[Mathew's clip, an alternative for removal of IUDs with no visible threads. Experience of Family Planning Service]. / Pinza de Mathew, una alternativa en retiro de dispositivos intrauterinos de hilos no visibles. Experiencia de un servicio de planificación familiar.

BACKGROUND: The absence of IUD visible threads in the cervix is a complication of the intrauterine device. The IUD withdrawal in these cases was performed with Novak cannula or curettage instrumented under anesthesia and surgery. Its extraction with Mathew clip is an alternative. OBJECTIVE: To demostrate the effectiveness of the Mathew's clip as an alternatively for removal of intrauterine devices not visible threads. MATERIAL AND METHODS: A cross-sectional, retrospective, descriptive study was conducted in from February 2012 to July 2014 at the Family Planning Service of Gynecology and Obstetrics of the General Hospital of Mexico "Dr. Eduardo Liceaga ". RESULTS: 106 patients (54%) had no visible threads; in 84 patients (81.5 %) it was removed with Novak, cannula; in 19 patients (18.4%) in which it was not possible, the removal was done with a Mathew's clip. DISCUSSION: Mathew' clip is an alternative in cases where it was not possible to remove the IUD with Novak cannula, 19 IUDs no visible threads were removed. CONCLUSIONS. Mathew clip for removal of intrauterine devices with no visible threads means less risk to the patient and a decrease in institutional costs.