Patents Examined by Anhtuant T. Nguyen
  • Constant flow medication infusion pump
    Patent number: 6280416
    Abstract: A medication infusion pump includes a housing, a medication chamber defined within the housing, a medication delivery device in fluid communication with the medication chamber, a propellant chamber defined within the housing and adapted to apply a predetermined positive pressure to a medication in the medication chamber, and a non-ozone depleting, non-toxic propellant within the propellant chamber. The propellant preferably has a vapor pressure between about 11 psig and about 50 psig at 37° C.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: August 28, 2001
    Assignee: MiniMed Inc.
    Inventors: William P. Van Antwerp, Susan M. McConnell, Peter C. Lord