User's Manual Part 3

8065751025 2.71

Constellation

Vision System

is adjusted by pressing Up/Down arrow buttons on the Cutting control or selecting the

Conﬁguration button to display the Conﬁguration popup that has a slidebar for large

numeric adjustments in cut rate.

The controls for each panel in VitWet submode are the same as in 3D submode with

the following exceptions:

No Vacuum On/Off or Start Up/Down buttons - Vacuum always begins at zero.

No Flow Start Up/Down buttons - Flow always begins at zero.

No Cut Rate Start Up/Down buttons - Cut rate is a constant rate set by the End

buttons and activated when the footpedal is pressed.

No Forceps Panel.

Phaco Mode

Phaco mode provides phacoemulsification capabilities by using U/S powered

handpieces controlled by the footswitch. U/S power may be linearly controlled from

either zero to the operator specified value or pulsed.

When the U/S handpiece is selected, irrigation, aspiration, and phaco power are

provided to the handpiece tip. Phaco power is defined as being proportional to

ultrasound displacement of the phaco tip. Amplitude of the ultrasound displacement

of the phaco tip is proportional to the ultrasound power displayed on the console

front panel. The user has the ability to adjust the aspiration rate, vacuum levels, and

phaco power at any time during the surgical procedure via their respective adjustment

arrows or remote control.

The phaco Power Limit is increased or decreased via the front panel in increments

of 5% from a minimum of 0% to a maximum of 100%. The amount of phaco power

delivered to the handpiece is controlled by one of two methods: linear or fixed

footpedal control.

In Flow Mode, the Aspiration panel is displayed while in Vacuum Mode, the Vacuum

panel is displayed. In “Standard” display mode, only the Flow mode controls

are available. When system detects an occlusion, an alarm sounds and the word

"Occlusion" appears on the extraction panel (in either vacuum mode or flow mode)

under the primary limit control’s label.

There are four submodes available in Phaco mode

Burst

Custom

Pulsed

Continuous

Phaco Mode: BURST SUBMODE

In the Phaco Burst submode fixed U/S power (Power %) can be adjusted for duration

(On Time) and time off between (Off Time) U/S power pulses. The frequency of

bursts is controlled with the footpedal from detent two to full treadle depression,

while the fixed burst length is set in milliseconds (ms). The actual percent of time U/S

power is activated is reflected in the Actual window.

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