Devices, systems, and methods for retrieval of material from vessel lumens

A clot retrieval device for removing a clot from a blood vessel, the device comprising:

• a tubular scaffold comprising a plurality of struts interconnected at apices and defining a plurality of open cells, wherein:
• the scaffold is configured to transition between a delivery state and an expanded state,
• in the delivery state the scaffold defines a first diameter around the longitudinal axis of the tubular scaffold, and
• in the expanded state the scaffold defines a lumen and a second diameter around the longitudinal axis of the tubular scaffold, larger than the first diameter, and
• a webbing assembly coupled to the tubular scaffold and comprising a plurality of filaments, each filament of the plurality of filaments extending between respective ends, wherein each of the ends is coupled to one of the plurality of struts or one of the apices, or both, wherein:
• in the expanded state, each of the filaments span the lumen, wherein the ends of the filaments lie at a same axial location along the longitudinal axis, and
• the scaffold and the webbing assembly are configured to be advanced distally in the delivery state within a catheter through the clot, deployed distal of the clot out an end of the catheter allowing the scaffold to transition from the delivery state toward the expanded state, and with the scaffold in the expanded state withdrawn proximally to remove the clot by both:
• engagement of peripheral portions of the clot, positioned within the open cells, with the plurality of struts and apices and
• engagement of central portions of the clot, positioned within the lumen, with the webbing assembly.