Ultra-sound catheter for removing obstructions from tubular anat

Details Ultra-sound catheter for removing obstructions from tubular anat Ultra-sound catheter for removing obstructions from tubular anat

1993-09-28

1995-04-11

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

With means for cutting, scarifying, or vibrating tissue

12866203, 12866206, A61B 1720

Patent

active

054053188

ABSTRACT:
An ultrasound catheter for removing obstructions from tubular anatomic structures such as blood vessels, said catheter comprising an elongate flexible catheter body having an ultrasound transmission member or wire extending longitudinally therethrough. A distal head is formed on the distal end of the ultrasound transmission member or wire and is affixed to the catheter body. The ultrasound transmission member or wire may be formed of any material capable of transmitting ultrasonic energy including various superelastic metal alloys such as nickel titanium metal alloys. The distal portion of the ultrasound transmission member or wire may be of reduced diameter to provide enhanced flexibility and/or amplification of the ultrasonic energy through the distal portion of the ultrasound transmission member or wire. A coating or jacket may be disposed on all or portion(s) of the ultrasound transmission member or wire to reduce friction between the ultrasound transmission member or wire and surrounding structures.

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Circulation, vol. 81, No. 2, Feb. 1990, "Application of a New Phased-Array Ultrasound Imaging Catheter in the Assessment of Vascular Dimensions," pp. 660-666.
"Ultrasonic Energy Causes Doe-Dependent, Endothelium-Independent Arterial RElaxation"-T. Fischell, et al. Abstracts of the 63rd Scientific Sessions, p. III-219.

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