Intrauterine Contraception with the Copper 7: Evaluation after Two YearsBr Med J 1974; 3 doi: https://doi.org/10.1136/bmj.3.5928.447 (Published 17 August 1974) Cite this as: Br Med J 1974;3:447
- John Newton,
- Julian Elias,
- John McEwan,
- George Mann
From 1,156 insertions of the copper 7 contraceptive device with 15,044 women-months of use we conclude that it offers advantages in intrauterine contraception. Continuity is improved for all users. It is a useful method for those who have not been pregnant and as an exchange device for patients having problems with other intrauterine devices or contraceptive methods. These advantages must be set against the necessity of replacing the copper 7 after a limited life span. In no cases in our series did cervical cytological examination show anything abnormal, and a 98·1% follow-up was achieved.