MEDICINAL FEEDING APPARATUS Russian patent published in 2005 - IPC

Abstract RU 2257234 C2

FIELD: medicine, in particular, devices used in injection means.

SUBSTANCE: apparatus has piston with rod formed as coil spring whose coils define external thread engageable with internal thread of nut-type member. Rotation of nut-type member causes advancement of piston rod. This advancement is used for displacement of piston within cylinder containing liquid to be injected. Coil spring defining piston rod is equipped with flat portion provided on peripheral region of coil spring. Such construction eliminates slippage of flexible rod during advancement of rod.

EFFECT: increased efficiency and simplified construction.

7 cl, 3 dwg

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RU 2 257 234 C2

Authors

Klitmose Lars Peter

L'Junggren Khenrik

Dates

2005-07-27—Published

2001-03-16—Filed