A medical device assembly having a quick release mechanism reversibly engaged with a medical device and a method used by an operator to deploy said medical device at a targeted site in a body vessel is provided. The quick release mechanism generally comprises an inner core wire and an outer coil having a proximal section and distal section. The inner core wire and the outer coil are coupled together proximate to their distal end with the outer coil having an enlarged overall thickness in its distal section. The medical device has an opening sized to receive and to detachably engage the distal section of the outer coil. The quick release mechanism having an engaged position in which the outer coil is securely holds the medical device and a detached position in which the outer coil and medical device are substantially unengaged. The operator causes the quick release mechanism to move from the engaged position to the detached position by moving the inner core wire and outer coil in opposite directions.
