Based on early research on contraceptive for men, University of North Carolina experts believe a blast of ultrasound to the testes can safely stop sperm production for six months.

The researchers explained that once the testis has stopped producing sperm and all sperm reserves have been depleted, the man will be temporarily infertile.

Lead researcher Dr James Tsuruta said the research could provide men with up to six months of reliable, low-cost, non-hormonal contraception from a single round of treatment.

Our long-term goal is to use ultrasound from therapeutic instruments that are commonly found in sports medicine or physical therapy clinics as an inexpensive, long-term, reversible male contraceptive suitable for use in developing to first world countries.

The researchers ultimately hope it could offer a new birth control option to couples throughout the world.

Their Grand Challenges Exploration Grant project aims at fine-tuning this technique for maximum effect and safety.