A kind of absorbable reinforced bone implant material and its preparation method
A technology of bone implants and polylactic acid, which is applied in drug delivery, pharmaceutical formulations, prostheses, etc., can solve the problems of poor recovery effect, poor corrosion resistance, and insufficient support strength of patients, so as to promote absorbability , Function recovery is good, and the effect of reducing corrosion in the body
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Embodiment 1
[0037] The preparation method of bone implant material is as follows:
[0038] 1) Prepare strontium salt, silver salt and selenium salt solution in advance, control the temperature to 30 ° C, stir and mix the strontium salt, silver salt and selenium salt solution with polylactic acid, heat up to 300 ° C and melt to obtain modified polylactic acid, cool down and cool ;
[0039] 2) Mix magnesium powder, aluminum powder, iron powder and zinc powder evenly, extrude and draw wire to form metal fibers, spray the modified polylactic acid obtained by the above steps on the surface of the metal fibers with a spray gun, and put the modified polylactic acid in an oven for 150 ℃ after spraying is completed. ℃ temperature controlled drying, cut into uniform fibers with a length of 1mm, for subsequent production and use.
Embodiment 2
[0041] The preparation method of bone implant material is as follows:
[0042]1) Prepare strontium salt, silver salt and selenium salt solution in advance, the mass percent concentration of all salt solutions is 30wt%, and the temperature is controlled to 30 ° C, and the strontium salt, silver salt and selenium salt solution are mixed with polylactic acid. The addition amount is 0.5wt% of polylactic acid, the addition amount of silver is 3wt% of polylactic acid, and the addition amount of selenium is 0.01wt% of polylactic acid, heated to 350 ℃ and melted to obtain modified polylactic acid, cooled and pulverized into particle size It is 100μm polylactic acid powder;
[0043] 2) Mix the magnesium powder, aluminum powder, iron powder and zinc powder evenly, extrude and draw wire to form metal fibers, spray the polylactic acid powder obtained by the above steps on the surface of the metal fibers with a spray gun, and the spray thickness is 3mm to ensure that the metal fibers are t...
Embodiment 3
[0045] The preparation method of bone implant material is as follows:
[0046] 1) Prepare strontium salt, silver salt and selenium salt solution in advance, the mass percent concentration of all salt solutions is 30wt%, and the temperature is controlled to 30 ° C, and the strontium salt, silver salt and selenium salt solution are mixed with polylactic acid. The addition amount is 5wt% of the polylactic acid, the addition amount of silver is 0.01wt% of the polylactic acid, and the addition amount of selenium is 5wt% of the polylactic acid. The modified polylactic acid is obtained by heating up to 350 ℃ and melting, cooling and pulverizing to a particle size of 500μm polylactic acid powder;
[0047] 2) Mix magnesium powder, aluminum powder, iron powder and zinc powder evenly, extrude and draw wire to form metal fibers, spray the polylactic acid obtained by the above steps on the surface of the metal fibers with a spray gun, and the spray thickness is 3 μm, and the quality of the...
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