A type of early intrauterine device (IUD) also known as a cervicouterine device or pessary. Curved disk with long coil stem attached to plate of disk. Coil opens into a wishbone shape with two arms. Arms are held together during insertion.
Science History Institute. Gold-Plated Stem Pessary (Intrauterine Device). Photograph, 2018. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/jq085k79n.
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