NEEDLE INJECTOR Russian patent published in 1994 - IPC

FIELD: medical equipment. SUBSTANCE: needle injector has body with folded cover and screwed-on cover at body ends, and spring loaded pistons inside body. Made in body both sides are slots with cutouts along which, as along guides, screws are moved. The screws are secured in pistons, and they lock handwheels embracing body. Installed in folded cover is combined needle which consists of injection and puncturing parts, whose design with use of flexible members responsive to temperature change fully excludes their repeated use without their completing under laboratory conditions. Arranged in body hollow between piston and folded cover is package of ampoules with metered volume of apparatus. When piston is pushed, ampoule is punctured by needle and preparation enters the needle hollow, further pushing of piston results in injection. Upon completion of injection, cover is opened and used needle and ampoule are removed. EFFECT: higher efficiency. 6 dwg