Patent ID: 9061090
Filing Date: 2015-06-23
Classification: A61F,A61L

Abstract:
1. An artificial hip prosthesis stem formed by stacking fiberglass reinforced plastic materials, comprising: a stem having structural elements made from fiberglass reinforced plastic 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 fiberglass reinforced plastic structural elements and applying heat and pressure thereto to melt resins impregnated in each of the structural elements, and the upper outer shell and the lower outer shell being curved prepreg sheets formed by impregnating carbon fibers arranged at an angle substantially 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, and overlapping 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.