Sutter CURIS 36 0 00-01, Инструкция по эксплуатации

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CURIS
®
Instructions for Use
3
the patient or in body recesses such as the navel or body cavities such as the vagina.
Wipe up liquid that has accumulated in these areas before using the RF device. There is
a risk that endogenous gases may ignite. Materials saturated with oxygen such as cotton
wool and gauze may be ignited by the sparks that form during the intended use of the
RF device.
Combinations with other devices may only be realized by the manufacturer or with the
manufacturer’s consent.
The operation of the RF device may interfere with other electromedical devices.
In principle, one differentiates between two electrosurgical effects:

Electrosurgical cutting

Electrosurgical coagulation
Electrosurgical cutting
With electrosurgical cutting, a high current concentration occurs at the transition between the
electrode and tissue, leading to very rapid heating at that point. This causes water vapor to escape
from the tissue. The release of vapor separates the tissue from the electrode, creating an insulating
layer. This layer needs to be electrically penetrated by ionizing the steam so the current can
continue to flow. Now physical effects occur in this water vapor layer, which has become electrically
conductive, leading to tissue separation. If the tissue contains only little or no water, then this
cutting process only works moderately or not at all. This method is used to sever or resect tissue
using blade or needle-shaped electrodes, or wire or tape loops.
Electrosurgical coagulation
Two active principles are generally differentiated for electrosurgical coagulation. When the current
from the electrode enters the tissue, the tissue at that point is heated by electrothermal energy
conversion (resistive heating). This is used to denature (coagulate) tissue for surgical purposes or
to stop major bleeding (hemostasis). This type of electrosurgical coagulation is called contact
coagulation, and is carried out using a ball or plate-shaped electrode or the flat side of a blade-
shaped electrode.
Another possible application is the targeted destruction of tissue using piercing electrodes, which
in this case can postoperatively lead to a desired volume reduction in the tissue (radio frequency
volume reduction: RaVoR™).
In the bipolar application, the electrode pair is frequently carried out as tweezers or forceps, often
designed for special preparations.
A different coagulation effect occurs when the voltage on the active electrode is so high that sparks
can form from the electrode to the tissue. Low ends form at the ends of these sparks. Within them,
the temperature is extremely high, but the temperature gradient from the inside to the outside is
also extreme so that coagulation only takes place in a thin layer on the surface. This allows large-
scale hemostasis with only minor depth damage to the tissue to be achieved. This type of