Catheter for laser treatment of atherosclerotic plaque and other

Details Catheter for laser treatment of atherosclerotic plaque and other Catheter for laser treatment of atherosclerotic plaque and other

1997-05-05

1999-06-29

Shay, David M.

Surgery

Instruments

Light application

606 10, 606 15, 606 17, 606 18, 600439, 600443, 600 7, A61N 506

Patent

active

059162104

ABSTRACT:
A medical catheter for treating atherosclerotic plaque and other abnormalities includes optical fibers for applying laser energy to the plaque and an ultrasonic transducer system for sensing the location and configuration of the plaque. The optical fibers and electrical wiring for the transducers extend through a probe which is rotatable inside of the catheter tube to provide universal directional control of the fibers and transducers. A reflective system includes a curved reflector in the probe which can be axially adjusted to vary the directions of the ultrasonic signals. Alternative forms of the invention include different reflector schemes, an angled ultrasonic transducer having a conical signal output that varies with frequency, and various different systems for rotating the transducers and fibers.

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"Similarities and Differences Between Fiber Acoustics and Fiber Optics" C.K. Jen, Dated 1985.

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