Patents by Inventor William H. Monsen

William H. Monsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Implantable drug delivery device with peristaltic pump having a bobbin roller assembly
    Patent number: 6733476
    Abstract: An implantable drug infusion device includes a pump tube for holding a liquid to be pumped. A race is configured to support the pump tube. A roller assembly is configured to compress the tube against the race at one or more points along the path, and the roller assembly includes at least one roller. A drive assembly drives the roller assembly relative to the tube along the path so as to move the liquid through the tube. At least two biasing members are operably connected to the roller to bias the roller against the tube, the two biasing members forming an angle.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: May 11, 2004
    Assignee: Medtronic, Inc.
    Inventors: Steven R. Christenson, James Randall, Micheal Thomas Hegland, James M. Haase, Mark S. Lent, William H. Monsen
  • Implantable drug delivery device with peristaltic pump having a bobbin roller assembly
    Publication number: 20020173755
    Abstract: An implantable drug infusion device includes a pump tube for holding a liquid to be pumped. A race is configured to support the pump tube. A roller assembly is configured to compress the tube against the race at one or more points along the path, and the roller assembly includes at least one roller. A drive assembly drives the roller assembly relative to the tube along the path so as to move the liquid through the tube. At least two biasing members are operably connected to the roller to bias the roller against the tube, the two biasing members forming an angle.
    Type: Application
    Filed: April 13, 2001
    Publication date: November 21, 2002
    Inventors: Steven R. Christenson, James Randall, Michael Thomas Hegland, James M. Haase, Mark S. Lent, William H. Monsen