitudinally-extending channel therethrough. A hypodermic needle is slidably received in the channel. A frangible septum is disposed in the channel and is adapted to be pierced upon inward sliding movement of the hypodermic needle. At least a single stopper is slidably and sealingly disposed in the barrel to divide the barrel into (i) a forward, payload chamber, defined between the closed forward end of the barrel and the leading face of the stopper, and (ii) a rearward propulsion chamber downstream of the trailing face of the stopper. The propulsion chamber is controllably variably prechargeable to a predetermined gaseous pressure. The syringe may be used with a novel retractable collar and with a novel sliding fin assembly. This syringe allows injection, from a distance, of aquatic or land animals with tranquillizers, medications, or other chemical compounds without entrapment and stressing of the animal. A variation of this syringe is taught herein to allow the remote tranquillization and entrapment of aquatic animals where the animals may not be visibly selected.

대표청구항 ▼

A syringe comprising: (a) a barrel having a closed forward end provided with a longitudinally extending channel therethrough; (b) a hypodermic needle slidable received in said channel; (c) a frangible septum disposed in said channel and adapted to be pierced upon inward sliding movement of said hypo

A syringe comprising: (a) a barrel having a closed forward end provided with a longitudinally extending channel therethrough; (b) a hypodermic needle slidable received in said channel; (c) a frangible septum disposed in said channel and adapted to be pierced upon inward sliding movement of said hypodermic needle; and, (d) at least a single stopper slidably and sealingly disposed in said barrel to divide said barrel into (i) a forward, payload chamber, defined between the closed forward end of said barrel and the leading face of the stopper and (ii) a rearward propulsion chamber downstream of the trailing face of said stopper, said propulsion chamber being prechargeable to a controllable, variable, predetermined gaseous pressure, and wherein said hypodermic needle is a releasing needle structure comprising: an open-ended, skirt-shaped guide having a closed end pireced by a longitudinally-extending channel; a hollow hypodermic needle temporarily secured within said guide by means of a lower fixed disc attached to said needle, said hypodermic needle being adapted to be slidable within said guide; a compressed recoil member disposed between said fixed disc and said guide; and an upper, temporary, disintegratable disc held in place by an impact frangible seal; whereby disintegration of said disc results in movement of said needle into said cylindrical guide.