| abstract |
A guidewire system is disclosed for performing a rotational atherectomy procedure, wherein the system includes a core wire having an elongated wire body defining a flexible distal portion and a more rigid medial portion, and a torquing sheath for positioning the core wire, the torquing sheath having a normally curved, relatively flexible distal portion and an interior lumen dimensioned and configured to accommodate the core wire, wherein the medial portion of the core wire is sufficiently rigid to straighten the normally curved distal portion of the torquing sheath when it is extended therethrough. |