Patent ID: 8388644
Filing Date: 2013-03-05
Classification: A61B,A61F,A61M

Abstract:
1. A medical device for embolic protection within a patient's body vessel, the medical device having a first lumen and a second lumen, the medical device comprising: an outer catheter having a proximal end and a distal end, the outer catheter having an outer lumen formed through the proximal and distal ends defining a proximal opening at the proximal end and a distal opening at the distal end of the outer catheter; an inner catheter movable within the outer catheter and having a proximal end and a distal end, the inner catheter having an inner lumen formed through the proximal and distal ends defining a proximal opening at the proximal end and a distal opening at the distal end of the inner catheter; and a flexible filter portion having a body extending from a first end to a second end, the first end being attached to the distal end of the inner catheter and the second end being attached to the distal end of the outer catheter, the outer catheter and the inner catheter movable relative to one another to move the filter portion between a collapsed state for delivery and removal of the device and an expanded state for engaging the filter body with a body vessel wall, the distal end of the inner catheter being arranged proximal to the distal end of the outer catheter such that the filter body is everted and defines a distal cavity within the distal end of the outer catheter in the collapsed state, the distal end of the inner catheter being movable distal to the distal end of the outer catheter such that the filter body is generally non-everted and defines a cylindrical body extending distally from the distal end of the outer catheter in the expanded state and enclosing a region configured to allow blood flow into surrounding vessel branches prevent emboli or thrombi from entering into the surrounding vessel branches, the distal ends of the outer catheter and the inner catheter being longitudinally separated by approximately the length of the filter body in the collapsed state and in the expanded state.