Covidien Force FX, Руководство по обслуживанию

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Functional Overview
Principles of Operation
Force FX Electrosurgical Generator C Service Manual
4-3
Functional Overview
The Force FX Electrosurgical Generator C is specifically designed to cut and coagulate
(desiccate and fulgurate) tissue during bipolar or monopolar electrosurgery.
During electrosurgery, radio frequency (RF) current flows from the generator to an active
electrode, which delivers the current to the patient. The resistance to the current,
provided by the patient’s tissue and/or the air between the active electrode and the
tissue, produces the heat that is necessary for the surgical effect. The RF current flows
from the active electrode, through the patient’s body tissue to the return electrode,
which recovers the current and returns it to the generator.
Instant Response Technology
The Force FX Electrosurgical Generator C automatically senses resistance and adjusts the
output voltage to maintain a consistent tissue effect across different tissue density. This
adjustment is based on the selected mode (bipolar or cut modes only), the power setting,
and the level of tissue resistance. For details, refer to
Instant Response Algorithm
on
page 4-12.
Ultrasonic Electrosurgery
The Force FX Electrosurgical Generator C works in conjunction with the CUSA EXcel for
procedures where ultrasonic electrosurgery is desirable. When you connect a CUSA
handpiece with CEM nosecone to the generator for ultrasonic electrosurgery, the
generator limits the monopolar output power automatically.
• The maximum power setting for monopolar cut is 100 W.
• The maximum power setting for monopolar coag is 70 W.
When you activate the handpiece for cut or coag output, the Low cut mode or the
Desiccate coag mode is in effect automatically. The remaining cut modes and coag
modes are not available.
For more information, refer to
CEM Mechanism Switch
on page 4-13
and CEM Switch
Circuit
on page 4-15
.
Simultaneous Coag
When you simultaneously activate two monopolar instruments for coag output, each
receives a percentage of the coag power setting set for the selected mode. The amount
of power each instrument receives depends on the tissue resistance sensed by the
generator at each surgical site. Generally, the site with lower resistance receives
proportionately more power. The combined total output power does not exceed the
coag power setting.