P000463.F
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4.4.2.
Position the Handpiece
To position the Handpiece, follow the Instructions for Use provided with the Handpiece.
4.4.3.
Deliver RF Energy
Press the Footswitch to initiate RF energy output. RF energy output is terminated by
releasing the Footswitch or at the end of 40 continuous seconds of energy delivery. The
display screen of the ASU will indicate that the generator is in the RF ON mode.
See Figures 8 and 9.
During the Isolator
clamp operation, a real-time graph of measured tissue conductance is
displayed on the LCD graphics screen, and measured temperature is shown on a numeric
display. Using measurements of conductance, the ASU will determine when a
transmurality condition has been achieved.
When this condition has been achieved, the Blue Transmurality indicator will flash and the
audible tone emitted from the ASU will change from constant to intermittent, thus
signaling to you that transmurality has been achieved. If you do not release the Footswitch
within 40 seconds, the system will automatically time-out and stop the ablation.
Figure 8 – Conductance Display Graph Indicating RF ON Mode
With the Isolator
Transpolar
pen and Coolrail™ linear pen, a real-time graph of
measured power delivered to the tissue is displayed on the LCD graphics screen. The ASU
will not indicate when a transmurality condition has been achieved in this mode.
Furthermore, if you do not release the Footswitch within 40 seconds, the system will
automatically time-out and stop the ablation.