Patents by Inventor Wilfred Mathewson

Wilfred Mathewson 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).

  • Integrated low priming volume centrifugal pump and membrane oxygenator
    Patent number: 5591404
    Abstract: A low priming volume integrated centrifugal pump and membrane oxygenator comprising a housing (10) containing a mass transfer bed (40) comprising gas permeable hollow membrane fibers (38) placed circumferentially in a ring around an impeller (30). The mass transfer bed (40) is formed by a multiple wrap of a fiber ribbon (42) comprising at least two layers of fibers (38) bonded in precise orientation with fibers in alternate layers positioned in line with the opening between fibers in the layers above and below. Adhesion means ensure precise orientation of the fibers (38). Priming volume is further reduced by a small impeller flow channel volume.
    Type: Grant
    Filed: July 23, 1993
    Date of Patent: January 7, 1997
    Inventor: Wilfred Mathewson