Bank H L, Williamson H O
Fertil Steril. 1983 Sep;40(3):334-9. doi: 10.1016/s0015-0282(16)47296-1.
Scanning electron micrographs of Dalkon Shield tails removed from asymptomatic patients show a variety of microbes and debris throughout their entire length. Apparently, even in undamaged tails, bacterial flora thrive in the protein-rich environment within the multifilament tail. The presence of microbes in the portion of the tail beyond the double knot indicates that an alternative mechanism of microbial transport can occur. Since transient endometritis often occurs immediately after insertion of intrauterine devices, microbes may come in contact with both exposed ends of the multifilament tail and be drawn into the tail by capillary action from the uterine environment down the tail toward the double knot as well as upward from the vagina. Such microorganisms could serve as an inoculum for infection.
从无症状患者体内取出的达康盾尾丝的扫描电子显微镜图像显示，在其整个长度上都存在各种微生物和碎片。显然，即使在未受损的尾丝中，细菌菌群也能在多丝尾丝内富含蛋白质的环境中大量繁殖。在双结之外的尾丝部分存在微生物，这表明可能存在微生物传播的另一种机制。由于短暂性子宫内膜炎常在宫内节育器插入后立即发生，微生物可能会接触到多丝尾丝的两个暴露端，并通过毛细作用从子宫环境沿着尾丝向下朝向双结以及从阴道向上被吸入尾丝。这些微生物可能成为感染的接种物。
