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METHODS AND SYSTEMS FOR DOSING A MEDICAMENT

  • US 20120101451A1
  • Filed: 10/22/2010
  • Published: 04/26/2012
  • Est. Priority Date: 10/22/2010
  • Status: Active Grant
First Claim
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1. A method of dosing a medicament using a mechanical pump system comprising an actuation element, a direct drive piston system including a piston, and a lost motion valve system, the method comprising the steps of:

  • moving the actuation element from a rest position to a fill end position to fill incrementally a piston chamber of the piston system with medicament from a reservoir;

    moving the actuation element an additional distance to a point of no return to move a valve of the valve system from a fill position to a dosing position; and

    moving the actuation element past the point of no return to force a full dose of medicament out of the piston chamber to a dosing conduit.

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