| 摘要 |
FIELD: medical equipment, in particular, portable injection means for dosed introduction of controlled amounts of medicinal drugs. ^ SUBSTANCE: drive mechanism for injection apparatus has piston positioned for progressive displacement along first axis relative to first end of ampoule containing medicinal drug for driving of plug, which closes first end of ampoule, into ampoule in order to force medicinal drug through feeding member fixed at second end of ampoule. Shifting mechanism has dose setting spindle positioned along second axis, said second axis extending in parallel with first axis, transfer device coupled between dose setting spindle and piston, and shifting means adapted for shifting of dose setting spindle relative to ampoule containing medicinal drug. Movement of shifting means in first direction causes movement of dose setting spindle and piston in first direction. ^ EFFECT: compact construction, effective usage of piston for driving of ampoule plug to move within ampoule to position providing introduction of minimal dose in ampoule and full withdrawal of plug from ampoule for replacement thereof. ^ 10 cl, 7 dwg |
