INNER HOUSING FOR A DRUG DELIVERY DEVICE

摘要

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. The inner housing 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.

主权项

1. A dose setting mechanism for a drug delivery device, said mechanism comprising an outer housing, an inner housing, a driver and a dial sleeve disposed between said outer housing and said inner housing, wherein the inner housing has an external groove, said inner housing being operatively coupled to the driver and guiding said driver to dispense a dose set by said dose setting mechanism and wherein said dial sleeve is rotatably engaged with said external groove of said inner housing;
and with the dose setting mechanism further comprising a dose dial grip being provided rotatably coupled to said dial sleeve, said dose dial grip being non-rotatably coupled to a dose button, such that when a dose is set by rotating said dose dial grip of said dose setting mechanism, said dial sleeve is rotated with respect to both said outer housing and said inner housing and said dial sleeve is translated away from both said outer housing and said inner housing and the dose setting mechanism being configured such that when a dose is set by said dose setting mechanism, said dial sleeve and driver are both rotated with respect to both said outer housing and said inner housing and are translated away from both said outer housing and said inner housing.