Apparatus and method of utilizing energy to excise...

Details Apparatus and method of utilizing energy to excise... Apparatus and method of utilizing energy to excise...

A - Human Necessities

61

B

128/113

A61B 17/14 (2006.01)

Patent

CA 1159330

ABSTRACT Pathological tissue is excised with a beam from a laser that is coupled through a flexible, optical waveguide to a collimator that reduces the beam cross-sectional area by variable, controlled amounts. A transparent bore or a graphite cannula couples the beam exiting the collimator to the tissue to vaporize same. An electrically responsive deflector gyrates the reduced cross-sectional area beam about a bore sight axis aligned with the cannula bore so that the excised tissue has a frusto-conical volume. To excise different, displaced tissue regions, a position servo system moves the cannula so the bore sight axis moves in a plane at right angles to a plane on the exterior surface containing the pathological tissue.

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