Excimer laser delivery system, angioscope and angioplasty system

Details Excimer laser delivery system, angioscope and angioplasty system Excimer laser delivery system, angioscope and angioplasty system

1984-12-07

1987-02-10

Lee, John

Surgery

Truss

Pad

128 6, 350 9615, 350 9626, 604 21, 604 53, A61N 506, G02B 2326

Patent

active

046419128

ABSTRACT:
A system for the delivery of high power excimer laser energy includes an optical fiber of pure silica having an energy coupler at one end and a lens at the distal end. The energy coupler can be a funnel-shaped input to the fiber or it can be a water-filled cavity which acts as a buffer to decrease the apparent density of energy entering the fiber. The lens at the distal end of the fiber functions to concentrate the output beam so as to increase its density. The delivery system has particular utility in the field of angioplasty. In such an application, the delivery system can be used to transmit both laser and illuminating light so as to reduce the number of optical fibers that are required and thereby provide a system that is sufficiently small to be fed into a coronary artery. An ultra-thin image scope facilitates a determination of the distance of the distal end from the viewed object and hence the size of the object.

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Linsker et al, "Far-Ultraviolet Laser Ablation of Atherosclerotic Lesions", Lasers in Surgery and Medicine, 4:201-206, Jul. 25, 1984.

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