Device for use in laser angioplasty

Details Device for use in laser angioplasty Device for use in laser angioplasty

1990-10-29

1993-10-19

Shay, David M.

Surgery

Instruments

Light application

606 10, 606 12, 606 15, 606 17, 12866001, 12866003, 12866203, 12866206, A61N 506, A61B 812

Patent

active

052541126

ABSTRACT:
Apparatus for use in removing atherosclerotic plaque deposits in a blood vessel comprises a high power laser, an elongated, flexible catheter adapted to be inserted into and advanced through the blood vessel, a plurality of circumferentially arrayed optical fibers extending axially through the catheter, and an ultrasonic transducer at the distal end of the catheter for transmitting acoustical energy toward a selected area of the inner surface of a blood vessel in response to laser energy coupled through any one of the optical fibers and impinging upon the transducer. A detector proximal of the ultrasonic transducer is responsive to ultrasonic energy reflected from the blood vessel and produces a signal indicative of the tissue interfaces of the blood vessel. Laser energy can be transmitted from the high power laser through the same optical fiber used for the diagnostic procedure to ablate plaque in the blood vessel.

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