Porous compound material capable of implanting to human body to develop and its preparation method
A technology of composite materials and inorganic materials, applied in the field of medical materials, can solve problems such as inability to develop images, low density, inability to express shape changes and displacements, etc., and achieve the effects of shortened recovery period, low cost, and simple manufacturing process
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Embodiment 1
[0019] The 1.5mm-thick sheet-shaped porous composite implant material with a pore size of 100-200μm and a porosity of 35% adopts the method of internally compounding developable inorganic materials.
[0020] Preparation raw materials: hydroxyapatite (or beta tricalcium phosphate, calcium carbonate and calcium sulfate, barium sulfate), silicone rubber
[0021] Preparation:
[0022] a, putting 85 parts by weight of silicone rubber into an internal mixer and heating to a molten state;
[0023] b, fully stirring and mixing 15 parts by weight of hydroxyapatite powder with a particle size of 100nm and silicone rubber;
[0024] c. Compress the mixture in step b to make spherical particles with an average particle size of 0.15 mm, and then sinter to make a 1.5 mm thick sheet-shaped porous composite implant with a pore size of 100-200 μm and a porosity of 35%. Material.
[0025] This material can be used in parts that require greater plasticity, such as the orbit and maxilla, and th...
Embodiment 2
[0028] The pore size is 300-400 μ m, and the porosity is 50%, and the surface is compression-molded and compounded with β-tricalcium phosphate sheet-shaped porous medical polymer material composite material.
[0029] Raw materials: hydroxyapatite (or β-tricalcium phosphate), ultra-high molecular weight polyethylene (or high-density polyethylene)
[0030] Preparation:
[0031] a, 70 parts by weight of ultra-high molecular weight polyethylene is first made into a 2mm thick porous sheet with a pore diameter of 300 to 400 μm and a porosity of 50%,
[0032] b. Then 30 parts by weight of hydroxyapatite particles with a particle size of about 500nm were subjected to thermoplastic compounding at 140° C. and a pressure of 10 MPa for 10 minutes to prepare a composite implant material containing β-tricalcium phosphate porous medical polymer material.
[0033] The material can be used in places with moderate plasticity, such as the skull, and it can be clearly visualized in X-ray fluoros...
Embodiment 3
[0036] The spherical porous medical composite material with a pore size of 400-500 μm, a porosity of 65%, and a diameter of φ20 mm adopts the method of chemical deposition on the surface of inorganic materials and medical polymer materials and simultaneous compounding inside.
[0037] Raw materials: high-density polyethylene, hydroxyapatite, calcium nitrate, diammonium hydrogen phosphate
[0038] Preparation:
[0039] a, 45 parts by weight of hydroxyapatite powder with a particle size of 50 nm and high-density polyethylene with a weight of about 50 parts by weight are fully mixed in the molten state of high-density polyethylene,
[0040] b. The mixture in a is made into spherical particles with an average particle diameter of 0.5 mm, and then made into a sphere with a pore size of 400-500 μm and a porosity of 65% and a diameter of φ20 mm.
[0041] c. Immerse the sphere in a 0.05mol-1mol calcium nitrate solution, and react with an equivalent or slightly excessive amount of dia...
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