1. Trilinear Phaco Using the Dual Linear Foot Pedal and Burst Mode Phacoemulsification
Terence M. Devine, M.D.
USA

2. Phaco Technology Ultrasonic Fluidics Power Linear Power Flow Control
VacuumControl
Chamber Stability
Linear Power
Pulser Power
Burst Mode Power

3. Fluidics
Power
“Cutting Efficiency”

4. Fluidics
Power
Safe
Easy
Quick

5. Flow
“Followability”

6. Vacuum
“Holding Force”

7. Ultrasonic Power
“Emulsification”

8. Tri-Linear Phacoemulsification

9. Bausch & Lomb Millennium™
Venturi

10. Dual Linear Footpedal

11. PITCH

12. YAW

13. “Non-occluded State”
Gas + - +

14. Gas
Flow Valve T
From Handpiece
Microprocessor
Foot Pedal
YAW

15. Flow “Followability” Non-occluded State Flow Vac Flow 50 100 150 200
vacuum 50
100
150
200
250
300 17 23 29 35 40 46
Flow “Followability”

16. Tip Occluded
Vacuum “Holding Force”

17. FLOW 20
Panel Control VS
Gas-Pedal Control
YAW

18. Safety and Efficiency
Flow
Low Flow
High Flow

19. “Burst Mode” Case 1

20. Fluidics
Power
Dual Linear Foot Pedal
Burst Mode
Cutting Efficiency

21. Fluid wave
Followability
Flow
Impact
Lens “Chatter”

22. Pulser Power
Off On
Off On
Followability
Cooling
Off

25. Standard Pulse ON
OFF
Burst 2 ON
OFF
Time

26. Standard Pulse
Peak Energy
Total Energy
Burst 2
Followability
Cooling

27. Millennium™ Burst Modes
Rise Time 1
Rise Time 2
Pulse Duration
80 – 600 ms
Examples:
“Bimanual phaco”
cataracts
Pulse Duration ms
Examples:
cataracts

28. “Carrier Frequency” is fixed.
Millennium™ =
Legacy® =
Sovereign® =
28.5 KHz
40 KHz

29. Millennium™ = 28.5 KHz Pulser Linear Power Burst Pulse Duration
(1 – 20 pulses/sec) OR
Linear Power
(0 – 100%)
Burst Pulse Duration
(80 – 600 ms)

30. Transient Cavitation Bubbles
Bubble Size
Lower
Frequency
Bubble Energy
Cutting

31. Transient Cavitation Bubbles
28.5 KHz
40 KHz
73 Microns
52 Microns
E = 2.76
E = 1.00

32. ? Ultrasonics Sonics Stroke Intensity = 5 inches 40,000 Hz 28,500 Hz

33. Eye World October 2004 Dr. Howard Fine
Millennium™ Burst Mode
Sovereign® White Star
Legacy® NeoSonix
Clear Corneas at 24 hours
100%
100%
98%
≥ 20/40
100%
94%
96%

34. Trilinear Phaco Linear Power or Burst Flow Vacuum YAW 17 - 46 cc/min
mmHg
Linear Power or Burst

35. “Burst Mode” Case 2

36. “Burst Mode” Case 3

37. Phaco Technology Ultrasonic Fluidics Power Flow Control VacuumControl
Chamber Stability
Linear Power
Pulser Power
Burst Mode Power