Ophthalmologic aspiration and irrigation system, and method of o

Details Ophthalmologic aspiration and irrigation system, and method of o Ophthalmologic aspiration and irrigation system, and method of o

1995-12-19

1997-10-14

Bockelman, Mark

Surgery

Means for introducing or removing material from body for...

Material introduced into and removed from body through...

604 31, 604119, 604 35, 417205, 417251, A61M 3700, A61M 100

Patent

active

056766505

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.

REFERENCES:
patent: 3642382 (1972-02-01), Huse
patent: 4274411 (1981-06-01), Dotson, Jr.
patent: 4325676 (1982-04-01), Fenne et al.
patent: 5039280 (1991-08-01), Saulgeot et al.
patent: 5382229 (1995-01-01), Grabenkort et al.

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