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Inner housing for a drug delivery device

  • US 10,391,254 B2
  • Filed: 07/29/2015
  • Issued: 08/27/2019
  • Est. Priority Date: 06/01/2009
  • Status: Active Grant
First Claim
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1. A dose setting mechanism for a drug delivery device, said dose setting mechanism comprising:

  • an outer housing;

    an inner housing having an external groove, the inner housing having an inner surface comprising a mechanical configuration;

    a driver;

    a dial sleeve disposed between said outer housing and said inner housing, said dial sleeve being rotatably engaged with said external groove of said inner housing; and

    a dose dial grip rotatably coupled to said dial sleeve, said dose dial grip being non-rotatably coupled to a dose button,wherein, when a dose is set by rotating said dose dial grip of said dose setting mechanism, said dial sleeve and said driver are both rotated with respect to both said outer housing and said inner housing and said dial sleeve and said driver are both translated away from both said outer housing and said inner housing, andwherein the mechanical configuration of the inner surface of the inner housing is configured to prevent rotation of said driver relative to said inner housing during dispensing of said dose set by said dose setting mechanism to guide said driver to dispense said dose.

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