US 6,319,223 B1 · Compact cassette for ophthalmic surgery

Abstract

A cassette configuration, operative parts of which may be disposable or resterilizable, is configured with an adapter that may be mounted within the cassette receiving portal of a console that uses a peristaltic pump spaced apart from actuator and vent controls to engage the lower end wall of a cassette. The adapter is asymmetrically mounted in the available space, and allows a tubing loop from one side of a cassette inserted under it to be threaded through the peristaltic pump and to be seated in a bore in the adapter on the opposite side. A lower edge of the cassette fits into an interface slot in the console, and the interior tubing configuration enables clamping of irrigation and vent lines, while providing aspiration and irrigation flows to and from a handpiece. Within the cassette or in the console, flow control elements are provided to enable alternative venting of either air or fluid into the aspiration system to prevent excessive suction at the operative site. At the same time, the flow system and the pressure sensing and venting arrangement are configured to allow resterilization of the cassette if desired.

Claims3

Dependent claims

For use in a flow control console of the type having a recessed receiving portal including a reference wall in a first plane against which the distal face of a multi conduit cassette is to be received, to engage a peristaltic pump rotatable in a second plane parallel to the first at one side of the reference wall, and to be engageable by control elements adjacent one edge of the reference wall, and spaced apart from the peristaltic pump, a cassette system comprising:

an adapter element engageable to the reference wall and spanning from adjacent the peristaltic pump to adjacent the control elements when installed, the adapter element including a distal wall portion proximate to the reference wall when installed and a proximally extending shoulder asymmetrically disposed relative to the peristaltic pump and including a pump loop receiving element at an approximately tangential position relative to the peristaltic pump;
and
a cassette element including interior flexible tubing and configured to engage the adapter element adjacent the distal wall and shoulder therein, the cassette element including a side wall having flexible tubing therein accessible to the control elements in the console, and further including a pump loop extending toward the peristaltic pump at one side of the adapter element and including a coupling element seating in the receiving element and forming a pump loop for wrapping about the peristaltic pump.

A device for installation in a control console having a cassette receiving structure including a portal for installing a broad face of a cassette and including a bottom ledge, having a pair of actuators movable upwardly along vertical axes and from the bottom ledge, a sensing aperture, and a peristaltic pump rotating in a superior position about a substantially horizontal axis and facing the portal, comprising:

a retainer bracket mountable in the portal below the peristaltic pump, and joinable to the portal, the retainer bracket including a shaped retainer element adjacent one side and below the peristaltic pump;
a disposable cassette having a distal face engaging the retainer bracket and including, in a proximal wall thereof, apertures for irrigation and aspiration lines, for connection to an associated handpiece, and a lower edge including a sensing aperture and a pair of spaced apart clamp apertures on opposite sides thereof;
a first flexible conduit system within the disposable cassette and including a first backup surface adjacent one of the clamp apertures, and a flexible first interior conduit disposed in the path about the first backup surface and adjacent the associated clamp aperture;
a second interior conduit system including a second backup surface adjacent the second clamp aperture and including a flexible second interior flexible conduit wrapped about the second of the backup surfaces and engagable by an exterior actuator in the control console to be clamped against the backup surface;
a vent conduit system disposed within the disposable cassette and coupled to the aspiration and irrigation conduits and to the vent aperture at the lower edge of the disposable cassette;
and
a peristaltic pump conduit coupled from one side of the upper edge of the disposable cassette and including a length of flexible conduit for engaging the peristaltic pump of the console, and a coupler for seating in the retainer element, the coupler including a waste line conduit for emitting matter from the aspiration line.

4 more elements

Dependencies are inferred from the claim text.

Compact cassette for ophthalmic surgery

Life of this patent

Compact cassette for ophthalmic surgery

Life of this patent

Abstract

Claims3