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Chemically based vascular occlusion device deployment

  • US 7,553,321 B2
  • Filed: 03/31/2006
  • Issued: 06/30/2009
  • Est. Priority Date: 03/31/2006
  • Status: Expired due to Fees
First Claim
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1. 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.

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