DRUG DELIVERY DEVICE WITH DOSE DIAL SLEEVE ROTATIONAL STOP
First Claim
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1. A dose setting mechanism for a drug delivery device, said mechanism comprising:
- an inner housing having a helical groove along an external surface of said inner housing, said inner housing comprising a first rotational stop member near one end of said helical groove; and
a dial sleeve rotatably engaged with said helical groove of said inner housing, wherein, when a user rotates said dial sleeve to select a dose, said first rotational stop member prevents said user from selecting a dose greater than a pre-defined maximum selectable dose.
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Abstract
A method and system for a dose setting mechanism of a drug delivery device. The dose setting mechanism includes an inner housing having a helical groove along an external surface of the housing. The inner housing includes a rotational stop feature near one end of the helical groove. The dose setting mechanism also includes a dial sleeve rotatably engaged with the helical groove of the inner housing. When a user rotates the dial sleeve to select a dose, the rotational stop member prevents the user from selecting a dose greater than a pre-defined maximum selectable dose.
43 Citations
22 Claims
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1. A dose setting mechanism for a drug delivery device, said mechanism comprising:
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an inner housing having a helical groove along an external surface of said inner housing, said inner housing comprising a first rotational stop member near one end of said helical groove; and a dial sleeve rotatably engaged with said helical groove of said inner housing, wherein, when a user rotates said dial sleeve to select a dose, said first rotational stop member prevents said user from selecting a dose greater than a pre-defined maximum selectable dose. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 20, 21, 22)
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14. A method of assembling a dose setting mechanism, said method comprising the steps of:
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establishing a helical groove along an outer surface of an inner housing; defining at least one rotational stop feature near one end of said helical groove, said at least one rotational stop residing along said outer surface of said inner housing; and assembling a dial sleeve over said inner housing by rotating said dial sleeve with respect to said inner housing, said dial sleeve in threaded engagement with said helical groove. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification