Patent ID: 9700332
Date: 2017-07-11
CPC Classifications: A61B,A61F

Claim:
1. A method of treating deep vein thrombosis in a peripheral vasculature of a patient, the method comprising: providing a thrombus extraction device comprising a proximal self-expanding coring portion formed of a unitary fenestrated structure and a distal expandable tubular portion formed of a braided filament mesh structure, wherein the mesh structure is integrally formed with the fenestrated structure so that a proximal end of the mesh structure is attached to a distal end of the fenestrated structure; advancing a catheter constraining the thrombus extraction device through a vascular thrombus in a venous vessel, wherein an intermediate shaft slidably extends through the catheter and a distal end thereof is coupled to a proximal end of the fenestrated structure, and wherein an inner shaft slidably extends through the intermediate shaft and a distal end thereof is coupled to a distal end of the mesh structure; deploying the thrombus extraction device from the catheter from a constrained configuration to an expanded configuration, wherein the thrombus extraction device in an expanded state engages at least a wall of the vessel distally past a portion of the vascular thrombus; retracting the thrombus extraction device proximally so that the coring portion cores and separates a portion of the vascular thrombus from the venous vessel wall while the mesh structure captures the vascular thrombus portion; and withdrawing the thrombus extraction device from the patient to remove the vascular thrombus portion from the venous vessel.