Surgical system and method for controlling fluid when treating a cataract with the phacoemulsification technique
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United States of America Patent
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May 24, 2011
Grant Date -
Apr 3, 2008
app pub date -
Sep 10, 2007
filing date -
Sep 8, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A surgical system controls a fluid and includes an irrigation line and a first fluid vessel for holding the irrigation fluid. The irrigation line connects the first fluid vessel to a handpiece. An aspiration input line connects a suction pump to the surgical handpiece and permits the suction pump to draw fluid through the surgical handpiece. A pressure sensor detects the pressure of the fluid in the aspiration input line. An aspiration output line connects the suction pump to a collection vessel to permit fluid from the suction pump to be conducted into the collection vessel. A second fluid vessel accommodates irrigation fluid therein and an aspiration ventilation line connects the second fluid vessel to the aspiration input line. A venting valve in the aspiration ventilation line is switchable in dependence upon the fluid pressure in the aspiration input line.
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