Dose Setting Mechanism and Method of Setting a Dose
AssigneeSanofi-Aventis Deutschland GmbH
InventorsSimon Lewis Bilton, David Martin Leak
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Abstract
A dose setting mechanism for a drug delivery device. The mechanism may comprise a drug delivery device housing. A dose dial component is positioned in the housing and rotatable during dose setting and dose delivery. A split threaded insert is in threaded engagement with the dose dial component. The insert can transform from a first configuration to a second configuration when the dose dial component is rotated. In one dose setting mechanism arrangement, the first configuration may comprise a first open configuration and the second configuration may comprise a second closed configuration.
Claims15
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;
- and
- a split threaded insert in threaded engagement with the dose dial component, wherein the insert transforms from a first configuration to a second configuration when the dose dial component is rotated.
A method of setting at least a predetermined allowable minimum dose of a medicament comprising the steps of:
- inducing a high-friction state in a drug delivery device when a dose less than a predetermined minimum allowable dose is set by the drug delivery device, and
- inducing a low-friction state in the delivery device when at least the predetermined minimum allowable dose is set by the drug delivery device.
Dependencies are inferred from the claim text.