29.05.09
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17
8.6
Vitrectomy
Press one of the buttons VIT A, VIT B or VIT PN.
VIT A1
1200/min
Surgeon 2
IOP 75cm
10ml/min 250mmHg
The display fields indicate the function selected, together with
the values last used for cutting rate, flow (Venturi rate) and
suction. The arrow buttons can be used to increase or reduce
these values at any time.
Unless otherwise specified in ParaProg, the VIT A connection
serves to operate an SDS or SUS guillotine vitrectomy
stripper, and the VIT B connection the micro-scissors.
The PN connection is for operating the pneumatically-driven
Twinac vitrectomy instrument.
NOTE: In ParaProg, VIT A, VIT B and VIT PN can be set up for stripper or
scissor operation, according to preference.
Vitrectomy multimodulation programs
Three multimode memories are available for each of the
functions VIT A, VIT B, VIT PN. They are identified as VIT
A1, VIT A2, etc. on the function display. Switching between
these multimode programs is accomplished by repeated
depressing of the corresponding function key (VIT A, VIT B,
VIT PN) or by swinging the pedal to the right while in position
0 or 1.
NOTE: in ParaProg you can barr these multimode memories or limit to two
memories only.
Storing of the values for the vitrectomy multimode programs
is done as described in Section 8.1.
TEST function
Press the TEST button to check whether the connected
instrument is functioning properly (operation with the set
number of cutting movements).
The surgeon controls the vitrectomy procedure by using the
pedal. When the pedal is active, the value display fields show
the current values. Unless otherwise specified in ParaProg,
the following controls are available ("linear vitrectomy"):
Vertical step 1:
Irrigation
Vertical step 2:
Linear aspiration
Vertical step 3:
Linear cutting
Horizontal left:
Instant diathermy (only in position 0)
Horizontal right: Single cut (stripper VIT A) Close scissors
(VIT B)
NOTE:
In ParaProg, you can specify the reverse sequence: position 2 cut,
position 3 aspiration, and program the horizontal right movement to switch
between VIT A1, VIT A2 etc. Instant diathermy can also be made available for
operation in positions 2 and 3.
Duallinear vitrectomy
This operating mode enables separate control of the pump by
vertical pedal movement and control of the cutting rate by
moving the pedal horizontally to the left (or vice versa). It is
programmed in ParaProg.
To exit the VIT function, you can either press a new function
button or the RESET button.
As long as the pedal is active (positions 2, 3), only the arrow
buttons and the RESET, AUX and VOICE buttons will
respond.
9
System communication
9.1
Visual displays
Light indicators serve to show selected, programmed and
current values and important information about all other unit
states on the control panel and remote controller. Warnings
and instructions are displayed in the language selected in
ParaProg. See also
Section 17.
9.2
Acoustic signals
The unit uses acoustic signals to indicate the state of the I/A
system and the output values. Different tones represent the
various states:
INFUSION OPEN
Sound of a slow drip
ASPIRATION ACTIVE
Sound of a rapid drip, whose pitch rises as the vacuum level
increases.
VACUUM LIMIT REACHED
Short beeps
REFLUX (pump reversed)
A high-pitched, rapidly-repeating signal
DIATHERMY ACTIVE
High-pitched sequence of sounds, rising with increased
output
HF CUT ACTIVE
Low-pitched sequence of tones (IDK)
Medium-pitched sequence of tones (STT)
High-pitched sequence of tones (CAPSULOTOMY)
PHACO ACTIVE 1)
Repeating combination of three beeps
Volume control
Hold down the AUX button, and select a volume level
between 0-100% with the "SOUND" arrow buttons.
NOTE:
The CONTIN option can be selected in ParaProg for the acoustic
monitoring of the vacuum. The vacuum is then indicated by a wailing tone,
which rises as the vacuum value climbs to the set maximum value.
1)
If specified in ParaProg
9.3
Voice confirmation
Voice confirmation will notify you about the selected function
and values as well as about warnings and instructions. You
can set up the scope of voice information for each surgeon in
ParaProg, and switch each of the following messages
individually to silent:
Warnings and instructions (VOICE MESSG)
Confirmation of selected functions (VOICE MODES)
Confirmation of set values (VOICE VALUES)
Confirmation only of changed values (CHANGE)
In addition, you can specify whether the messages should be
given out automatically (VOICE AUTOM) or only when the
VOICE button is pressed.
Volume control