Related Experiment Video
Updated: Jul 12, 2026

12:47
Nuclear Magnetic Resonance Spectroscopy for the Identification of Multiple Phosphorylations of Intrinsically Disordered Proteins
Published on: December 27, 2016
A decade of experience with TCu200.
H P Bhattoa1, S Ganacharya, I Batár
1Department of Obstetrics and Gynecology, Medical and Health Science Center, University of Debrecen, Hungary.
Summary
The TCu200 intrauterine device (IUD) demonstrates strong performance over ten years, with low pregnancy and expulsion rates. This long-term study confirms the TCu200 IUD
Area of Science:
- Reproductive Health
- Medical Device Technology
- Clinical Gynecology
Background:
- Intrauterine devices (IUDs) are a common form of reversible contraception.
- Long-term data on the performance of specific IUD models is crucial for clinical decision-making.
- The TCu200 IUD has been in use, necessitating comprehensive evaluation of its extended efficacy and safety.
Purpose of the Study:
- To evaluate the ten-year performance of the TCu200 intrauterine device (IUD).
- To assess cumulative and yearly termination and continuation rates for the TCu200 IUD.
- To determine the long-term safety and efficacy profile of the TCu200 IUD.
Main Methods:
- Life-table analysis was used to calculate termination and continuation rates.
- Data from 2766 TCu200 IUD insertions over a ten-year period were analyzed.
- Patient follow-up included monitoring for pregnancy, expulsion, bleeding, pain, and removal for medical reasons.
Main Results:
- Cumulative ten-year rates: pregnancy (10.2%), expulsion (6.3%), bleeding/pain (32.3%), and medical removal (19.4%).
- First-year annual rates: pregnancy (1.8%), expulsion (2.4%), bleeding/pain (4.2%), medical removal (2.0%).
- Tenth-year annual rates: pregnancy (0.6%), expulsion (0.1%), bleeding/pain (4.4%), medical removal (2.8%).
- Continuation rates: 89.1% at 12 months and 33.2% at 10 years.
Conclusions:
- The TCu200 IUD exhibits good overall performance and a longer lifespan than initially anticipated.
- The device demonstrates sustained effectiveness and acceptable safety over a decade of use.
- These findings support the TCu200 IUD as a viable long-term contraceptive option.

