Fiber optic laser catheter and method of use

Details Fiber optic laser catheter and method of use Fiber optic laser catheter and method of use

A - Human Necessities

61

N

A61N 5/06 (2006.01) A61B 18/24 (2006.01) A61B 17/22 (2006.01) A61B 18/00 (2006.01) A61B 18/22 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2088493

2088493 9202276 PCTABS00010 A fiber optic laser catheter assembly (21) for use in removing, or largely debulking, obstructions or occlusions (35) from a lumen in a living body. The catheter assembly includes an outer tubular sheath (25), an optical fiber (27) extending through the sheath, and a fiber guide (41) for holding the fiber within the sheath. In all of the disclosed embodiments, the obstructions are removed by controllably positioning an optical fiber's distal tip in a succession of selected radial and circumferential positions so as to sculpt away the obstruction without substantial risk of mechanically or thermally damaging the vessel. Several of the embodiments are configured such that the portion of the occlusion that can be reliably sculpted away has a radius greater even than the radius of the catheter assembly itself.

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