Contrast agent removing device and contrast agent removing method

A contrast agent removing device for removing a contrast agent from a blood vessel, comprising:

• an elongated outer tube;
• an inner shaft arranged in an interior of the outer tube;
• an expandable portion interlocked with a distal portion of the inner shaft and configured to be capable of being stored in the interior of the outer tube and to expand radially outward into a funnel shape opening in a distal direction by projecting in the distal direction from the outer tube, wherein the inner shaft includes a storage portion, which corresponds to a space extending from the distal portion surrounded by the expandable portion in a proximal direction;
• an adsorbent arranged within the storage portion and configured to be capable of adsorbing the contrast agent;
• and
• a fixing portion provided at a rim of the expandable portion and configured to be capable of being fixed to a contact object.