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  • Systems designed for use in crossing through chronic total occlusions (CTO) in the vasculature (usually in the arteries) using high-frequency mechanical vibrations. These systems typically consist of a high-frequency generator (e.g., 20 kHz), ultrasound transducers to produce mechanical vibration from the electrical power, a sterile powered injector for irrigation (e.g., saline) of the catheter, and a single-use switch-activated catheter with a core wire that transmits the vibrations to the tip of the catheter. Also available are vascular occlusion crossing systems typically including dedicated catheters according to the intended use (e.g., coronary or peripheral arteries). The systems are used to facilitate guidewire passage across the CTO, permitting subsequent angioplasty procedures and/or stent placement; they are typically mounted on an intravenous pole.
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