CS-3000 RF Generator Unit Operator Manual
AtriCure, Inc.
IFU-0022.A
2021/04
Page 6 / 12
Symbols and Icons
Manufacturer
Catalog Number
VAC
Vacuum
RF
Radiofrequency
Keep Upright
Perfusion
Equipotentiality Con-
nection
Defibrillation Proof Type
CF Applied Part
Indifferent, Dispersive
Electrode
Caution
Caution: Electrical Shock
Hazard
Footswitch Connection
W
Watts
Non-ionizing Radiation
Time
Ω
Ohms
Follow Instructions for
Use
s
Seconds
Serial Number
Alarm Volume Control
~
Alternating Current
Neutral Electrode Isolated
from Earth
+
Control Buttons to In-
crease Power or Time
0
AC Power Switch OFF
-
Control Buttons to De-
crease Power or Time
l
AC Power Switch ON
Protective Earth Terminal
OC
Measurement Out of
Range
Separate Collection for
Electrical Equipment per
WEEE Directive
2797
Product complies with the
requirements of directive
93/42/EEC
EC REP
Authorized Represen-
tative
Dangerous Voltage
104°F
(50°C)
50°F
(10°C)
Operating temperature
range
140°F
(60°C)
-30°F
(-34°C)
Storage temperature
range
75%
30%
%
Operating humidity range
85%
30%
%
Storage humidity range
1060 mbar
700 mbar
Operating pressure range
Storage pressure range
NON
STERILE
Non-Sterile
Non-ionizing electromag-
netic radiation
Federal (US) law restricts this device to sale by or on the order of a
physician.
Chapter 1 Introduction
Overview
The nContact Model CS-3000 RF Generator Unit transmits a high-frequency alter-
nating current through a coagulation device to coagulate soft tissue. The RF current
induces ionic agitation in the tissue causing molecular friction and producing heat.
Thus, the heat is generated in the tissue and not in the device.
As the temperature in the tissue increases, tissue coagulation occurs leading to cell
necrosis. The tissue temperature and volume of coagulated tissue are affected by
the amount of Power delivered, the surface area of coagulation device contacting
the tissue, and the duration of energy delivery.
The generator operates in either the
Power Control
or
Diagnostic Evaluation
mode. When operating in Power Control mode, set the desired duration and Power
level. The generator will transmit Power at the set point for the Time set by the
operator. Power may be adjusted manually throughout the treatment to tailor the
coagulation process but caution should be used when deviating from the recom-
mended, pre-set power settings.
Product Description
The nContact Model CS-3000 RF Generator Unit is an electrosurgical generator that
transmits RF current at a frequency of 480 kHz. The generator transmits up to 100
watts (W) of Power (+/- 20%), depending on the coagulation device connected. While
the RF Energy is delivered, Power, Impedance, and Time are continually measured
and updated on the generator display.
Figure 1 shows the Power versus Impedance curves at set power levels of 100 Watts
and 50 Watts. The RF Generator operates between 30 and 500 ohms. The RF
Generator produces constant power along the operational impedance range. Figure 2
shows the relationship between Voltage and Impedance. Figure 3 shows the relation-
ship between Set Power and Delivered Power at an impedance of 275 ohms.
Power & Voltage Output Diagrams
Figure 1. Power Output versus Impedance Load
Figure 2. Voltage versus Impedance Load
Figure 3. Delivered Power versus Set Power
Generator Operating Modes
1. Standby mode – The generator is idle; no energy is delivered, no measure-
ments are performed. The software version is identified.
2. Ready Power Control mode – The generator detects the type of coagulation
device connected and determines initial Power and Time set points according-
ly. These preset Power and Time levels can be adjusted by the operator.
3. RF ON Power Control mode – The generator transmits a constant Power level
until the elapsed Time equals the set point or an error is detected.
4. Diagnostic Evaluation Mode – RF energy is NOT transmitted to the coagu-
lation device during this mode. Measurements of resistivity are taken from
electrodes on a separate accessory device (not yet available) to indicate the
extent of coagulation necrosis.