A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/111
A61M 1/00 (2006.01) A61F 9/00 (2006.01) A61M 3/02 (2006.01)
Patent
CA 1068572
ABSTRACT A fluidic control system is provided for use in irrigation and aspiration of the anterior chamber of the eye during ultrasonic fragmentation of a cataract therein. The system comprises a handpiece with an (ultrason- ically vibrated) hollow tip, the hollow tip being connected to the fluid with- drawal or aspirating portion, while an annular passage around the tip is used to introduce fluid for irrigation purposes. The aspirating portion comprises a withdrawal hose attached to the output manifold of the handpiece in fluid communication with the hollow tip, a constant flow pump attached to the other end of the withdrawal hose, and a vacuum relief valve connected to the with- drawal hose intermediate the pump and the handpiece. The irrigation portion comprises a fluid supply bottle at a predetermined height above the eye, and administration set attached to the bottle, and an inflow hose attached to the intake manifold of the handpiece and in fluid communication with the annular passage. All the aforementioned components are in fluid communication with the anterior chamber of the eye during removal of a cataract by insertion of the handpiece tip into the eye chamber.
218129
Broadwin Alan
Weiss Steven N.
LandOfFree
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