Patent ID: 8784333
Filing Date: 2014-07-22
Classification: A61B

Abstract:
1. A catheter for removing material from the wall of a body lumen comprising: a catheter body having a proximal end and a distal end; a side aperture on the catheter body positioned proximally of the distal end of the catheter body; a penetration member mounted on the catheter body and configured to move along a path radially outwardly from the catheter body to penetrate material to be removed and then to move radially inwardly to apply a radially inward tension to the material to draw the material through the aperture into the catheter body; and a cutting element mounted to sever material drawn through the aperture, wherein the cutting element at least partially defines the side aperture, wherein the cutting element is configured to move along a path substantially parallel to an axis of the catheter body from a first position to a second position to cut material drawn through the aperture, wherein the penetration member is coupled to the cutting element and is configured to advance along a path outwardly from the catheter body into the material and then inwardly towards the catheter body to tension the material when the cutting element moves between the first and second positions.