Laser channeling devices

Details Laser channeling devices Laser channeling devices

2005-01-18

2005-01-18

Ullah, Akm Enayet (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C606S015000

Reexamination Certificate

active

06845193

ABSTRACT:
An optical fiber device for ablating a channel through a plaque deposit or a clot in a blood vessel is described. Laser energy is transmitted through one or a bundle of optical fibers to a quartz or fused silica cylinder, whose distal end surface has been made into a desired shape and sandblasted or carbon coated or both. The cylinder is received with a pocket defined in a sheath which surrounds the optical fibers. Moreover, the cylinder includes a circumferential recess and the sheath includes a circumferential rib which engages into the recess for securing the lens in the pocket. In one embodiment, the cylinder has a cavity formed therein and the distal end of the optical fiber extends into the cavity. In a further embodiment, the device is adapted to be guided along a wire extending through the pocket and an aperture defined in the sheath and/or a channel defined in the cylinder.

REFERENCES:
patent: 4695697 (1987-09-01), Kosa
patent: 5207673 (1993-05-01), Ebling et al.
patent: 5361316 (1994-11-01), Tanaka et al.
patent: 5579423 (1996-11-01), Tanaka et al.
patent: 5782825 (1998-07-01), Anderson
patent: 5951541 (1999-09-01), Simpson et al.
patent: 6053911 (2000-04-01), Ryan et al.
patent: 6522827 (2003-02-01), Loeb et al.

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