Method of pulsatile neurovascular aspiration with telescoping catheter

A method of aspirating a vascular occlusion from a remote site, comprising the steps of:

• advancing a first elongate tubular body through a vascular access site and into a body vessel, the first elongate tubular body having a distal end;
• thereafter advancing a second tubular body distally such that the second tubular body extends beyond the first elongate tubular body distal end to reach the remote site, the second tubular body having a lumen and a length, the length of the second tubular body being shorter than a length of the first elongate tubular body, wherein advancing the second tubular body distally comprises:
• distally advancing a control wire, the control wire comprising a central lumen and a distal end, the distal end of the control wire being attached to and extending proximally from a proximal end of the second tubular body;
• aspirating a thrombus from the remote site into the lumen of the second tubular body by applying pulsatile vacuum to the first elongate tubular body;
• and
• advancing an agitator distally through the central lumen of the control wire such that a distal end of the agitator extends beyond the distal end of the control wire and is positioned within the lumen of the second tubular body, wherein the agitator extends beyond the distal end of the control wire and is positioned within the lumen of the second tubular body while applying the pulsatile vacuum such that the agitator is configured to agitate the thrombus and to facilitate the aspirating the thrombus through the lumen of the second tubular body during the application of pulsatile vacuum.