Erbe ERBOTOM ICC 350 M, Инструкция по эксплуатации

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4-1
4 DESCRIPTION OF THE HIGH-FREQUENCY SURGICAL UNIT
4.1 General description
Cutting with automatic control of the HF voltage (Auto Cut)
The ERBOTOM ICC is equipped with automatic open and closed loop control systems which
control and regulate the parameters relevant to the cutting quality so that each respectively selected
cutting quality is guaranteed to be reproducible and constant.
Adjustable power limitation in the cutting mode
Since the ICC units are equipped with automatic control of the HF voltage in the cutting mode,
a power setting in regard to cutting quality is not required. The adjustable power limitation is
primarily intended to guarantee the safety of the patient from unintentional thermal tissue damage,
and to protect fine cutting instruments, such as fine needle electrodes, from destruction due to
overly high HF currents if these come in contact in activated condition with other metallic
instruments. The latter, for example, is a risk during laparoscopic operations. This adjustable
power limitation must not be confused with the power setting for conventional high-frequency
surgical units, where the cutting quality is directly dependent upon the power setting.
Monopolar and bipolar cutting modes
With the ERBOTOM ICC 350, both monopolar and bipolar cutting electrodes can be operated.
A special operating mode is available for the users of bipolar cutting electrodes, which can be
called up as program “b“.
Cutting with automatic control of the electric arc (HIGH CUT)
HIGH CUT is especially suitable for cutting in tissue with poor electric conduction. Since the
HF voltage in the HIGH CUT mode can attain high values on the active electrode, HIGH CUT
should however only be used with electrically well insulated instruments when cutting in tissue
with poor electric conduction. For bipolar or quasibipolar cutting, HIGH CUT is not recommended
inasmuch as the insulation paths for bipolar and quasibipolar instruments are generally very
small and must not be exposed to higher voltages. For bipolar and quasibipolar instruments,
automatic voltage control is recommended.
PPS (Power Peak System)
The initial incision phase can represent a special problem during an incision, particularly if the
cutting electrode is firmly pressed against the tissue to be cut before activating the HF generator,
so that the cutting electrode has a relatively large-surface, and therefore low-resistance, contact.
This is the case, for example, for TUR and for endoscopic polypectomy. In such cases, the HF
generator must provide higher-than-normal power so that the initial incision can proceed without
delay, for otherwise a very large coagulation necrosis may result at the cutting location. The ICC
is equipped with an automatic power control which recognizes low-resistance loads and controls
the HF generator in such a way that it briefly provides enough power so that the HF voltage, i.e.
the intensity of the electric arc, required for the set cutting quality is ensured even for a low-
resistance load. Thanks to this device, the average power can be limited to relatively small
quantities, which corresponds to an improvement in protection from unintentional thermal tissue
damage.