Ophthalmologic aspiration and irrigation system, and method of operating same
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United States of America Patent
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Oct 14, 1997
Grant Date -
N/A
app pub date -
Dec 19, 1995
filing date -
Dec 20, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An aspiration and irrigation system of an ophthalmologic device for performing surgical operations on an eye of a living being, includes an irrigation unit for conducting a fluid under pressure to the eye via a first passageway, and an aspiration unit for simultaneous removal of fluid and/or tissue from the eye via a second passageway. The aspiration unit includes a two-stage pump system with a primary vacuum pump producing suction to effect a withdrawal of fluid and/or tissue from the eye through the second passageway and a secondary vacuum pump positioned downstream of the primary pump in a third passageway in communication with the second passageway, for boosting the suction pressure produced by the primary pump.
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