Emboli capture device

An emboli capture device for capturing emboli in a vessel, comprising:

• an elongate shaft member including a proximal filter wire portion, an intermediate coil wire portion, and a distal filter wire portion, continuously provided in order toward a distal end thereof;
• a proximal filter portion provided on the proximal filter wire portion, and having a contracted configuration for being delivered to a site within the vessel and an expanded configuration for capturing emboli within the vessel;
• and
• a distal filter portion provided on the distal filter wire portion, and having a contracted configuration for being delivered to a site within the vessel and an expanded configuration for capturing emboli within the vessel,
• wherein the proximal filter portion includes a proximal filter body having an inlet opening to be opened toward a distal side of the proximal filter portion for capturing emboli within the vessel in the expanded configuration, and the distal filter portion includes a distal filter body having an inlet opening to be opened toward a proximal side of the distal filter portion for capturing emboli within the vessel in the expanded configuration,
• the intermediate coil wire portion has flexibility higher than the proximal filter wire portion and the distal filter wire portion,
• the proximal filter body has a mesh structure comprising wires having elasticity or a shape memory property, the wires being tied at a proximal end of the proximal filter body into a proximal tie portion which is fixed to the proximal filter wire portion, and the wires, forming a support portion of the proximal filter body, being tied at a distal end of the proximal filter body into a distal tie portion which is moveable along the proximal filter wire portion so that the proximal filter body is in the contracted configuration when the distal tie portion moves toward a distal side of the proximal filter body, and is in the expanded configuration when the distal tie portion moves toward a proximal side of the proximal filter body,
• the distal filter body has a mesh structure comprising wires having elasticity or a shape memory property, the wires, forming a support portion of the distal filter body, being tied at a proximal end of the distal filter body into a proximal tie portion and the wires being tied at a distal end of the distal filter body into a distal tie portion, the proximal tie portion and the distal tie portion being moveable along the distal filter wire portion so that the distal filter body is in the contracted configuration when the proximal tie portion and the distal tie portion move apart from each other, and is in the expanded configuration when the proximal tie portion and the distal tie portion move closer to each other, and
• the distal filter wire portion is provided with a stopper member to limit movement of the proximal tie portion of the distal filter body toward a distal side of the distal filter body and movement of the distal tie portion toward a proximal side of the distal filter body along the distal filter wire portion.