Artificial hip joint consisting of multilayer shell core composite structural components
A composite structure, multi-layer shell technology, applied in the field of artificial femoral head and artificial hip joint, can solve problems such as difficulty in providing joint motion, reduced mechanical strength, wear resistance stability, incompatibility with patients, etc. The effect of reduced lining thickness, extensive bony support
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Embodiment 1
[0030] A multi-layer shell-core composite structure artificial acetabular in the artificial hip joint composed of multi-layer shell-core composite structural parts, which is composed of high-purity ultra-fine alumina ceramic acetabular lining 1-1, alumina base (25vol% niobium) The metal-ceramic transition layer 1-2, the alumina-based (65vol% niobium) metal-ceramic transition layer 1-3 and the niobium porous metal acetabular shell layer 1-4 are composed of four parts, and the surface of the acetabular shell layer 1-4 is provided with Multi-start spiral relief (see image 3 ) or multi-head spiral dimples (see Figure 4 ) in two forms, which can be selected according to the requirements of use. The purity of the high-purity superfine aluminum oxide powder is greater than 99.9 wt%, and the particle size is 0.5-10 μm; the purity of the niobium metal powder is greater than 99.8 wt%, and the particle size is 0.5-20 μm. The high-purity ultrafine alumina ceramic acetabular lining lay...
Embodiment 2
[0032] A multi-layer shell-core composite structure artificial acetabular in the artificial hip joint composed of multi-layer shell-core composite structural parts, which is composed of high-purity ultra-fine alumina ceramic acetabular lining 1-1, Ti6Al4V-60vol.%Al 2 o 3 Transition layer 1-2, Ti6Al4V-20vol.%Al 2 o 3 The transition layer 1-3 and the Ti6Al4V acetabular shell layer 1-4 are composed of four parts, and the surface of the acetabular shell layer 1-4 is provided with multi-headed spiral ribs ( Figure 5 ) or multi-head spiral grooves ( Figure 6 ) in two forms, which can be selected according to the requirements of use. The purity of the high-purity superfine alumina powder is greater than 99.9 wt%, and the particle size is 0.5-10 μm; the purity of the Ti6Al4V powder is greater than 99.0 wt%, and the particle size is 5-25 μm. The high-purity ultrafine alumina ceramic acetabular lining 1-1 and Ti6Al4V-60vol.%Al 2 o 3 Transition layer 1-2, Ti6Al4V-20vol.%Al 2 o ...
Embodiment 3
[0034] A multi-layer shell-core composite structure artificial femoral head in an artificial hip joint composed of multi-layer shell-core composite structural parts, which is made of high-purity ultrafine alumina ceramic spherical shell layer 2-1, ZrO 2 (3Y 2 o 3 )-80wt.%Al 2 o 3 Toughened ceramic transition layer 2-5 and ZrO 2 (3Y 2 o 3 )-20wt.%Al 2 o 3 The toughened ceramic inner core consists of 2-2 three parts. The purity of high-purity ultra-fine alumina powder is greater than 99.9wt%, and the particle size is 0.5-10 μm; ZrO 2 The purity of the powder is greater than 99.8 wt%, and the particle size is 0.5-10 μm. The high-purity ultrafine alumina ceramic spherical shell layer 2-1, ZrO 2 (3Y 2 o 3 )-80wt.%Al 2 o 3 Toughened ceramic transition layer 2-5 and ZrO 2 (3Y 2 o 3 )-20wt.%Al 2 o 3 The toughened ceramic inner core 2-2 is injected layer by layer into one by multi-material powder co-injection technology. The specific multi-layer shell core structure ...
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