Johnson & Johnson Surgical Vision Veritas, Operator'S Manual

Page: 149 / 270

Program Settings
Z370584 Rev. D FUSION Fluidics Phaco
6-27
FUSION Fluidics Phaco
FUSION Fluidics Phaco is an intelligent vacuum monitoring system that regulates the
maximum allowable vacuum that follows 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 vacuum level. When the occlusion clears, the system automatically
restores to the original programmed maximum vacuum setting. It is possible to have a
different maximum vacuum setting when the tip occludes than when the tip is unoccluded.
You can program the power modulation of the phaco handpiece to automatically change
when the phaco tip changes from an unoccluded condition to an occluded condition.
Use the FUSION Fluidics screen to adjust the settings. When Occlusion mode is on, the main
Phaco operating screen provides alternative aspiration, vacuum, and power settings used
when the system detects an occlusion.
Figure 6-17 — FUSION Fluidics Phaco
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