Patent ID: 8123770

Claim:
An angioplasty cutting device for balloon angioplasty of a stenotic lesion on a vessel wall in a body vessel, the device comprising: a balloon catheter having a body portion and an expandable balloon attached to the body portion for angioplasty at the stenotic lesion; a cutter comprising; a distal collar, a plurality of struts with the distal collar and proximally extending therefrom, the plurality of struts having a collapsed configuration for delivery or retrieval and an expanded configuration for cutting the stenotic lesion, the plurality of struts defining a cutting body configured to be disposed at the stenotic lesion and to be more radially expandable than the distal collar to engage the stenotic lesion for dilatation of the body vessel during angioplasty, the cutting body extending along and engaging the stenotic lesion generally longitudinally and non-circumferentially, the plurality of struts extending parallel to the longitudinal axis in a collapsed configuration, each strut configured to move along a radial plane of fracture extending from the longitudinal axis to the vessel wall as each struts moves from the collapsed configuration to the expanded configuration; and a proximal collar, the plurality of struts being with the proximal collar, at least one of the distal collar and the proximal collar having a slot formed therethrough defining a C-shaped configuration that is configured to be fastened about the expandable balloon; and wherein the angioplasty cutting device is removed from the body vessel after engaging the stenotic lesion.