CPC A61B 17/221 (2013.01) [A61B 2017/00862 (2013.01); A61B 2017/00867 (2013.01); A61B 2017/22038 (2013.01); A61B 2017/22079 (2013.01); A61B 2017/2212 (2013.01); A61B 2017/2215 (2013.01); A61B 2017/2217 (2013.01); A61F 2002/018 (2013.01); A61F 2230/0067 (2013.01); A61F 2230/0091 (2013.01); A61F 2250/0039 (2013.01)] | 14 Claims |
1. An apparatus for conducting a thrombectomy in a blood vessel of a patient comprising:
an expandable basket designed for positioning in the blood vessel on a distal side of or adjacent to the thrombus, the expandable basket configured to expand once it is in position on the distal side of or adjacent to the thrombus, the expandable basket made from a superelastic or a shape memory material, having a mesh pattern that can retain the thrombus;
a guide wire connected to the expandable basket for positioning the expandable basket in position on the distal side of or adjacent to the thrombus and for removing the expandable basket from the blood vessel; and
an expandable funnel designed for positioning in the blood vessel on a proximal side of the thrombus, the expandable funnel having a cylindrical section, the expandable funnel configured to expand once it is in position on the proximal side of the thrombus with an open side of the expandable funnel facing the thrombus, the cylindrical section being designed to engage the wall of the blood vessel, the expandable funnel made from a superelastic or shape memory material, having a mesh pattern that can retain the thrombus, the apparatus having a deployed state wherein the expandable basket and expandable funnel expand and engage an internal wall of the blood vessel and a delivery state wherein the expandable basket and expandable funnel have a contracted configuration to allow insertion in the blood vessel within a delivery sheath, the expandable basket being designed to fit within the cylindrical section of the expandable funnel when the expandable basket is advanced towards the expandable funnel by the guide wire to remove the thrombus, the expandable funnel designed to encircle and constrain the thrombus during a removal process as it is withdrawn into an aspiration catheter, the apparatus having the ability to change shape and diameter as it is withdrawn into the aspiration catheter;
wherein the expandable basket is a plug having a first conical end located on a first end and a second conical end located on a second end, wherein spiral sections extend between the first conical end and the second conical end, the spiral sections forming a cylindrical band that has a diameter substantially the same as a diameter of the first and second conical ends, and a reinforcing member extending parallel to a longitudinal axis of the plug from the first conical end to the spiral sections and from the second conical end to the spiral sections, wherein the reinforcing member has a height that is approximately one third of the diameter of the first and second conical ends, wherein openings are positioned between the spiral sections, the openings being disposed to allow pieces from the thrombus to pass through the openings and into an interior of the plug.
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