Patents by Inventor Derek Boughner

Derek Boughner 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).

  • Expansible bioprosthetic valve stent
    Patent number: 6458156
    Abstract: A bioprosthetic valve stent is fabricated from a hydrogel, and a bioprosthetic heart valve comprises such a stent. A method for fabricating a hydrogel bioprosthetic valve stent comprises filling a mold cavity with a solution of a hydrogel, allowing the hydrogel to solidity, removing the solidified hydrogel from the mold cavity and hydrating the hydrogel.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: October 1, 2002
    Assignee: The University of Western Ontario
    Inventors: Wan-Kei Wan, Anthony Duncan, Gordon Campbell, Derek Boughner
  • Bioprostethic valve
    Patent number: 5549665
    Abstract: A bioprosthetic valve comprising a support ring having three spaced apart end stops projecting upwardly therefrom, a stent post ring having three spaced apart stent posts pivotally connected thereto and adapted to engage respective ones of the end stops so as to permit outward pivoting of the stent posts and to prevent inward pivoting thereof, a leaflet valve having three generally triangular leaflets defining respective cusps, the leaflets being joined at respective commissures, and a sewing ring for attaching the leaflet valve to the stent post ring and support ring.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: August 27, 1996
    Assignee: London Health Association
    Inventors: Ivan Vesely, Slawomir Krucinski, Gordon Campbell, Derek Boughner, Mohan Dokainish