Cassette assembly for ophthalmic surgery system
AssigneeUnited Sonics Incorporated
InventorsRobert Cavoto, Anthony DiGiacomo, Christopher V. Kayser, Joseph D. Spinosa
Life of this patent
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Abstract
A cassette and a cassette receptacle assembly are provided for use in an ocular surgical system. The cassette includes a housing which defines an arcuate race. A flexible tube extends across the race and conveys a fluid when compressed by the rollers of a roller pump. A slot is defined by the housing at the point where the tube forms a bend prior to entering the race. The slot has a height which is preferably smaller than the diameter of the tube and therefore prevents the tube from flattening as the rollers urge it away from the slot. The cassette mounting assembly includes a pair of cams which urge the cassette into a locked position with respect to the roller pump.
Claims15
A cassette for an ophthalmic surgery system or the like, comprising:
- a channel extending through at least a portion of said housing and adjoining said race;
- and
- a slot defined by said housing at the junction of said channel and said race, said slot being defined by an upper surface, a lower surface and an inner surface extending substantially perpendicularly with respect to said upper and lower surfaces and connecting said upper and lower surfaces.
A cassette as defined in claim including a flexible tube positioned within said channel and extending adjacent to said race, said tube being positioned within said slot.
A cassette receptacle assembly for an opthalmic surgery irrigation/aspiration system comprising:
- a housing;
- a slot defined within said housing, said slot having a front end and a rear end;
- latching means mounted to said housing, said latching means including cassette engagement means for engaging a cassette inserted within said slot;
- a roller pump mounted to said housing, said roller pump including rollers positioned adjacent said rear end of said slot;
- spring means connected between said housing and said latching means for urging said latching means in a selected direction once said cassette engagement means have engaged a cassette, whereby said cassette is urged to a predetermined position with respect to a said roller pump;
- and
- means for maintaining a cassette in a substantially fixed, predetermined position with respect to said roller pump during the operation of said roller pump.
Dependencies are inferred from the claim text.