Summary. Vasovasostomy was performed in rabbits that had been vasectomized or had the vas occluded by a tantalum clip for 6 or 15 months. Vasovasostomy restored fertility to 40–50% in vasectomized rabbits and 60–70% in the tantalum clip-occluded animals. Any changes that occurred due to vasectomy and tantalum clip occlusion (e.g. testicular weight, enzyme concentrations in the testis) returned to normal within 3–6 months of vasovasostomy. We suggest that vas occlusion with tantalum clips is a good method of surgical male sterilization and has a high success rate for restoration of fertility.
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