Patent ID: 7553321

Claim:
A vascular occlusion deployment system, comprising: a deployment unit comprising a pusher having a proximal end portion and a distal end portion with a distal opening, the distal opening sized and shaped to temporarily accept a protruding portion of a vascular occlusion device; an expandable reaction chamber located within the pusher proximal the distal opening of the pusher, the expandable chamber expandable in a direction toward the distal end portion of the pusher; said reaction chamber including a first sub-chamber and a second sub-chamber separated by a heat dissolvable membrane; a first reactant located within the first sub-chamber and a second reactant located within the second sub-chamber; a heating generating system capable of dissolving the heat dissolvable element to allow said first reactant and second reactant to mix, forming a product that expands in the direction of the distal opening; and said expanding product applying a force to the reaction chamber causing a portion of the reaction chamber to expand in the direction of the distal opening, said portion of the reaction chamber capable of contacting a protruding portion of a vascular occlusion device within the distal opening and pushing the protruding portion out of the distal opening, thereby deploying the vascular occlusion device.