Artificial joint femoral stem and preparation method thereof
A technology for artificial joints and femoral stems, applied in the direction of femur, femoral head, femoral shaft, etc., can solve the problems of unstable long-term fixation effect, poor bone ingrowth effect, and recovery after surgery failure, to maintain effective mechanical support, mechanical High strength and reduced stress shielding effect
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[0019] In the preparation method of the artificial joint femoral stem of the present invention, various processing methods are used to form holes or grooves on the body of the artificial joint femoral stem, and then the additive manufacturing technology is used to construct columnar processes, spherical processes or other three-dimensional structures in the holes or grooves. shape.
[0020] The various processing methods are any processing methods known in the art that can form holes or grooves on the body of the artificial joint femoral stem, such as casting, forging, laser melting, acid etching and the like.
[0021] The additive manufacturing technology is preferably but not limited to 3D printing.
[0022] The artificial joint femoral stem body is preferably but not limited to be made by vacuum dewaxing casting or forging of biocompatible metal materials, wherein the biocompatible metal materials are preferably but not limited to titanium alloys, cobalt-chromium alloys, wh...
Embodiment 1
[0024] An artificial joint femoral stem, the preparation method of which comprises: manufacturing the artificial joint femoral stem body through vacuum dewaxing casting or forging through titanium alloy, and then adopting the laser melting method on the long-term contact part between the artificial joint femoral stem body and human bone Holes or grooves are generated on the surface, and then 3D printing is used to construct columnar protrusions, spherical protrusions or other three-dimensional shapes in the holes; the laser melting method adopts the existing technology, so that the diameter of the holes is 50 μm, the depth is 25 μm, and the width of the grooves is 50μm, and the depth is 25μm; the 3D printing technology adopts the existing technology, so that the height of the columnar, spherical or other three-dimensional shapes is 2μm.
Embodiment 2
[0026] An artificial joint femoral stem, the preparation method of which comprises: manufacturing the artificial joint femoral stem body through vacuum dewaxing casting or forging through titanium alloy, and then adopting the laser melting method on the long-term contact part between the artificial joint femoral stem body and human bone Holes or grooves are generated on the surface, and then 3D printing is used to construct columnar protrusions, spherical protrusions or other three-dimensional shapes in the holes; this laser melting method adopts the existing technology, so that the diameter of the hole is 10000 μm, the depth is 5000 μm, and the width of the groove is 10000μm, the depth is 5000μm; the 3D printing technology adopts the existing technology, so that the height of the columnar, spherical or other three-dimensional shape is 6000μm.
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