MECHANICAL THROMBECTOMY APPARATUSES AND METHODS

摘要

Methods and apparatuses for mechanically removing objects from a body. In particular, described herein are thrombectomy methods and mechanical thrombectomy apparatuses for removal of blood clots from within a lumen of a blood vessel.

主权项

1. A mechanical thrombectomy apparatus for removing a clot from a vessel, the apparatus comprising:
a catheter having a distal end and a distal end opening, wherein the material hardness of catheter decreases over the distal end of the catheter until the distal end opening, wherein the distal end opening has a material hardness that is greater than a material hardness of a region immediately proximal to the distal end, further wherein the distal end opening has a rounded lip profile; a flexible tube extending within the catheter and doubling back over the distal end of the catheter, wherein the flexible tube is configured to invert over the distal end opening when a first end of the flexible tube is pulled proximally within the catheter, further wherein the flexible tube is biased so that a region of the flexible tube inverting over the catheter bulges radially away from the distal end opening; and a guidewire lumen through the catheter and the flexible tube configured to pass a guidewire.