Vasectomy reversal can be accomplished via one of two surgical procedures. The first is called vasovasostomy, and involves reconnecting the two ends of the severed vas deferens (the tube that carries sperm). The second is called vasoepididymostomy and involves connecting the vas deferens directly to the epididymis, which is the coiled tube at the back of each testicle. Typically a regional anesthetic is used to keep the patient comfortable during this outpatient surgery. In past studies, the vast majority of men who had a vasovasostomy procedure to reverse a vasectomy were able to have their fertility restored, while a somewhat smaller portion of those who received a vasoepididymostomy had such success.