CATHETER APPARATUS FOR TREATING VASCULATURES

摘要

A catheter apparatus (11) for advancing a guidewire through a chronic total occlusion in a vasculature which may have a shaft having a distal portion; a removable, expansible scaffold structure (27) coupled to the distal portion (13) of the shaft (23)and a single, centrally located lumen (47) passing centrally through the shaft and through the expansible scaffold structure and configured to pass over a guidewire.