Patent ID: 9095370
Filing Date: 2015-08-04
Classification: A61B,A61M

Abstract:
1. A method of treating occlusive vascular disease of a blood vessel, comprising the steps of: a) providing a guiding device comprising an elongated body and a dilatable tip, wherein the tip includes a plurality of helical members having a wound construction configured to radially expand when an unwinding torque is applied to the tip and to radially retract when a winding torque is applied and wherein the helical members form threads; b) advancing the guiding device through the blood vessel until the tip is adjacent an occlusive lesion; c) applying a winding torque to the dilatable tip by rotating the guiding device in a winding direction, thereby drilling the threads into the lesion; d) subsequent to step c), applying an unwinding torque to the dilatable tip and radially displacing a portion of the lesion by rotating the guiding device in an unwinding direction to dilate the tip; e) subsequent to step d), applying a winding torque to the dilatable tip, radially retracting the threads; f) advancing the guiding device further into the lesion by rotating the guiding device in a winding direction, thereby drilling the threads into the lesion; and g) repeating steps d) through f) at least once.