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3-4
ClosureRFG Radiofrequency Generator
Starting RF Treatment
Advisory Limits with ClosureFast Catheters
•
Temperature
– Below 30° C when starting RF treatment.
– This occurs if the catheter hasn’t been at 30° C or above since it was connected,
implying it’s not in the patient. The operator can override this warning.
When the screen shows a Low Temperature warning, adjust the catheter or the
application site if appropriate. Then, press the Green Check Mark button.
– Below 100º C after several seconds of treatment. RF power stops before the
countdown has completed. This likely indicates a condition of poor contact
between the catheter and the tissue being treated (such as placement within the
deep vein, or inadequate vessel exsanguination).
– Falls below 118º C for more than 2 seconds after the setpoint temperature (120º
C)
is reached.
– Above 125º C for 1-5 seconds (calculated during the time the limit is exceeded),
Note:
For more information, see
Functional and Advisory Limits
on page 2-8
Starting RF Treatment
Note:
Review this section and
General Safety Guidelines
on page 10-1 before starting RF
treatment.
Caution
Do not activate RF power until the catheter is properly positioned in the patient.
Important
Before starting RF treatment, thoroughly read the catheter’s instructions for use. Confirm that the
connected catheter matches the catheter type shown at the top of the Data Display area.
RF treatment can be stopped at any time, if necessary, by pressing the catheter handle button.
Note:
The Treatment Summary, which is the accumulated time and cycles that the
ClosureRFG radiofrequency generator applies power, can be displayed in the data area.
Select this option in the Generator Setup screen.
1.
Press the catheter handle button to start RF treatment.
This starts RF delivery, and
changes the RF power icons to blue (1 in the following illustration). The RF-start tone
sounds.
a. The catheter temperature (2) increases toward the setpoint (120° C) and the timer
(3) starts counting down.
b. The RF ramp-up tone sounds for five seconds.