Apparatus for removing cataractous-lens tissue

Details Apparatus for removing cataractous-lens tissue Apparatus for removing cataractous-lens tissue

A - Human Necessities

61

B

A61B 17/22 (2006.01) A61F 9/00 (2006.01) A61F 9/011 (2006.01) A61M 1/00 (2006.01) A61B 17/36 (1990.01)

Patent

CA 2113911

2113911 9301756 PCTABS00019 A hand-held phaco-extractor instrument (10) comprises an elongate tubular irrigation/aspiration system (28/39) for a distal or operating end (11), wherein a fiber-optic cable (15, 16) delivers laser-irradiation of wavelength which is so substantially coincident with the known high absorptivity in water that laser-energy penetration is essentially limited to the region of cataractous-lens tissue to be fragmented and extracted. In other words, for the aqueous environment in which the particular laser radiation is to do its fragmentation, there is no possibility of damaging radiation penetration to the retina or to other regions of the eye which are irrelevant to the involved cataract-removal surgery.

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