Patent ID: 6824525
Filing Date: 2004-11-30
Classification: A61M

Abstract:
An ophthalmic surgical cassette for removably disposing in a cassette receiving mechanism of an ophthalmic surgical system, said system comprising a source of vacuum and first and second plunger valves, said cassette comprising:a body having a rear surface; a vacuum chamber disposed within said body for fluidly coupling to said source of vacuum; an aspiration port disposed on said body for providing vacuum to a first ophthalmic microsurgical instrument; and a flexible aspiration manifold fluidly coupled to said aspiration port and said vacuum chamber and at least partially disposed proximate said rear surface so as to allow operative engagement with said first and second plunger valves; whereby during operation of said ophthalmic surgical system, actuation of said first plunger valve pinches said aspiration manifold between said first plunger valve and said rear surface to create a microreflux pressure wave within said aspiration manifold that eventually exits said aspiration port, and actuation of said second plunger valve pinches said aspiration manifold between said second plunger valve and said rear surface to augment said microreflux pressure wave.