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  • Title: Six years' experience with the T Cu 220C intrauterine contraceptive device.
    Author: Van Der Pas H, Thiery M, Delbeke L, Van Kets H, Haspels A.
    Journal: Contracept Deliv Syst; 1980 Jan; 1(1):1-10. PubMed ID: 12261713.
    Abstract:
    A 6-year long evaluation of interval insertion of the T Cu 220C has proven the efficacy, safety, and acceptability of a multisleeved copper-T IUD model. A sample of 947 insertions covers 37,669 woman months of experience. Gross cumulative event rates at 6 years were: pregnancy, 5.6; expulsions, 6.3; removals for bleeding/pain and other medical reasons, 11.4 and 5.2, respectively. Age, parity, and method of insertion influence the performance of the T Cu 220C. The T Cu 220C is an experimental model designed by Tatum to increase the efficacy by delivering copper ions higher up in the uterine cavity and extend the effective life span by using sleeves instead of filamental copper. The device has a T-shaped skeleton of polyethylene into which 20% barium sulfate is incorporated. The total amount of copper is ca. 503 mg and the total surface area ca. 220 mm squared. The IUDs were inserted during or immediately after menstruation, not earlier than 6 weeks after delivery or abortion. Gynecologists performed all insertions using either a push-in or a retraction technique.
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