Drug delivery device
AssigneeSanofi-Aventis Deutschland GmbH
InventorDavid Aubrey Plumptre
Life of this patent
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Abstract
The invention relates to a disposable drug delivery device for selecting and dispensing a number of user variable doses of a medicament. The device comprises a housing, a cartridge holder for retaining a cartridge containing the medicament, a piston rod displaceable relative to the cartridge holder, a driver coupled to the piston rod, a display member for indicating a set dose and being coupled to the housing and to the driver, and a button coupled to the display member and to the driver.
Claims16
A disposable drug delivery device for dispensing a number of user variable doses of a medicament, the disposable drug delivery device comprising:
- a cartridge holder;
- a housing comprising an outer body and an inner body, wherein the outer body and the cartridge holder comprise a single, one-piece component;
- a piston rod;
- a driver coupled to the piston rod, wherein the driver further comprises a hinged protrusion that engages splines on an inner surface of the inner body;
- a display member rotationally coupled to the housing and to the driver;
- a button coupled to the display member and to the driver, wherein the button is rotationally coupled to the driver, and wherein the button further comprises a recess configured to accept the hinged protrusion as the hinged protrusion is flexed radially inward during dose setting;
- a nut positioned between the inner body and the driver, wherein the nut is threadedly engaged with external threads on the driver and is configured to count a number of units of medicament delivered by the disposable drug delivery device;
- and
- a clutch operatively positioned between the display member and the button.
A disposable drug delivery device for dispensing a number of user variable doses of a medicament, the disposable drug delivery device comprising:
- a cartridge holder;
- a housing comprising an outer body and an inner body, wherein the outer body and the cartridge holder comprise a single, one-piece component;
- a piston rod;
- a driver coupled to the piston rod, wherein the driver further comprises a hinged protrusion that engages splines on an inner surface of the inner body;
- a display member rotationally coupled to the housing and to the driver;
- a button coupled to the display member and to the driver, wherein the button is rotationally coupled to the driver, and wherein the button further comprises a recess configured to accept the hinged protrusion as the hinged protrusion is flexed radially inward during dose setting;
- and
- a clutch operatively positioned between the display member and the button.
Dependencies are inferred from the claim text.