Lesion-Specific Laser Catheter Angioplasty
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-01
In laser irradiation of atherosclerotic lesions in blood vessels using a fiber-optic catheter, an important problem limiting clinical applicability is the risk of perforation of the vessel wall resulting from absorption of laser energy. This occurs due to lack of adequate control of beam position and/or of beam penetration depth. The present invention eliminates the risk of excessive beam penetration depth (leading to perforation), and also prevents undesired irradiation of tissue that does not contain atheroma (plaque). Further, it does not require any fine control of the direction of the laser beam or of the positioning of the catheter.