US 9,517,308 B2 · Dose setting mechanism and method of setting a dose

Abstract

A dose setting mechanism comprises a drug delivery device housing and a dual state track provided within the housing that is axially and rotationally fixed with respect to the housing. A dose dial component is positioned in the housing and rotatable during dose setting and dose delivery. A clutch is rotatable during dose setting and non-rotatable during dose delivery. A clutch plate is rotationally fixed relative to the housing; and a clutch blocker is in threaded engagement with the clutch plate and has a radial key engaged with the dual state track. The mechanism may comprise a biasing member positioned between the clutch blocker and clutch plate.

Claims14

Dependent claims

Dose setting mechanism for a drug delivery device, the mechanism comprising:

a drug delivery device housing;
a dose dial component positioned at least partly in the housing and rotatable during dose setting and dose delivery,
characterized by
at least one dual state track within the housing that is axially and rotationally fixed with respect to the housing, which comprises a first track, a second track, and a third track;
a clutch plate rotationally fixed relative to the housing;
and
a clutch blocker in threaded engagement with the clutch plate and having at least one radial key engaged with the at least one dual state track,
wherein the radial key is engaged with the first track during dose setting until a predetermined minimum dose is dialed with the dose dial component and with the second track after a predetermined minimum dose is dialed with the dose dial component.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/878,762Filed 11 Oct 2011 · us provisional application

Priority

EP 1116818831 May 2011

Published

US 2013/0296802 A17 Nov 2013

Granted

13 Dec 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61M 5/31535
Dosing mechanisms, i.e. setting a dose: means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing,…
A61M 5/24
Syringes: ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or cartridges, e.g. automatic
A61M 5/31525
Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing…:…
A61M 5/31551
By rotational movement of dose setting member, e.g. during setting or filling of a syringe: including axial movement of dose setting member

Dose setting mechanism and method of setting a dose

Life of this patent

Dose setting mechanism and method of setting a dose

Life of this patent

Abstract

Claims14