Dual unit syringe

Claim 1

In a dual unit medicament dispensing syringe the combination of a tubular body having a chamber therein containing a liquid medicament and having a reduced top discharged nozzle provided with a passageway therethrough communicating with the chamber, the chamber at the lower end of said tubular body being opened, plunger means adjustably extending through said opening into the chamber having rotatable nonremovable length adjustable means threaded thereon to variably limit the operating travel of the plunger in the chamber whereby to control the amount of liquid medicament dosage expelled from said chamber, a removable cannula having a chamber containing a liquid medicament therein provided with an outer diametrically reduced applicator with a discharge passage communicatng with said cannula chamber, said cannula at is its opposite end from said applicator having a sealing disc disposed inwardly a sufficient distance from said end to provide an opened ended socket receiving the nozzle of the tubular body, said socket being of such length that when the nozzle is fully inserted therein it will rupture the disc, and a removable sealing cap for the reduced end of said cannula.