User's Manual

5 • Anterior Segment Surgery Operating Modes
WHITESTAR SIGNATURE™ System Rx Only – Z370147 Rev. C 1108 5-15
Fusion™ Fluidics
Phaco
Fusion™ Fluidics Phaco is an intelligent vacuum monitoring system used to
regulate the maximum allowable vacuum that is experienced following an
occlusion of the phaco tip. When the phaco tip becomes occluded, the vacuum
rises. Clearing of the occlusion while the vacuum is at a high level can cause a post-
occlusion surge. With CASE enabled, the System monitors the actual vacuum
levels and when the vacuum exceeds a specific threshold for a specified duration,
the System automatically adjusts the maximum allowable vacuum setting to a
lower predefined CASE maximum vacuum level. When the occlusion is cleared,
the System is automatically restored to the original programmed maximum vacuum
setting. It is possible to have a different maximum vacuum setting when the needle
is occluded than when the needle is not occluded.
The power modulation of the phaco handpiece can be programmed to automatically
change when the phaco tip changes from an unoccluded condition to an occluded
condition.
Figure 5.14 – Fusion™ Fluidics Phaco
The CASE screen shows the settings as a graph. To access the OCCLUSION
MODE™ Phaco and CASE settings:
1. Press the button from the PHACO mode screen.
1. CASE Vacuum 6. Up Time
2. Upper Threshold 7. Vacuum Level
3. Lower Threshold 8. Vacuum.
4. Vacuum Level crosses Upper Threshold. 9. Time.
5. Phaco activated. 10. Max Vac