Abstract: A stabilizer for use with a delivery system is provided. The stabilizer receives a delivery system, such as a handle portion, and prevents unwanted movement of the delivery system during a medical procedure. The stabilizer desirably includes an elongate rail that is adapted to be secured to a base or table. A rail dock is adapted to releasably couple to the delivery system. The rail dock is slidably mounted along an upper surface of the rail and includes a brake assembly. The brake assembly preferably includes a toggle member with at least one push button, wherein actuation of the push button may release or lock the brake assembly. Components of the stabilizer are provided for allowing the stabilizer to be used with different delivery systems and the stabilizer is capable of being secured to different sized tables.