Patents by Inventor Marc D. Grynpas

Marc D. Grynpas 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).

  • Bone prosthesis fixation device and methods of using same
    Patent number: 6126691
    Abstract: A fixation mechanism for use in a prosthesis implantable into bone comprises a main body defining an internal passageway and including a plurality of openings extending between the internal passageway and the exterior of the main body. The device has a plurality of bone engaging members, with each bone engaging member being mounted in a respective opening for movement between a retracted position in which the bone engaging member does not extend outside the body, and an extended position in which the bone engaging member extends through the respective opening into surrounding bone to secure the device. A plunger within the main body is adapted to directly or indirectly engage the bone engaging members to displace the bone engaging members out through their respective openings.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: October 3, 2000
    Assignee: Mount Sinai Hospital Corporation
    Inventors: Mehran Kasra, Marc D. Grynpas
  • Composite material for use in orthopaedics
    Patent number: 5017627
    Abstract: A composite of a homo- or co-polyolefin having an average molecular weight greater than 100,000 with from 30 to 50% by volume of a particulate inorganic solid for use in endoprosthesis.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: May 21, 1991
    Assignee: National Research Development Corporation
    Inventors: William Bonfield, Jeremy A. Bowman, Marc D. Grynpas