Laser channeling devices
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United States of America Patent
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Jan 18, 2005
Grant Date -
Nov 27, 2003
app pub date -
May 21, 2002
filing date -
May 21, 2002
priority date (Note) -
Expired
status (Latency Note)
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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.
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