3 Functionality
900-350_IFU_V2.6_10296-S13-20100111-EN ARC 300 / ARC 350 Operating manual 25
3. Functionality
The HF device is controlled by a microprocessor and converts the mains
voltage into a high-frequency alternating current for monopolar or
bipolar applications.
The arc control technology reduces the power output depending on the
tissue and its resistance to the necessary minimum.
Pos: 15 /679-BOWA/ARC 300/35 0/4 Funktionsweise/ 4.1 Monopolare Modi @ 4\mo d_1261040443506_6.doc @ 34634 @ 233333
3.1. Monopolar modes
In monopolar operation, the HF device has the following operating
modes:
• "Cut" for cutting in low-resistance tissue
• "Moderate Coag" for contact coagulation and "Forced Coag"
for coagulation with semi-contact
• "Spray Coagulation" for contactless surface coagulation
Two monopolar outputs facilitate the independent configuration of two
instruments.
Instruments can be connected to the monopolar outputs 1 and/or 2
(socket 36 and/or 40). The desired output is activated by pressing the
key/display 35 or 39 (for “monopolar output 1 or 2“).
3.1.1. "Cut" mode
In this mode, a high-performance HF current of up to 300 W with a low
crest factor is used for cuts in biological tissue. The ARC CONTROL
quickly adjusts the power output to the variations in tissue and changes
in the cutting surface or speed to the relevant required minimum.
When setting the blend function between Level 0 and 9, it is possible to
set a variably adjustable degree of surface scabbing.
3.1.2. "Moderate Coag" mode
If you wish to change the settings of the "Moderate Coag" mode, see
Chapter Menu program 3 "Moderate Coag Mode", page 59.
This mode is used in contact coagulation for stopping hemorrhagic
oozing, hemostasis of larger tissue areas, and coagulation over smaller
surfaces.
The coagulation effect of the "Moderate Coag" current is adjusted in this
mode.
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