The No-Needle injector or ‘hypospray’ delivers a fine jet of Marcaine freezing right through the scrotal skin into the vas and surrounding tissues. The sensation is like a mild snap of an elastic band against the skin. It requires only 1/10th the volume of anesthetic compared with the old needle method so there is less tissue distension and less risk of bleeding. Also, it is a proven medical fact that men prefer to have needles kept as far away from their scrotums as possible!
The “No-Scalpel” part refers to the technique of getting to the vas at the front of the scrotum using two small surgical instruments developed in China in 1974. There are no knives, scalpels, lasers or other hi-tech gizmos involved. It is “minimally invasive” so there is less trauma to the tissues. The single tiny hole created in the skin is 2 to 3 mm long and serves for access to both right and left vas tubes.