US Patent 11464529 Systems and methods to modify intravascular lesions

An ultrasonic catheter assembly includes a sheath having a sheath lumen. A core wire is at least partially disposed within the sheath lumen. The core wire has a proximal portion and a distal portion. The proximal portion of the core wire is configured to be coupled to an ultrasound-producing mechanism. A working length of the distal portion of the core wire extends distally from the sheath. The working length is configured for longitudinal displacement, transverse displacement, or a combination of longitudinal and transverse displacement, in accordance with a plurality of output modes for vibrational energy supplied to the core wire proximal portion by the ultrasound-producing mechanism.