A TORSION SPRING DRIVEN FIXED DOSE INJECTION DEVICE
The invention relates to a medical injection device for dispensing substantially equally sized dose volumes of a liquid drug. The injection is driven by a torsion spring which is strained prior to each dose release by rotation of a connector element connecting the torsion spring to the rotational dr...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | The invention relates to a medical injection device for dispensing substantially equally sized dose volumes of a liquid drug. The injection is driven by a torsion spring which is strained prior to each dose release by rotation of a connector element connecting the torsion spring to the rotational drive structure. The dose release is controlled by an axial movement of the rotational drive structure which can only be moved axially when the connector element has been rotated to a specific rotational position. |
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