Fixed-dose medicament delivery device
AssigneeSanofi-Aventis Deutschland GmbH
InventorsUwe Dasbach, Verena Hofmann
Life of this patent
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Abstract
A medicament delivery device is presented having a housing, a safety sleeve movable between an extended position and a retracted position relative to the housing, a guide sleeve rotatably disposed in the housing, a plunger slidably disposed in the safety sleeve, and a button coupled to the housing. When the safety sleeve is in the retracted position, translation of the button relative to the housing causes the guide sleeve to rotate relative to the safety sleeve. Rotation of the guide sleeve relative to the safety sleeve allows the plunger to translate a predetermined axial distance relative to the safety sleeve.
Claims18
A medicament delivery device comprising:
- a housing;
- a safety sleeve movable between an extended position and a retracted position relative to the housing;
- a guide sleeve rotatably disposed in the housing, the guide sleeve comprising at least one guide pin adapted to engage one or more of a plurality of ribs on the safety sleeve when the safety sleeve is in the extended position;
- a plunger slidably disposed in the safety sleeve;
- and
- a button coupled to the housing, the button comprising one or more projections adapted to engage the at least one guide pin of the guide sleeve such that the guide sleeve rotates relative to the safety sleeve upon translation of the button relative to the housing when the safety sleeve is in the retracted position,
- wherein rotation of the guide sleeve relative to the safety sleeve allows the plunger to translate a predetermined axial distance relative to the safety sleeve.
Dependencies are inferred from the claim text.