Chemically based vascular occlusion device deployment with gripping feature
First Claim
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1. A vascular occlusion device deployment system, comprising:
- a vascular occlusion device having a protruding portion;
a deployment unit comprising a pusher having a proximal end portion and a distal end portion;
an expandable gripper located at the distal end portion of the pusher, said gripper including an outwardly expandable gripping element for gripping the protruding portion of the vascular occlusion device;
a dispensing tube adapted to accommodate a first reactant separate from a second reactant;
an expandable reaction chamber located within said gripper, said expandable reaction chamber having an expandable interior cavity accessible through an opening, said dispensing tube being fluid in communication with said opening into the expandable reaction chamber; and
said chamber expands upon a reaction of at least said first reactant and said second reactant within said closed interior cavity of said chamber whereby the expansion of the chamber causes the gripper to outwardly expand, releasing the protruding portion of the vascular occlusion device.
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Abstract
A vascular occlusion device deployment system for placing an occlusion device at a preselected site within the vasculature of a patient. The deployment system employs a pusher including a gripper located at the distal end of the pusher to releasably retain a vascular occlusion device. The gripper is expanded by an expandable chemical reaction chamber so that the gripper releases the vascular occlusion device, thereby deploying the vascular occlusion device.
52 Citations
21 Claims
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1. A vascular occlusion device deployment system, comprising:
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a vascular occlusion device having a protruding portion; a deployment unit comprising a pusher having a proximal end portion and a distal end portion; an expandable gripper located at the distal end portion of the pusher, said gripper including an outwardly expandable gripping element for gripping the protruding portion of the vascular occlusion device; a dispensing tube adapted to accommodate a first reactant separate from a second reactant; an expandable reaction chamber located within said gripper, said expandable reaction chamber having an expandable interior cavity accessible through an opening, said dispensing tube being fluid in communication with said opening into the expandable reaction chamber; and said chamber expands upon a reaction of at least said first reactant and said second reactant within said closed interior cavity of said chamber whereby the expansion of the chamber causes the gripper to outwardly expand, releasing the protruding portion of the vascular occlusion device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vascular occlusion device deployment system for deploying a vascular occlusion device at a preselected site within the vasculature of a patient, comprising:
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a deployment unit comprising a pusher having a proximal end portion and a distal end portion; an expandable gripper located at the distal end portion of the pusher, said gripper including an outwardly expandable gripping element for gripping a vascular occlusion device; an expandable reaction chamber located for engagement with said gripper, said reaction chamber having an expandable interior cavity that has a first volume and a second volume that is greater than said first volume; a first dispensing unit including a first reactant, said first dispensing unit opening into the expandable reaction chamber; a second dispensing unit including a second reactant, said second dispensing unit opening into the expandable reaction chamber; and said expandable reaction chamber receives the first reactant from said first dispensing unit and the second reactant from said second dispensing unit to produce a product within the expandable reaction chamber that has a volume larger than the combined volume of said first and second reactants prior to mixing, said larger volume of the product causing the expandable reaction chamber to expand outwardly to said second volume and cause the gripping element to expand outwardly for releasing the vascular occlusion device therefrom. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method for deployment of a vascular occlusion device at a preselected location within the vasculature of a patient, comprising:
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providing a deployment unit comprising a pusher member having a gripper located at a distal end of the pusher member, said gripper having an expandable gripper element for gripping a vascular occlusion device and an expandable reaction chamber disposed within said gripper; gripping a protruding portion of a vascular occlusion device with said gripper; guiding the vascular occlusion device to a preselected location with in the vasculature of a patient with said pusher; mixing at least a first reactant and a second reactant within the interior of the expandable reaction chamber to provide a product having a volume greater than the combined volume of the first and second reactants, said product expanding the expandable reaction chamber; and expanding the gripping elements under the force of the expanding reaction chamber, thereby releasing the protruding portion of the vascular occlusion device. - View Dependent Claims (19, 20, 21)
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Specification