Patent ID: 7250042

Claim:
A thrombus suction catheter comprising a flexible plastic tube having a first lumen passing through from a proximal end to a distal end of the catheter, an opening at the distal end of the catheter, an insertion port for a guidewire provided in the catheter at a position apart from the distal end of the catheter, and a second lumen provided for the guidewire and extending from the insertion port to the opening at the distal end of the catheter, wherein the opening at the distal end of the catheter comprises a cut surface angled with respect to the axis of the catheter, the cut surface terminating in a necked-down tip in an axial direction at a distal side of the cut surface, and the necked-down tip including the second lumen provided for the guidewire, and the cut surface including a first cut surface extending from a proximal side of the neck-down tip and angled in the proximal direction of the catheter, a ledge surface which is substantially parallel to the longitudinal axis of the catheter and extends from the first cut surface in the proximal direction and a second concave cut surface extending from the ledge surface and angled in the proximal direction of the catheter; whereby the thrombus catheter is provided with improved suction, reaching ability and passage in a body to a lesion portion in a coronary artery.