A vial adaptor having a bottom part adapted to be attached to the head section of a medical vial or any type of vessel or device that has a head section similar to that of the head of a standard medicine vial. The top part has numerous components. The apparatus also has a first locking mechanism; and a second locking mechanism. The first locking mechanism is adapted to lock a top part to the bottom part such that a tip of a spike cannot contact a stopper in the head section when the head section is being attached to the bottom part and to release the top part from the bottom part after the bottom part has been attached to the head section. The second locking mechanism is adapted to allow, after the bottom part has been attached to the head section, the spike to penetrate the stopper in the head section and to irremovably lock the top part to the bottom part.