Phaco-extractor for fragmenting cataractous-lens situs of fragme

Details Phaco-extractor for fragmenting cataractous-lens situs of fragme Phaco-extractor for fragmenting cataractous-lens situs of fragme

1991-07-24

1993-11-23

Pellegrino, Stephen C.

Surgery

Instruments

Light application

606 2, 606 4, 604 19, 604 27, 604 43, 607 89, A61B 1736

Patent

active

052639509

ABSTRACT:
A hand-held phaco-extractor instrument comprises an elongate tubular irrigation/aspiration system for a distal or operating end, wherein a fiber-optic cable 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.

REFERENCES:
patent: 4694828 (1987-09-01), Eichenbaum
patent: 4760840 (1988-08-01), Fournier, Jr. et al.
patent: 4819630 (1989-04-01), DeHart
patent: 4846172 (1989-07-01), Berlin
patent: 4917084 (1990-04-01), Sinofsky
patent: 4959063 (1990-09-01), Kojima
patent: 4988163 (1991-01-01), Cohen et al.
patent: 5123902 (1992-06-01), Muller et al.
patent: 5129896 (1992-07-01), Hasson

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