ClosureRFG Radiofrequency Generator
9-5
System Overview
Technical Specifications
List of Circuit Boards
The ClosureRFG radiofrequency generator consists of six main PCBs which make up the
five subsystems:
• UI Board (contains UI Processor and LCD Touch Screen electronics)
• I\O Board
• RF Board
• AC Power Supply
• Fan Controller
• RF Delivery Indicator PCB (Left and Right)
UI Board
The UI board contains the system processor, touch drivers, and touch screen interface. The
UI board is a major component of the UI assembly that is mounted on the front of the
chassis. It’s is located inside a metal shield with the touch screen, and is accessible through
the rear-door hatch. The UI assembly runs the ClosureRFG generator’s system software
stored in flash memory. It controls all electronics that handle basic system operation and
the user interface, including all the system’s audio and visual indicators.
I/O Board
The I/O board is the large (approximately 8.5” x 5.5”) electronic assembly that mounts to
the back of the UI assembly. It supplies 12 volts to the UI assembly and provides access to
all the important signals coming from it. The I/O board provides the communication
interface between the RF board and UI assembly and contains all the user accessible ports
(Ethernet, SD Card, and USB). It provides interfaces for the system speakers, RF Delivery
Indicators, and Power-ON LED.
RF Board
The RF board is the large (approximately 8”x 6”) PCB mounted vertically on the rear panel
of the inner metal chassis. It controls all electronics that generate the RF power used to
drive the treatment catheters. Additional safety signals and control are provided by the I/
O board through the 16 conductor cable that runs between them. The isolation circuitry
for all patient connections is on this board.
AC Power Supply
A commercially available, medical grade switching power supply is used to provide low-
voltage power to the ClosureRFG radiofrequency generator’s internal circuitry. The AC
Power Supply is the PCB assembly (approximately 5”x 3”) mounted on the bottom of the
inner metal chassis. It accepts 110-240 VAC, 50/60 Hz (nominal) and generates 24 volts
to drive the RF-treatment system and 12 volts to drive the cooling system.
