Abstract: Objective： To observe the tubal reversal rate and re-pregnancy function after the micro contraceptive device coating PTFE was taken out. It is useful for the clinical application of this reversible contraceptive device. Methods：This recoverable fallopian tube contraceptive device was prepared using the PTFE spraying technique. Female rabbits were assigned randomly into two groups，the test group with 12 rabbits，and control group with 6 rabbits. The contraceptive devices were input in both oviducts in the test group. After 4 weeks，12 weeks，24 weeks of treatment，the contraceptive devices were removed from 4 rabbits. The hydrotubation was did，and then the re-pregnancy was tested. Results：PTFE spraying technique was simple and easy. This contraceptive device was smooth on surface. The hydrotubation test showed that there were 21 patency，2 through but no smooth，1 impatency in 24 fallopian tubes of the test group，with the patency rate 95.8%（23/24）. The re-pregnancy test showed that there were 11 pregnancy and 1 infertility，with the re-pregnancy rate 91.66%（11/12）. Conclusions：Fallopian tube recovered patency without synechia after the PTFE coating contraceptive device was removed. So this contraceptive device was safe and reliable，without adverse reaction.

Key words: Polytetrafluoroethylene, Contraceptive devices, Fallopian tubes, Pregn, Models, animal