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Related Experiment Videos

Scanning electron microscopy of the multifilament IUD string.

D K Roberts, D V Horbelt, N J Walker

    Contraception
    |March 1, 1984
    PubMed
    Summary

    Deterioration of the Dalkon Shield intrauterine device (IUD) sheath was observed in all devices studied. This sheath damage, particularly at the attachment knot, may increase the risk of pelvic infection.

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    Area of Science:

    • Reproductive health
    • Biomaterials science
    • Medical device analysis

    Background:

    • The Dalkon Shield intrauterine device (IUD) was a widely used contraceptive with a history of complications.
    • Previous concerns existed regarding IUD safety and potential links to pelvic inflammatory disease.

    Purpose of the Study:

    • To investigate the structural integrity of multifilament strings from Dalkon Shield IUDs.
    • To identify areas of material degradation on retrieved IUDs.
    • To explore the potential relationship between IUD deterioration and pelvic infection risk.

    Main Methods:

    • Scanning electron microscopy (SEM) was employed to examine fifteen Dalkon Shield IUDs.
    • IUDs were sourced from patients following their removal.
    • Microscopic analysis focused on the sheath material and its condition.
    Keywords:
    Bacterial And Fungal DiseasesContraceptionContraceptive Methods--analysisDiseasesFamily PlanningInfectionsIudIud, Unmedicated--analysisPelvic Infections

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    Main Results:

    • All fifteen examined Dalkon Shield IUDs exhibited significant deterioration of the outer sheath.
    • The most pronounced sheath damage was consistently found at the attachment knot, typically located within the uterus.
    • Sheath deterioration was also observed when the IUD was embedded in the uterine wall or had migrated intraperitoneally.

    Conclusions:

    • The multifilament strings of the Dalkon Shield IUD are prone to sheath degradation.
    • This structural deterioration, especially at the attachment knot, may create a pathway for microbial contamination.
    • IUD sheath deterioration is a potential contributing factor to the increased risk of pelvic infection associated with the Dalkon Shield.