An implantable aneurysm clip including a first arm and an opposed second arm. The first and second arms having corresponding opposed first and second clamping surfaces facing each other, and the first and second arms are movable relative to each other. The first and second clamping surfaces are shiftable between a first, preselected, open resting position in which the first and second clamping surfaces are separated by a first distance and a second open position wherein the first and second clamping surfaces are separated by a second distance. The second distance is greater than the first distance and the first and second clamping surfaces are biased toward the first position by a biasing force.