Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1985-09-16
1987-08-04
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604139, 604143, 273418, 43 4313, A61M 500
Patent
active
046843663
ABSTRACT:
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.
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Denny Christopher G.
Harvey Brian J.
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