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Boston Scientific Visual-ICE Manuel D'utilisation page 53

Systeme de cryoablation

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OPTIONAL: To initiate a freeze phase on all needles simultaneously, press the Freeze button on the channel labeled
ALL� Pressing any function button on the channel labeled ALL displays a message asking you to confirm simultaneous
operation of all needles�
NOTE: Selecting ALL will initiate a Freeze phase at the intensity selected for each channel� To conduct freezing in all
active channels at the same intensity, select the intensity in the ALL channel before pressing the Freeze button�
6� Watch the timer to monitor the freeze phase elapsed time (reference the Channel Status Section for instructions
on enlarging the timer display)� When the desired freeze duration has elapsed, press the Stop button to enter
an idle phase�
7� If thermal sensors are used, monitor the tissue temperature using the Temperature Sensors Section of the
Procedure Screen (reference the Temperature Sensors Section)�
8� To actively thaw the iceball, press the Thaw button on the channels containing needles to start the thaw phase�
If the Visual-ICE Cryoablation System detects that helium gas is connected, the system defaults to helium thaw
mode� If needles of mixed type (some helium thaw and some i-Thaw Function) are connected, the system also
defaults to helium thaw mode�
NOTE: When thawing with CX-type needles, thawing is limited to a maximum of 7 needles simultaneously activated�
Thawing with the FastThaw Function is limited to a maximum of 4 needles simultaneously (reference the i-Thaw
Function and FastThaw Function Control for CX-type Needles Section for instructions on using i-Thaw Function
and FastThaw Function)�
OPTIONAL: To initiate a thaw phase on all needles simultaneously, press the Thaw button on the channel labeled
ALL� Pressing any function button on channel labeled ALL displays a message asking you to confirm simultaneous
operation of all needles�
9� Watch the timer to monitor the thaw phase elapsed time (reference the Cycle Programming Control Section for
instructions on performing a timed thaw phase)� When the desired thaw duration has elapsed, press the Stop
button to enter an idle phase�
10� Repeat steps 4 through 9 until the desired number of freeze-thaw cycles has been completed�
WARNING: Ensure adequate thawing or cooling before attempting to remove needles from the patient�
11� Remove all needles and MTS from the patient�
12� Unlock the locking bar(s) and remove all needles and MTS from the needle connection panel�
13� Dispose of used needles and MTS in a biohazard container in accordance with hospital and safety regulations�
14� When the procedure is complete, press the End Procedure button on the Procedure Screen � Three messages
appear requesting action:
• Confirmation to end the procedure – Press the Yes button to end the procedure�
• Request to save a report – Press the Yes button to save a report�
• Request to automatically vent the high-pressure gas – Press the Yes button to automatically vent the system�
The system prompts you to close the gas supplies before venting� The automatic venting takes approximately
1�5 minutes� Before initiating automatic venting, warn others in the vicinity to expect a venting noise�
WARNING: If the needles are still connected, do not unlock the channels or disconnect the needles from the needle
connection panel until all operations in the channel have completed�
15� If you are ready to shut down the system, reference the Shutting Down the System Section for the system
shutdown procedure�
53
Black (K) ∆E ≤5.0

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