DOSE SETTING MECHANISM FOR PRIMING A DRUG DELIVERY DEVICE
First Claim
Patent Images
1. A dose setting mechanism for a drug delivery device comprising:
- a dial sleeve;
a nut; and
an inner body,wherein the dial sleeve is coupled to the nut that is threadedly engaged to the inner body,wherein the dial sleeve moves axially relative to the nut during priming of the drug delivery device, andwherein the dial sleeve translates along a helical path during dose setting of the drug delivery device.
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Accused Products
Abstract
A method and system for priming a drug delivery device. The drug delivery device includes a forced priming feature that requires the user to move the dose dial sleeve axially to cause the spindle to pre-load a cartridge bung before a first dose can be dialed.
31 Citations
14 Claims
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1. A dose setting mechanism for a drug delivery device comprising:
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a dial sleeve; a nut; and an inner body, wherein the dial sleeve is coupled to the nut that is threadedly engaged to the inner body, wherein the dial sleeve moves axially relative to the nut during priming of the drug delivery device, and wherein the dial sleeve translates along a helical path during dose setting of the drug delivery device.
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2. A drug delivery device having a forced priming feature comprising
a. a cartridge holder configured to contain a cartridge of medicament sealed with a bung; -
b. a dose dialing assembly containing a spindle configured to move the bung in an axial direction during dose delivery, an inner body with a rotational counter stop, a nut threadedly engaged with the inner body and attached to a number sleeve having a proximal and a distal end, wherein the number sleeve has a first and a second axial position relative to the nut; c. a sliding lock on the number sleeve that engages the nut when the number sleeve is in the second distal position; and d. a stop on the number sleeve that abuts the rotational counter stop on the inner body when the number sleeve is in the first axial position to prevent a user from setting a dose of medicament. - View Dependent Claims (3, 4, 5, 6)
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7. A method of ensuring a user primes a drug delivery device before setting a first dose comprising,
a. providing to a user a dose dial sleeve coupled with a nut threadedly engage on an inner body of a drug delivery device; - and
b. requiring the user is to move the dose dial sleeve axially in the distal direction a specific distance to irreversibly engage causing a spindle to move axially to pre-load a bung in a container of medicament.
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8. A method of ensuring a user primes a drug delivery device before setting a first dose comprising
a. providing a user with a drug delivery device having a cartridge holder portion and a dose dialing portion containing a spindle, where the cartridge holder contains a cartridge containing a bung and medicament and where a number sleeve is in a first axial position; -
b. preventing the user from dialing a dose by providing a rotational stop on the number sleeve such that it engages a counter stop on an inner body when the number sleeve is in a first axial position; and c. requiring the user to move the number sleeve from the first axial position to a second axial position to disengage the stop and counter stop and to engage a sliding lock between the number sleeve and a nut attached to the inner body.
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9. A drug delivery device having a forced priming feature comprising
a. a cartridge holder containing a cartridge of medicament sealed with a bung; -
b. a dose dialing assembly containing a spindle configured to move the bung in an axial direction during dose delivery, an inner body with a rotational counter stop, a nut threadedly engaged with the inner body and attached to a number sleeve having a proximal and a distal end, wherein the number sleeve has a first and a second axial position; c. a collar threadedly engaged with the distal end of the number sleeve such that rotational of the collar causes the number sleeve to move from the first axial position where a user is prevented from setting a dose to the second axial position where a dose can then be set. - View Dependent Claims (10, 11, 12)
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13. A method of ensuring a user primes a drug delivery device before setting a first dose comprising
a. providing a user with a drug delivery device having a cartridge holder portion and a dose dialing portion containing a spindle, where the cartridge holder contains a cartridge containing a bung and medicament and where a number sleeve is in a first axial position; -
b. preventing the user from dialing a dose by providing a rotational stop on the number sleeve such that it engages a counter stop on an inner body when the number sleeve is in a first axial position; and c. requiring the user to rotate a collar threadedly engaged with the number sleeve to move the number sleeve from the first axial position to a second axial position where the stop and counter stop are disengaged. - View Dependent Claims (14)
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Specification