Optical fibre and laser for removal of arterial or vascular obstructions
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United States of America Patent
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-
Mar 31, 1998
Grant Date -
N/A
app pub date -
Apr 17, 1995
filing date -
Jun 22, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus and method of ablating obstructing vascular or arterial material is provided including a pre-polished optical fiber for providing a specific laser light path focal point inserted within a catheter having a protective shield. The optical fiber may be controlled for axial and rotational movement via an optical rotary coupler and a rotary axial stepper to provide rotation speed of up to 5,000 rpm and incremental axial movement from between 1 micron to 1 millimeter. A laser light source is provided for adjustment of the wavelength of the laser light emitted from the end face of the optical fiber to correspond to the absorption characteristics of the material to be ablated.
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