A vasectomy is a surgical procedure for permanent male birth control. Every year, over half a million men in the United States undergo a vasectomy, making it the most common urological medical procedure in America. It is also a highly effective method of birth control. Typically performed as an outpatient procedure, a vasectomy involves the cutting of the vas deferens (which supply sperm from the testicles to the penis). As with any surgical procedure, the process surrounding having a vasectomy can leave a patient with many questions. Being well informed and ready for your procedure goes a long way towards being comfortable with your decision and the process involved.