A vasectomy is a male sterilization or a permanent contraception. During the procedure, the male vasa deferentia are cut and tied or sealed so as to prevent sperm from entering into the urethra and thereby prevent fertilization of a female through sexual intercourse.There are several methods by which a surgeon might complete a vasectomy procedure, all of which occlude (i.e., "seal") at least one side of each vas deferens. To help reduce anxiety and increase patient comfort, men who have an aversion to needles may consider a "no-needle" application of anesthesia while the "no-scalpel" or "open-ended" techniques help to accelerate recovery times and increase the chance of healthy recovery.

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