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Unbalanced prosthetic device for providing side-dependent twisting-rotational axial-loading coupling

  • US 6,299,649 B1
  • Filed: 07/26/1999
  • Issued: 10/09/2001
  • Est. Priority Date: 06/22/1996
  • Status: Expired due to Fees
First Claim
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1. A composite prosthetic device provided for implanting in a femoral bone having a shaft and a neck, wherein said shaft oriented in a longitudinal stem-length direction defining a longitudinal axis and said neck extended from said shaft at a positive acute angle θ

  • NECK relative to said longitudinal axis, said prosthetic device comprising;

    a plurality of plies wherein each ply being composed of a plurality of reinforcing fibers aligned in a ply orientational angle θ

    i relative to said longitudinal axis where i=1, 2, 3, . . . ,N and N being the number of said plies;

    said plurality of plies being laminated together for forming said prosthetic device wherein said ply orientational angles represented θ

    1, θ

    2, θ

    3, . . . , and θ

    N, are negative acute angles with respect to said longitudinal axis wherein θ

    1+θ

    2,+θ

    3+ . . . +θ

    N, is a none-zero negative value thus forming an unbalanced prosthetic device.

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