Abstract: An ophthalmic surgical hand piece comprises a driver coupled to a horn. The horn is coupled to a needle. An aspiration pump is integral with the hand piece and is located close to the needle. A rigid length of aspiration line is located between the aspiration pump and the needle. An optional pressure sensor is located between the aspiration pump and the needle as well.

Abstract: An ophthalmic surgical hand piece comprises a driver coupled to a horn. The horn is coupled to a needle. An aspiration pump is integral with the hand piece and is located close to the needle. A rigid length of aspiration line is located between the aspiration pump and the needle. An optional pressure sensor is located between the aspiration pump and the needle as well.

Abstract: An ophthalmic surgical hand piece comprises a driver coupled to a horn. The horn is coupled to a needle. An aspiration pump is integral with the hand piece and is located close to the needle. A rigid length of aspiration line is located between the aspiration pump and the needle. An optional pressure sensor is located between the aspiration pump and the needle as well.

Abstract: A peristaltic pump having an adaptive pulsation profile.

Abstract: A surgical system and cassette, the cassette having an identification method that is specific to the cassette. Suitable methods include bar coding or Radio Frequency Identification (“RFID”). Cassette information that may be encoded include features such as lot number and performance characteristics, such as pressure sensor calibration data, flow and pressure data and any other performance characteristics of the cassette captured during testing of the cassette at manufacture.

Abstract: A pressure sensing chamber having a tubing extension with a reduced diameter portion extending through the chamber. The tubing contains a plurality of ports so as to allow the purging of air from the chamber, but the ports are sized so that bubbles entering the tubing cannot easily flow into the chamber. The reduced diameter portion creates a pressure differential between the holes. This differential pressure creates flow through the chamber under high liquid flow and turbulent liquid flow events.

Abstract: A pressure sensing chamber having a canted tubing extension with a reduced diameter portion extending through the chamber. The tubing contains a plurality of ports so as to allow the purging of air from the chamber, but the ports are sized so that bubbles entering the tubing cannot easily flow into the chamber. The reduced diameter portion creates a pressure differential between the holes. This differential pressure creates flow through the chamber under high liquid flow and turbulent liquid flow events.

Abstract: A method to determine transaction distribution among a plurality of transaction processing systems may include calculating estimated handling resources for each of the plurality of transaction processing systems based upon measured actual handling resources and identified scheduled handling resources. Transaction allocations may be determined for each of the transaction processing systems based upon the estimated handling resources.

Abstract: A cassette having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The flow channel projects outwardly from the exterior of the cassette so that a peristaltic pump having pump head rollers mounted radially from the axis of rotation of the pump motor compress the elastomeric flow channels against the rigid substrate during operation.

Abstract: A method to determine transaction distribution among a plurality of transaction processing systems may include calculating estimated handling resources for each of the plurality of transaction processing systems based upon measured actual handling resources and identified scheduled handling resources. Transaction allocations may be determined for each of the transaction processing systems based upon the estimated handling resources.

Abstract: A method and apparatus for performing customer service request allocations based upon real-time data and forecast data, calculates estimated handling resources for each of the transaction processing systems based upon actual handling resources and scheduled handling resources. Customer service transaction workloads are forecasted for the handling resources for each of the transaction processing systems. Then, customer service request allocations are determined using estimated handling resources and the forecasted customer service transaction workload.

Abstract: A method and apparatus for performing customer service request allocations based upon real-time data and forecast data, calculates estimated handling resources for each of the transaction processing systems based upon actual handling resources and scheduled handling resources. Customer service transaction workloads are forecasted for the handling resources for each of the transaction processing systems. Then, customer service request allocations are determined using estimated handling resources and the forecasted customer service transaction workload.

Abstract: A method and apparatus are provided for performing staffing-based percentage-allocation routing using real-time data. According to one aspect of the present invention, transaction allocation is determined using both scheduled and actual handling resources. Actual handling resources associated with each of several transaction processing systems, such as automatic call distributors (ACDs), are measured at times t and t+n. Scheduled handling resources associated with each of the transaction processing systems for times t and t+n are also identified. Then, estimated handling resources are calculated for each of the transaction processing systems for time t+n based upon the actual handling resources and the scheduled handling resources. Finally, based upon the estimated handling resources, transaction allocations for each of the transaction processing systems are determined. According to another aspect of the present invention, a virtual call center is provided.