Neurovascular catheter extension segment

A neurovascular catheter extension comprising:

• an elongate flexible control wire, having a proximal end, a distal end, and a side wall defining a control wire lumen extending through the control wire, the control wire defining a longitudinal axis extending from the proximal end to the distal end;
• and
• a tubular extension segment having a side wall defining a central lumen having a proximal opening and a distal opening, the tubular extension segment being carried by the distal end of the control wire such that the proximal opening of the central lumen is distal to the proximal end of the control wire;
• wherein the control wire lumen terminates in a distal opening on its distal end in fluid communication with the central lumen of the tubular extension segment such that a first axis parallel to the longitudinal axis passes through the control wire lumen and into the central lumen,
• wherein the control wire lumen extends distally beyond a proximal end of the tubular extension segment, a portion of the control wire side wall distal to the proximal end of the of the tubular extension segment being collinear with a portion of the tubular extension segment side wall along a second axis parallel to the longitudinal axis, and
• wherein the distal opening of the control wire lumen and the proximal opening of the central lumen of the tubular extension are positioned such that retraction of an agitator from the central lumen into the control wire lumen is configured to facilitate drawing a thrombus proximally through the proximal opening of the central lumen.

A neurovascular catheter extension segment, comprising:

• an elongate flexible control wire, having a proximal end, a distal end, and a side wall defining a control wire lumen extending through the control wire, the control wire defining a longitudinal axis extending from the proximal end to the distal end;
• and
• a tubular extension segment having a side wall defining a central lumen having a proximal opening and a distal opening, the tubular extension segment being carried by the distal end of the control wire;
• wherein the control wire lumen terminates in a distal opening on its distal end in fluid communication with the central lumen of the tubular extension segment, and
• wherein the distal opening of the control wire lumen and the proximal opening of the central lumen are positioned at lengths along the longitudinal axis such that at least a portion of the distal opening of the control wire lumen and at least a portion of the proximal opening of the central lumen are positioned at a common length along the longitudinal axis.

A neurovascular catheter extension segment, comprising:

• an elongate flexible control wire, having a proximal end, a distal end, and a side wall defining a control wire lumen extending through the control wire, the control wire defining a longitudinal axis extending from the proximal end to the distal end;
• a tubular extension segment having a side wall defining a central lumen having a proximal opening and a distal opening, the tubular extension segment being carried by the distal end of the control wire, wherein the control wire lumen terminates in a distal opening on its distal end in fluid communication with the central lumen of the tubular extension segment;
• and
• an agitator having a distal end configured to pass through a proximal opening of the control wire lumen and through the distal opening of the control wire lumen into the central lumen of the tubular extension segment,
• wherein the distal end of the agitator is configured to self-expand to a diameter substantially equal to an inner diameter of the central lumen upon exiting the distal opening of the control wire lumen, and
• wherein rotation of the self-expanded agitator within the central lumen adjacent the proximal opening of the central lumen is configured to facilitate drawing a thrombus trapped within the central lumen through the proximal opening of the central lumen.