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11-10
ClosureRFG Radiofrequency Generator
Biomedical Department Inspection and Power Output Test
• Clip the ESU tester to the red and black leads.
• Select 100 Ω impedance on the ESU analyzer.
• Place the red and yellow thermocouple wire and the reference thermometer into a
37°
C ± 3° C bath.
Test Method
1. Verify that the bath temperature and ESU analyzer load impedance are indicated on
the temperature and impedance displays.
2. Press the RF Start button to start the RF power sequence.
3. Verify that the bath temperature, ESU analyzer load impedance, and power indicated
on the temperature, impedance, and power displays on the ClosureRFG
radiofrequency generator are in agreement with the reference thermometer and the
ESU analyzer.
4. Turn off main power to the ClosureRFG generator. Remove the Test Cable and AC
power cord from the ClosureRFG generator.
5. In assessing the functionality of the ClosureRFG generator with any external
measurement system such as an ESU Analyzer, the measurement tolerances of the ESU
Analyzer for a given test must be added to the tolerances listed for the ClosureRFG
generator.
Power Delivery Verification
This test verifies the ability of the ClosureRFG radiofrequency generator to deliver RF
energy.
1. Attach a ClosureFast catheter to the ClosureRFG generator.
2. Fill a glass container with 0.9% saline solution heated to 37° C ±3° C (this simulates
the temperature and impedance of blood in a blood vessel).
3. Place the distal (heating element) end of the catheter in the saline such that the entire
RF coil is covered. Insure that the catheter coil is covered by the saline before and
during RF power delivery.
4. Press the catheter handle button on the handle to start RF treatment.
5. Verify that the ClosureRFG generator delivers power and that the setpoint temperature
is maintained during delivery.
Note:
The heating element in the beaker of saline may not reach the setpoint
temperature of 120° C. If so, completely and tightly wrap the heating element in a
paper towel, and tape it closed. Immerse this assembly in the beaker, cover it
completely with the saline solution, then return to step 4.