Drug delivery device inner housing having helical spline
First Claim
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1. A drug delivery device comprising:
- a housing,a number sleeve,a button,a spindle not rotating during dose setting and rotating during injection,a driver engaged with the spindle via a groove, wherein the driver follows a helical path when setting a dose and a helical path in an opposite direction when delivering the dose, anda clutch engaged with the button such that the button is rotationally coupled with the driver during dose setting and decoupled during dose delivery.
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Abstract
A dose setting mechanism for a drug delivery device is disclosed. The mechanism comprises an outer housing and an inner housing having an external groove and a helical spline. The inner housing helical spline guides a driver to dispense a set dose. A dial sleeve is disposed between the outer and inner housing and is rotatably engaged with the inner housing. When a dose is set, the dial sleeve is rotated and translates away from both the outer housing and the inner housing.
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Citations
66 Claims
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1. A drug delivery device comprising:
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a housing, a number sleeve, a button, a spindle not rotating during dose setting and rotating during injection, a driver engaged with the spindle via a groove, wherein the driver follows a helical path when setting a dose and a helical path in an opposite direction when delivering the dose, and a clutch engaged with the button such that the button is rotationally coupled with the driver during dose setting and decoupled during dose delivery. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A dose setting mechanism configured to be secured to a cartridge holder for use as a drug delivery device, the dose setting mechanism comprising:
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a tubular shaped housing extending from a distal end to a proximal end, the distal end configured to be secured to a cartridge holder; a dial sleeve positioned within the tubular shaped housing, a button positioned near the proximal end of the cylindrically shaped housing, a rotatable spindle that rotates during administration of a dose, a driver threadedly engaged with the spindle, wherein the driver rotates in a first direction when setting a dose and rotates in a second direction that is opposite the first direction when delivering the set dose, and a clutch engaged with the button such that the button is rotationally coupled with the driver during dose setting and decoupled during dose delivery. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A dose setting mechanism for use with a drug delivery device, the dose setting mechanism comprising:
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a housing portion, the housing portion extending from a distal end to a proximal end; a dose dial grip operably positioned near the proximal end of the housing portion, wherein rotation of the dose dial grip causes a dose to be set by the dose setting mechanism; an axially moveable push button configured to initiate an administration of a set dose, the axially moveable push button operably disposed adjacent the dose dial grip; a rotatable dial sleeve, the rotatable dial sleeve comprising a surface configured to be in threaded engagement with the housing portion; a rotatable spindle, the rotatable spindle comprising at least one thread that is provided along at least a portion of an outer surface of the spindle, the spindle configured so that it does not rotate and does not move in an axially direction when the dose setting member is rotated to set a dose, and the spindle configured to rotate and move axially during the administration of the set dose; a driver that drives the spindle in a distal direction during the administration of the set dose, the driver comprising a thread that is in threaded engagement with the spindle; and a clutch engaged with the button such that the button is rotationally coupled with the driver during dose setting and decoupled during dose delivery; wherein when the dose is set, the dose dial grip rotates to set a dose that is viewable by way of a window provided by the housing, while the dose dial grip does not move in an axial direction, the axially moveable push button does not rotate and does not move in an axial direction; the dial sleeve rotates, and the driver rotates. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A method of setting a dose with a dose setting mechanism, where the dose setting mechanism comprises,
a housing, a dose dial grip, a button, a piston rod not rotating during dose setting and rotating during injection, a driver engaged with the piston rod via a groove, wherein the driver follows a helical path when setting a dose and a helical path in an opposite direction when delivering the dose, and a clutch engaged with the button such that the button is rotationally coupled with the driver during dose setting and decoupled during dose delivery, wherein the method comprises the steps of rotating a dose dial grip in a first direction; -
causing a driver to rotate in the first direction; translating the driver along a piston rod in a proximal direction, a proximal movement of the driver representative of a dose set by the dose setting mechanism; establishing a selected dose after the dose dial grip and the driver have been rotated in the first direction; providing a scale arrangement along an outer surface of a rotatable dial sleeve; causing the dial sleeve to rotate along with the dose setting button and the driver; and viewing the scale arrangement representative of the selected dose through a window of the drug delivery device wherein the scale arrangement of the dial sleeve is only visible by way of the window. - View Dependent Claims (58, 59, 60, 61, 62, 63, 64, 65, 66)
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Specification