Intrauterine device of composite material
A technology of intrauterine contraceptives and composite materials, applied in the field of intrauterine contraceptives, can solve the problems of uncontrollable copper ion release rate, rough metal copper surface, low effective utilization rate, etc., achieve excellent contraceptive effect and overcome surface roughness , the effect of improving the effective utilization rate
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Embodiment 1
[0032] The outer arc radius R of the arc arms 11 and 11' is prepared by using the original powder mixture of the low-density polyethylene-based composite material masterbatch with a copper particle content of 50.0wt.%. 1 =7.0mm, inner arc radius R 2 =5.5mm, the center O of the cross section of the arc arm 11 2 The arc radius of the arc is 0.5×(R 1 +R 2 )=6.25mm, the radius r of the sphere 12 at the outer end of the arc arm 11 1 =1.0mm, center O of sphere 12 3 The center O of the arc with the arc arm 1 The link L between 1 and the center O of the arc 1 Where the horizontal line L 2 The included angle α=135 degrees, the radius r of the hemisphere 15 at the bottom end of the trailing arm 13 2 =1.0mm, the total length L of the longitudinal arm 13 and the hemisphere 15 3 =19mm, diameter 2r of the tail wire hole 14 3 = 0.10mm composite intrauterine device. That is, the diameter of the arc arm of the composite IUD (R 1 -R 2 )=1.5mm, trailing arm diameter 2r 2 =2.0mm, to...
Embodiment 2-19
[0034] All were prepared by a method similar to that of Example 1, wherein the composition of the prepared composite IUD was shown in Table 1, and the size parameters of the prepared composite IUD were shown in Table 2.
[0035] Reality
[0036]
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