Patents Assigned to BHC Laboratories, Inc.
  • Composite femoral implant having increased neck strength
    Patent number: 5163962
    Abstract: Disclosed is an improvement in a femoral implant for a hip prosthesis involving a longitudinal shaft having a neck extending therefrom at an acute angle .theta. to the longitudinal direction made of layers of carbon fiber in a polymeric matrix, each layer containing unidirectional fibers and the layers arranged such that carbon fibers are oriented in the longitudinal direction and the .+-..theta. direction. The improvement involves balancing at least 50% of the layers in the .+-..theta. direction.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: November 17, 1992
    Assignee: BHC Laboratories, Inc.
    Inventors: Richard A. Salzstein, Guy R. Toombes