Vasectomy. Surgical Method of Contraception (sterilization) There are terminal and the permanant methods, which blocks the transport of gametes by preventing conception. They are two types Vasectomy In males a small portion of the vas deferens is removed or tied up through a small incision on the scrotum called vasectomy [image:4_image13.png] Tubectomy In females a small part of the Fallopian tube is removed or tied up through a small incision in the abdomen called tubectomy [image:4_image14.png]