Abstract: This is a birth control device that prevents pregnancy for extended periods of time with the same degree of certainty as permanent sterilization: however, this sterilization is easily reversible when childbearing is desired. This device is implanted through a medical procedure. It consists of two tubes that may be positioned either in a closed or open position and held there by a clip to either prevent or allow fertilization of the egg. Accessing this device to change from open to closed or vice versa requires a medical procedure.