Thrombectomy devices and methods

A thrombectomy device comprising:

• a first catheter shaft defining a first lumen and comprising a first catheter shaft distal end;
• a second catheter shaft positioned within the first lumen, wherein an outflow path configured to direct fluid in a distal direction is defined between the first catheter shaft and the second catheter shaft, the second catheter shaft defining a second lumen and comprising a second catheter shaft distal end defining an inflow opening, wherein the first catheter shaft distal end defines an outflow opening positioned proximal to the inflow opening;
• a third catheter shaft positioned within the second lumen, the third catheter shaft defining a guidewire lumen, wherein an inflow path configured to direct material in a proximal direction is defined between the second catheter shaft and the third catheter shaft;
• a first helical impeller positioned in the outflow path configured to direct the fluid through the outflow path to the outflow opening;
• a second helical impeller positioned within the inflow path, the second helical impeller configured to draw the fluid released from the outflow opening distally into the inflow opening, the second helical impeller having a diameter greater than an inner diameter of the outflow path;
• and
• a guidewire configured to be positioned within the guidewire lumen.

A method of assembling a thrombectomy device comprising:

• positioning a first catheter shaft defining a first lumen and comprising a first catheter shaft distal end about a second catheter shaft such that the second catheter shaft is positioned within the first lumen, wherein an outflow path configured to direct fluid in a distal direction is defined between the first catheter shaft and the second catheter shaft, the second catheter shaft defining a second lumen and comprising a second catheter shaft distal end defining an inflow opening, wherein the first catheter shaft distal end defines an outflow opening positioned proximal to the inflow opening;
• positioning a third catheter shaft within the second lumen, wherein an inflow path configured to direct material in a proximal direction is defined between the second catheter shaft and the third catheter shaft;
• positioning a first helical impeller in the outflow path, the first helical impeller configured to direct the fluid through the outflow path to the outflow opening;
• and
• positioning a second helical impeller within the inflow path, the second helical impeller configured to draw the fluid released from the outflow opening distally into the inflow opening, the second helical impeller having a diameter greater than an inner diameter of the outflow path.