Porous, controllable and low-modulus bone defect repair bracket and preparation method thereof
A low modulus, bone defect technology, applied in medical science, electrolytic inorganic material coating, prosthesis, etc., can solve problems such as coating inhomogeneity, achieve good uniformity, solve interface stress problems, and good bone ingrowth effect of ability
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Embodiment 1
[0029] 1. Preparation of titanium alloy scaffold with porosity and controllable low modulus
[0030] Use Unigraphics software to design and build a three-dimensional graphic, the graphic volume is 15mm×15mm×15mm cylinder, input to the selective laser sintering equipment, set a specific laser wavelength, under the protection of argon, use CO 2 The laser beam selectively sinters the Ti6A14V powder (particle diameter is 26μm-53μm). First, the solid part of the powder is sintered, continuously circulated, layer by layer, and the stress is released by wire cutting and heat treatment in the later stage. Finally, ultrasonic cleaning is carried out to remove The powder remains, resulting in a porous scaffold consistent with the desired shape. Each microstructure inside the prepared porous scaffold is a rhombic regular dodecahedron, the diameter of the pore column is 300 μm, the compressive strength is 84 MPa, and the elastic modulus is 3.5 GPa.
[0031] 2. Preparation of Bioactive Co...
Embodiment 2
[0036] 1. Preparation of titanium alloy scaffold with porosity and controllable low modulus
[0037] Use Unigraphics software to design and build a three-dimensional graphic, the graphic volume is 15mm×15mm×15mm cylinder, input to the selective laser sintering equipment, set a specific laser wavelength, under the protection of argon, use CO 2 The laser beam selectively sinters the Ti6A14V powder (particle diameter is 26μm-53μm). First, the solid part of the powder is sintered, continuously circulated, layer by layer, and the stress is released by wire cutting and heat treatment in the later stage. Finally, ultrasonic cleaning is carried out to remove Residual powder. A porous scaffold consistent with the desired shape is obtained. Each microstructure inside the prepared porous scaffold is a rhombic regular dodecahedron, the diameter of the pore column is 300 μm, the compressive strength is 84 MPa, and the elastic modulus is 3.5 GPa.
[0038] 2. Preparation of Bioactive Coati...
Embodiment 3
[0045] 1. Preparation of titanium alloy scaffold with porosity and controllable low modulus
[0046] Use Unigraphics software to design and build a three-dimensional graphic, the graphic volume is 15mm×15mm×15mm cylinder, input to the selective laser sintering equipment, set a specific laser wavelength, under the protection of argon, use CO 2 The laser beam selectively sinters the Ti6A14V powder (particle diameter is 26μm-53μm). First, the solid part of the powder is sintered, continuously circulated, layer by layer, and the stress is released by wire cutting and heat treatment in the later stage. Finally, ultrasonic cleaning is carried out to remove Residual powder. A porous scaffold consistent with the desired shape is obtained. Each microstructure inside the prepared porous scaffold is a rhombic regular dodecahedron, the diameter of the pore column is 300 μm, the compressive strength is 84 MPa, and the elastic modulus is 3.5 GPa.
[0047] 2. Preparation of Bioactive Coati...
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