Welch Allyn Electrosurgical Unit - User Manual - Manual (Page 17)

• The patient plate must securely contact a vascular area close to the operating
site. For a gynecology procedure the preferred sites are the patient's thigh (dis-
posable adhesive pads) or under the patient's buttocks (reusable metal plate).
Assure the contact area is clean, free of body lotions, shaved, and massaged for
good circulation. Maximize the contact area of the patient plate and frequently
check for uniform contact during the procedure, especially if the patient has
moved or if liquids have contacted the patient plate. A CONDUCTIVE GEL IS
RECOMMENDED. NEVER place the patient plate so that the patient's heart is
in the pathway from the active electrode.
• Power delivery to the operative site can decrease appreciably if alternate path-
ways exist; for example, through the metal operating table, crossed hand-
piece/patient plate cables, etc.
V. FOOT PEDAL SWITCH
Connect the foot pedal switch to the socket (2) without activating the pedal, and
tighten the threaded plug.
This is an air (pneumatic) operated control. There is no electric current, offering max-
imum safety.
VI. POWER CONNECTION, ELECTRODE CONNECTION
AND APPLYING POWER TO UNIT
(Refer to Diagram on Page 10)
A. Check that power input corresponds to the technical data on the back of the
unit. Plug the power cord into the appropriate grounded wall outlet, ensuring
that the ESU on/off switch is in the "OFF" position.
B. Connect dispersive patient plate to the socket (4).
C. Connect the active electrode handpiece to the socket (3) and tighten electrode
of choice in the handpiece.
D. Turn ON the unit by the power switch (1). The unit automatically performs a SELF
TEST that checks RAM memory, EPROM memory, supply voltage, signal modu-
lation and the following displays; function selector green lights, digital display, cut
and coagulant yellow light, coagulation blue light, and the audible signal.
When the unit passes SELF TEST the display will show current software revision
i.e., r2A, r2B for several seconds then goes blank.
IV. PLACEMENT OF THE PATIENT PLATE
OR DISPERSIVE ELECTRODE (cont.)
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Electrosurgical Unit • Instruction Manual