Vasectomy

Surgical procedure for male sterilization

Vasectomy is an elective surgical procedure that results in male sterilization, often as a means of permanent contraception. During the procedure, the vasa deferentia are cut and tied or sealed so as to prevent sperm from entering into the urethra and thereby prevent fertilization of ova through sexual intercourse. Vasectomies are usually performed in a physician's office, medical clinic, or, when performed on a non-human animal, in a veterinary clinic.

From Wikipedia, under CC BY-SA. More on occurri.