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Stem Structure For Composite Prosthetic Hip And Method For Manufacturing The Same

  • US 20130030546A1
  • Filed: 03/17/2011
  • Published: 01/31/2013
  • Est. Priority Date: 03/17/2010
  • Status: Active Grant
First Claim
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1. An artificial hip prosthesis FRP stem formed by stacking FRP materials, comprising:

  • a stem having structural elements made from FRP consisting of;

    an upper outer shell, a main structure upper half, a main structure lower half, and a lower outer shell when being divided in anterior and posterior directions into two halves to be placed in a flat state, and being integrated into one piece by stacking the FRP structural elements and applying heat and pressure thereto to melt resins impregnated in each of the structural elements, andthe upper outer shell and the lower outer shell being curved prepreg sheets formed by impregnating carbon fibers arranged at an angle of ±

    45 degrees with a thermoplastic resin,the main structure upper and lower halves being evenly stacked parts in which prepreg sheets formed by impregnating carbon fiber with a thermoplastic resin are stacked, andoverlapping sections of the upper and lower outer shells being formed such that the left and right portions of the main structure formed by integrating the both halves have no stepped outer surface.

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