Apparatus for phacoemulsifying cataractous-lens tissue within a

Details Apparatus for phacoemulsifying cataractous-lens tissue within a Apparatus for phacoemulsifying cataractous-lens tissue within a

1991-07-19

1993-11-02

Pellegrino, Stephen C.

Surgery

Instruments

Light application

606 4, 606 12, 606 15, 604 21, 604 22, 607 89, A61B 1736

Patent

active

052579883

ABSTRACT:
An instrument for ophthalmic surgery to remove cataractous-lens tissue has an elongate stem which enables external manipulation at its proximal end and which at its distal end presents a cutter adjacent a transiently open cavity into which cut or chopped tissue can be manipulated. The instrument provides for selectively operated closure of the thus-loaded cavity, an event which must occur before laser radiation can issue within the cavity, in fragmenting or emulsifying reduction of cut or chopped tissue within the cavity. Thus, reduced, the fragmented material is extracted by an aspirating flow of liquid. This process is repeated until the capsulary bag has been cleared of cataractous material, be it nuclear or cortical.

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