A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 5/14 (2006.01) A61F 9/007 (2006.01) A61B 17/32 (2006.01) A61B 18/04 (2006.01) A61M 1/00 (2006.01)
Patent
CA 2269266
A surgical handpiece having at least two lumens mounted to a body. At least one lumen is used for aspiration and at least one other lumen is used to inject heated surgical fluid for liquefying a cataractous lens. A portion of the second lumen is enlarged to form a pumping chamber. The pumping chamber works by boiling a small volume of the surgical fluid. As the fluid boils, it expands rapidly, thereby propelling the liquid downstream of the pumping chamber out of the second lumen. The pumping chamber may use a pair of electrodes, and one of the electrodes may contain a countersink.
Capetan Thomas G.
Cohen Donald M.
Sussman Glenn
Alcon Laboratories Inc.
Kirby Eades Gale Baker
LandOfFree
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