Importance

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Abstract

An ultrasonic angioplasty apparatus includes an ultrasonic generator which is coupled to a segmented wire that includes a relatively stiff portion, a more flexible portion and an extremely flexible portion. Ultrasonic energy, which is coupled to an end of the relatively stiff portion, reduces friction between the wire and an interior arterial vessel wall and whip-like motion of the extremely flexible portion allows the wire to pass high grade occlusions and plaque build-ups. The ultrasonic generator has a selectable range of operating frequencies which allow whip-like motion of the end of the wire, or alternatively directing ultrasonic cavitational forces into vessel wall to remove plaque build-up.

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First Claim