I've heard there is a procedure for a reversible vasectomy where the tubes are clamped rather than cut, allowing for a future reversal. Dear May want kids in the future, Severing the vas deferens, the tube which carries sperm to the semen, remains the most effective method of birth control men can practice. Clamps have certainly been experimented with as an alternative to severing the vas. While this could provide the option of a successful reversal in the future, it has not yet been perfected.
Reversal is difficult.
A doctor invented this technique in China, where it has been widely used for some time now. It was introduced in the U.S. in 1988. This particular procedure has gained popularity because it does not require stitches, and there is much less post-surgical pain associated with the operation. Regardless of how the vas is severed, reversing a vasectomy is always difficult. Success rates, in terms of pregnancy rates, tend to be very low.