ABSTRACT

PURPOSE: Validate an experimental, non-animal, model for vasectomy reversal training.

MATERIALS AND METHODS: The model consists in two artificial vas deferens, made of silicone tubes, coated with a white resin, measuring 10 cm in length, with internal and external diameters of 0.5 and 1.5 mm, respectively. The ducts are supported by a small box, composed through a 3D printer, made with polylactic acid,. The aim of the invention is simulate the surgical field of a vasovasostomy at the time when the vas deferens were isolated from the other structures of the cord, during vasovasostomy. For validation we sought to verify the acquisition of microsurgery skills with its use, during a training course involving 5 residents of urology. Along the training sessions, the speed of microsurgical sutures and the performance quantification through a checklist were analyzed. The collected data were submitted to statistical analysis through the program BioEstat © 5.4.

RESULTS: During the course, the mean time wich microsurgical sutures were performed improved considerably, reaching a plateau from the third day of training (p = 0.0365). Regarding the checklist, a significant improvement in the score of each participantt it were verified, reaching a plateau in the fourth day (p = 0.0035). CONCLUSION: The developed model promoted a gain in microsurgery skills, and it is appropriate for vasectomy reversal training.