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Zhonghua Nan Ke Xue. 2013 Apr;19(4):321-3.

[Long-term effect and safety of non-occlusive intra-vas device for male contraception].

[Article in Chinese]

Author information

  • 1Henan Province Research Institute for Population and Family Planning, Zhengzhou, Henan 450002, China.



To assess the long-term effect and safety of non-occlusive intra-vas device (IVD) for male contraception in comparison with no-scalpel vasectomy (NSV).


We conducted a follow-up investigation on 100 males who had received IVD and another 50 who had undergone NSV 6 years before. We compared the rates of sperm absence and complications between the two groups.


Follow-up visits were successfully performed on 95 males (95%) of the IVD group and 44 (88%) of the NSV group. Pregnancy was not found in any of the cases. Spermatozoa (> or = 5 x 10(6)/ml) were not detected in 87 cases (91.58%) in the IVD group and in 44 cases (95.45%) in the NSV group, with no significant differences between the two groups (P > 0.05). The rate of postoperative complications in the IVD group (11.58%) showed no significant difference from that of the NSV group (4.55%) (P > 0.05).


IVD is as effective and safe as NSV for male contraception.

[PubMed - indexed for MEDLINE]
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