Cap assembly for a drug delivery device
AssigneeSanofi-Aventis Deutschland GmbH
InventorMichael Helmer
Life of this patent
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Abstract
The present invention relates to a cap assembly for a drug delivery device, comprising: a cap body (12) adapted to releasably engage with a housing of the drug delivery device and being further adapted to receive a needle assembly to be releasably interconnected with said housing, an ejector unit movably arranged on the cap body at least along the body's long axis and having mechanical transmission means adapted to transfer axial movement of the ejector unit to the needle assembly for ejecting the needle assembly from the cap body.
Claims13
A cap assembly for a drug delivery device, comprising:
- a cap body adapted to receive a needle assembly to be releasably interconnected with a housing of the drug delivery device, and
- an ejector unit movably arranged on the cap body at least along the body's long axis and comprising a mechanical transmission means adapted to transfer at least an axial displacement of the ejector unit to the needle assembly for ejecting the needle assembly from the cap body,
- wherein the ejector unit is slidably arranged on an outer circumference of a proximal end section of the cap body,
- wherein the ejector unit is at least displaceable into an ejecting position to eject the needle assembly from the cap body, wherein, in the ejecting position, the ejector unit at least partially protrudes in a proximal direction beyond a proximal end of the cap body,
- wherein the cap body comprises an annular groove at an inside facing portion of its sidewall to releasably engage with the housing of the drug delivery device, and
- wherein the cap body comprises a cupped receptacle for selectively receiving at least a portion of a cartridge holder or body of the drug delivery device.
A method of disengaging a needle assembly and a housing of a drug delivery device comprising the steps of:
- inserting the needle assembly mounted on a distal housing section of the drug delivery device into a cupped body of a cap assembly having a corresponding needle cap secured therein,
- mutually disengaging the needle assembly and the housing section by translationally and/or rotatably displacing the cap assembly and the housing away from each other, wherein the needle assembly is secured to the cap assembly, and
- displacing an ejector unit slidably arranged on an outer circumference of a proximal end section of the cap body in a longitudinal direction towards the open end of the cupped body and into an ejecting position to eject the needle assembly from the cap body,
- wherein, in the ejecting position, the ejector unit at least partially protrudes in a proximal direction beyond a proximal end of the cap body for ejecting the needle assembly from the cap assembly, and
- wherein the cap body comprises an annular groove at an inside facing portion of its sidewall to releasably engage with the housing of the drug delivery device.
Dependencies are inferred from the claim text.