Catheter devices and methods for delivering

Details Catheter devices and methods for delivering Catheter devices and methods for delivering

1993-02-02

1994-04-19

Aschenbrenner, Peter A.

Surgery

Instruments

Light application

385125, 606 7, 606 16, A61B 1736

Patent

active

053041712

ABSTRACT:
A method for conducting laser energy to a site includes steps of bringing the proximal end of a flexible tube near the site, filling at least a proximal portion of the tube with a liquid by introducing the liquid into the tube, allowing a portion of the liquid to flow out from the proximal end of the tube toward the site, and directing laser energy from a laser energy source into the distal end of the tube, whereby a portion of the laser energy emerges from the proximal end of the tube at the site. Also, such a method in which the liquid is a radiographic contrast medium. Also, such a method for removing an obstruction from a blood vessel in an animal. Also, apparatus for delivering laser energy to a site includes a flexible tube, a liquid, the tube having an opening in a first end through which the liquid can pass, means for providing a flow of the liquid into the tube, and a source of laser energy operationally associated with a second end of the tube, wherein the tube and the liquid are adapted to cooperate, when the tube contains the liquid, to conduct laser energy from the source and to emit a portion of the laser energy from the first end of the liquid-containing tube.

REFERENCES:
patent: 3995934 (1976-12-01), Nath
patent: 4045119 (1977-08-01), Eastgate
patent: 4201446 (1980-05-01), Geddes et al.
patent: 4697870 (1987-10-01), Richards
patent: 4747405 (1988-05-01), Leckrone
patent: 4850351 (1989-07-01), Herman et al.
patent: 4927231 (1990-05-01), Levatter
patent: 5030217 (1991-07-01), Harrington
Prints of eleven (11) photographic transparencies shown by inventor Kenton Gregory during an oral presentation given at the 62nd Annual Scientific Sessions of the American Heart Association in Nov. 1989 in New Orleans, La.

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