Occlusion device and methods of using the same

An occlusion device for occluding a body vessel comprising:

• a proximal end,
• a distal end spaced from the proximal end along a longitudinal axis,
• an occluding member disposed between the proximal end and distal end, the occluding member moveable between a radially-outwardly expanded configuration and a contracted configuration,
• a first biasing member disposed within the occluding member and having a first end adjoined to the proximal end of the device,
• a second biasing member disposed within the occluding member and having a first end adjoined to the distal end of the device, the second biasing member configured to releasably engage the first biasing member, such that in a first configuration the first and second biasing members are engaged and in a second configuration the first and second biasing members are disengaged.