Patent ID: 8465456

Claim:
An intravascular aspirating assembly comprising: an elongate guidewire having an occlusion device disposed on a distal portion thereof; an aspiration catheter disposed on the guidewire, the aspiration catheter having a proximal end, a distal end and an aspiration lumen extending therebetween; and an extension catheter tube slidably disposed in the aspiration lumen, the extension catheter tube having a proximal end, a distal end, a lumen extending therebetween, and a length greater than that of the aspiration catheter, wherein the occlusion device is a proximally facing distal protection filter capable of limiting distal travel of the aspiration catheter at a first distal position relative to the guidewire; wherein the distal end of the extension catheter tube is capable of advancing to a second distal position distal of the first distal position relative to the guidewire; wherein at the second distal position, the extension catheter tube is disposed within the occlusion device; and wherein the proximal end of the extension catheter tube extends proximally of the aspiration catheter.