Dose setting mechanism for priming a drug delivery device
First Claim
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1. A priming mechanism for a drug delivery device, said priming mechanism comprising:
- a dose setting mechanism comprisinga spindle; and
a dose dial sleeve;
a cartridge holder, said cartridge holder comprising a cartridge, said cartridge comprising a movable bung near a proximal end of said cartridge;
a coupling part connecting said cartridge holder to said dose dial sleeve of said dose setting mechanism, anda spindle nut rotationally coupled to said coupling part, said spindle nut coupling said cartridge holder to said spindle of said dose setting mechanism;
such that when said cartridge holder is rotated with respect to said dose setting mechanism,said spindle nut is rotated and moves said spindle into an abutting engagement with said bung so as to prime the drug delivery device, andwherein said dose setting mechanism comprises at least one flexible locking element,wherein when said cartridge holder is rotated, said coupling part also rotates to thereby release said at least one flexible locking element and allowing said dose dial sleeve to rotate and allow a user of said medical delivery device to set a dose.
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Abstract
A method and system for providing a drug delivery device. The drug delivery device comprises a dose setting mechanism comprising a spindle and a cartridge holder coupled to the dose setting mechanism. The cartridge holder comprising a cartridge having a movable bung at one end of the cartridge. The cartridge holder must be rotated before a dose may set with the dose setting mechanism.
55 Citations
13 Claims
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1. A priming mechanism for a drug delivery device, said priming mechanism comprising:
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a dose setting mechanism comprising a spindle; and a dose dial sleeve; a cartridge holder, said cartridge holder comprising a cartridge, said cartridge comprising a movable bung near a proximal end of said cartridge; a coupling part connecting said cartridge holder to said dose dial sleeve of said dose setting mechanism, and a spindle nut rotationally coupled to said coupling part, said spindle nut coupling said cartridge holder to said spindle of said dose setting mechanism; such that when said cartridge holder is rotated with respect to said dose setting mechanism, said spindle nut is rotated and moves said spindle into an abutting engagement with said bung so as to prime the drug delivery device, and wherein said dose setting mechanism comprises at least one flexible locking element, wherein when said cartridge holder is rotated, said coupling part also rotates to thereby release said at least one flexible locking element and allowing said dose dial sleeve to rotate and allow a user of said medical delivery device to set a dose. - View Dependent Claims (2, 3, 4)
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5. A dose setting mechanism for priming a drug delivery device,
said dose setting mechanism configured to be coupled to a cartridge holder comprising a cartridge, said cartridge comprising a movable bung, said dose setting mechanism comprising: -
a spindle; and a dose dial sleeve; a coupling part configured to connect said cartridge holder to said dose dial sleeve, and a spindle nut rotationally coupled to said coupling part, said spindle nut coupling said cartridge holder to said spindle of said dose setting mechanism; such that when said cartridge holder is rotated with respect to said dose setting mechanism, said spindle nut is rotated, wherein said coupling part unlocks said dose dial sleeve so that said dose dial sleeve may be rotated to set a dose, wherein said cartridge holder must be rotated with respect to said dose setting mechanism before said dose may be set with said dose setting mechanism wherein said dose setting mechanism comprises at least one flexible locking element, wherein when said cartridge holder is rotated, said coupling part also rotates to thereby release said at least one flexible locking element and allowing said dose dial sleeve to rotate and allow a user of said medical delivery device to set a dose. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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Specification