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Pen-type injector

  • US 9,775,954 B2
  • Filed: 06/13/2016
  • Issued: 10/03/2017
  • Est. Priority Date: 03/03/2003
  • Status: Active Grant
First Claim
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1. A drug delivery device comprising:

  • a housing comprising (i) a thread, (ii) a dose dispensing end, and (iii) a stop member that is integral to the housing;

    a dose dial sleeve disposed radially inward from the housing, the dose dial sleeve comprising a thread that engages with the thread of the housing;

    a clutch disposed radially inward from the dose dial sleeve,a piston rod;

    whereinthe stop member is configured to engage the dose dial sleeve and prevent axial movement of a button away from the dose dispensing end;

    the clutch is configured to be rotationally fixed to the dose dial sleeve during dose setting;

    the piston rod is configured to traverse axially during dose dispensing; and

    the button is configured to be depressed axially towards the dose dispensing end of the housing.

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