Surgical cassette apparatus
View Patent ↗A surgical cassette arrangement is provided. The arrangement includes a flow selector valve configured to operate with a handpiece to selectively irrigate and aspirate fluid with respect to an ocular region. The flow selector valve includes at least three ports, with one port fluidly connectable to the handpiece. The arrangement further includes a reservoir fluidly connected to a second port of the flow selector valve via a first flow segment and configured to receive fluid from the flow selector valve, and a collector fluidly connected to a third port of the flow selector valve via a second flow segment and configured to receive fluid from the flow selector valve and from the reservoir. The flow selector valve selectively controls irrigation and aspiration flow to the handpiece and ocular region.
1. A method for selectively venting and aspirating fluid to and from a handpiece employed in an ocular surgical procedure, comprising:
providing a first pumping operation for controlling fluid flow to and from the handpiece via a first fluid pathway connecting the handpiece and a flow selector valve, the first pumping operation using a first pump connected to a first port of the flow selector valve;
providing a second pumping operation for controlling fluid flow to and from the handpiece via the first fluid pathway, the second pumping operation using a second pump connected to a reservoir, wherein the reservoir is connected to a second port of the flow selector valve;
providing a first venting operation for controlling fluid flow to the handpiece via the first fluid pathway, the first venting operation using a bottle connected to a third port of the flow selector valve;
providing a second venting operation for controlling fluid flow to the handpiece via a second fluid pathway connecting the handpiece directly to the bottle; and
selecting operation between the first pumping operation, the second pumping operation, and the first venting operation using the flow selector valve.
2. The method of claim 1 , wherein one or more of the first pumping operation and the second pumping operation is selectively reversible.
3. The method of claim 1 , further comprising enabling further pumping from the reservoir to a collector by a third pump.
4. The method of claim 1 , wherein the first pumping operation comprises the first pump drawing fluid through the flow selector valve and passing the fluid to a collector.
5. The method of claim 1 , wherein the second pumping operation comprises the second pump drawing fluid through the flow selector valve and passing the fluid to the reservoir.
6. The method of claim 1 , wherein the first pumping operation comprises peristaltic pumping.
7. The method of claim 1 , wherein the second pumping operation comprises venturi pumping.
8. The method of claim 1 , wherein the first venting operation is performed to the exclusion of the first pumping operation and the second pumping operation.
9. The method of claim 1 , wherein the second venting operation is performed in conjunction with the first pumping operation or the second pumping operation.
10. The method of claim 1 , wherein the first fluid pathway includes a fluid vacuum sensor.