Intravascular foreign matter suction assembly

An intravascular foreign matter suction assembly for sucking foreign matter existing in a blood vessel, comprising:

• a guiding catheter including a distal end and a proximal end and forming a lumen extending from the distal end to the proximal end, the guiding catheter configured to be inserted into a blood vessel until a position on proximal side of a target location in the blood vessel is reached;
• a suction catheter comprising a tubular portion provided on a distal side of the suction catheter, the tubular portion including a distal tube end and a proximal tube end, and a solid wire portion provided at the proximal tube end of said tubular portion and having a distal end embedded in a wall which forms said tubular portion, and wherein said suction catheter is configured to be inserted in said lumen of said guiding catheter and said tubular portion is configured to project outwardly beyond the distal end of said guiding catheter for removing foreign matter existing at the target location in the blood vessel;
• a negative pressure generating device connected to the proximal end of said guiding catheter;
• wherein said guiding catheter has a minimum inner diameter greater than a maximum outer diameter of said suction catheter by at least 0.05 mm and no more than 0.15 mm;
• and when said negative pressure generating device generates a negative pressure, the foreign matter and the blood existing in the blood vessel are sucked only through an opening at the distal end of said suction catheter but are not substantially sucked through the distal end of said guiding catheter.