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ClosureRFG Radiofrequency Generator
General Description and Operating Conditions
Fan Controller
The Fan Controller is a small (approx.1.7” x 0.9”) PCB assembly mounted on the rear panel
of the inner metal chassis. It measures the temperature inside the ClosureRFG generator
and activates the fan when the temperature reaches the trip point. The fan controller
keeps the fan on until the temperature drops to the shut-off set point, with a hysteresis of
about 10° C.
RF Delivery Indicator PCB
The RF Delivery Indicator PCB assembly is a small (approximately 1.8” x 0.6”) board that
contains three blue discrete chip LEDs. There are two of these assemblies, mounted on the
inner metal chassis on the top left and right corners of the touch display. The assemblies
are mirror images and therefore not interchangeable.
General Description and Operating Conditions
Warning
Do not operate the ClosureRFG generator in the presence of a flammable anesthetic mixture with
air, oxygen, or nitrous oxide.
Do not operate the ClosureRFG generator in contact with flammable materials, chemicals, or
substances.
• The ClosureRFG radiofrequency generator should be used only with a hospital-grade
power cord and plugged into only grounded, hospital-grade AC sources.
• Class 1, Type CF, Defibrillator-Proof Applied Part.
• Plastic and Metal Enclosure.
• Service Port is user-accessible but is for factory use only. Service Port is covered by a
rubber cover that can only be removed with a tool.
• Metal Enclosure is Protective Earth.
• Patient Connection is Bipolar Catheter.
• Isolated Patient Connections include heating device, thermocouple, and ID resistor.
• The ClosureRFG generator cannot be sterilized and must not enter a sterile surgical
field.
• The display has touch screen, with no protective plastic cover.
• The display backlight operates with 11 VDC at 150 mA. Over the display is a 4-wire
resistive touch-sensitive mesh, which is a low-voltage (<3.4 V) sensing grid.
• SD and USB devices are typically plastic of unknown insulation properties and are
operator-accessible when the ClosureRFG generator is powered.
• SD and USB pins are not user accessible.