Operation In High Output Range (Peripheral Nerve Stimulator); Section 5 - Instrument Operation In Low Output Range; Low Output Range Patterns; Operation In Low Output Range - Halyard EZstim III Manuel D'utilisation

4.B. OPERATION IN HIGH OUTPUT RANGE
(PERIPHERAL NERVE STIMULATOR)
Figure 4.6: Connections for use as Peripheral Nerve
Stimulator (high output range)
1. If the EZstim*III is on, press the ON/OFF
off.
2. Set the Stimulus Control knob to the minimal current setting
(full counter-clockwise).
3. Attach the NSL-5 Interface Cable to the stimulator input
connector.
4. When removing the lead wire set, grasp the black connector
and pull it straight away from the unit. Do NOT remove the cable
by pulling on the wires.
5. Connect the surface electrodes (Figure 4.6).
a. Attach the lead wire snaps to the surface electrodes.
b. Peel the protective paper off each electrode and confirm
that the conductive gel on the electrode has not dried.
c. Apply the electrodes to clean, degreased and shaved skin.
6. Press the ON/OFF button to turn the unit on. The LCD displays
null mode functionality.
7. Select the desired output current mode of operation using the
buttons on the face of the unit. Refer to Section 2, General
Description and Specifications for detailed information on
button function.
8. Set the initial desired stimulus output by rotating the Stimulus
Control knob clockwise to increase current or counter-clockwise
to decrease current.
Caution: Always increase stimulus current gradually. Use
of currents greater than necessary for supramaximal stimulation
increases the risk of skin burns.
9. When the procedure has been completed, press the ON/OFF
button to turn the unit off, unclip the cable from the surface
electrodes and remove the electrodes from the patient's skin.
SECTION 5 – INSTRUMENT OPERATION IN LOW
OUTPUT RANGE (PERIPHERAL NERVE LOCATOR)
5.A. LOW OUTPUT RANGE PATTERNS
With the RBW-5U Patient Lead Cable connected, the
unit automatically sets to the LOW output range and
is then used to locate the target nerve with constant current 100
microsecond (0.1 millisecond) twitch pulses.
The user can toggle the pattern frequency between 1
Hz and 2 Hz (power ON default is 2 Hz) by pressing the
twitch mode button. The unit emits an audible chirp
with each stimulus pulse.
HIGH Current
Nerve Stimulator
Lead Wire Set
(NSL-5)
button to turn it
5. B. OPERATION IN LOW OUTPUT RANGE
Figure 5.2: Connections for use as Peripheral Nerve Locator
1. If the EZstim*III is on, press the ON/OFF
2. Set the Stimulus Control knob to the minimal current setting
3. Attach the RBW-5U Lead Wire Set to the stimulator input
4. Attach the lead wire snap to the surface electrode.
5. Press the ON/OFF button to turn the unit ON. An open lead
6. Set the initial desired stimulus output by rotating the Stimulus
2 Hz Twitch Pattern = 2 twitches per second
500 milliseconds
1 Hz Twitch Pattern = 1 twitch per second
1000 milliseconds
= 0.1 milliseconds
Figure 5.1: Twitch Patterns (LOW Output Range)
it off.
(full counter-clockwise).
connector.
NOTE: The surface electrode is connected to the red, positive (+)
polarity output connector for nerve location.
a. Peel the protective paper off the surface electrode and
confirm that the conductive gel on the electrode has
not dried.
b. Apply electrode to clean, degreased and shaved skin that is
not in the distribution area of the nerve being blocked.
condition is indicated by the flashing Stimulus Setting/Output
display and the audible 6-chirp indicator because the needle
and the surface electrode are not yet connected to the patient.
Control knob clockwise to increase current or counter-clockwise
to decrease current.
= 0.1 milliseconds
LOW Current
Nerve Locator/
Regional Block
Lead Wire Set
(RBW-5U)
button to turn
9