Axium Clinical Programmer Manuel de l'utilisateur - Page 10

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• Electrode Configuration: Each lead has four

electrodes each of which can be programmed

with a positive or negative polarity, or be

programmed as neutral (off). There must

be at least one positive and one negative

electrode before the Clinical Programmer

allows the amplitude to be adjusted and for

the lead to be enabled.

1. Select one of the four electrodes by

clicking on it using the stylus. Clicking

once will turn the electrode posi tive

("+"), clicking it twice will turn it negative

("-") and clicking it three times will turn

it Neutral ("N") again. To exit from the

electrode editing mode, click on the

neighboring Impedance box.

2. Continue by setting each of the

implanted leads with at least one

positive and one negative electrode for

each body region to be treated.

• Impedance: Press the "Instant Impedance"

button ("Ω") to measure the lead's impedance.

Once pressed, the impedance value will

be displayed underneath the button. If you

want the NS to use this Instant Impedance

value for therapy delivery, press the "Transfer

Instant Impedance" button ("→").

NOTE: A transferred impedance value is

required before other stimulation parameters

can be selected.

• Enable: Select "ON" to enable the lead so

that it provides stimulation therapy to the

patient. Select "OFF" if the lead is not being

used.

o When Enable is ON, the "ON" button

will turn the color green.

o When Enable is OFF, the "OFF"

button will turn the color black.

o The button border is red if the

activation state is different from the

programmed value.

WARNING: Once Enable is ON for this

target, any parameter change will be

immediately active.

NOTE: When the lead electrode configuration

changes, the lead is disabled and the

amplitude is automatically changed to zero.

The lead electrode configuration must be

valid prior to activating the lead. A valid

lead configuration must include at least one

positive and one negative electrode. Lead

"Enable" must be "ON" before the amplitude

can be increased from 0 µA.

• Location: Enter the spinal level where stimulation therapy is delivered by this lead

• Pulse Parameters: To select and change pulse parameters, first press the desired increment

level: Fine(>), Medium(>>), Coarse(>>>).

▪ Amplitudes below 2.0 mA (>: 25 µA, >>: 50 µA, >>>: 200 µA)

▪ Amplitudes above 2.0 mA (>: 50 µA, >>: 100 µA, >>>: 400 µA)

▪ Pulse Width (>: 20 µs, >>: 40 µs, >>>: 100 µs)

▪ Frequency (>: 2 Hz, >>: 4 Hz, >>>: 10 Hz)

▪ The UP( Λ ) and Down( V ) buttons next to the specific pulse parameter will allow the user to

change the setting at the desired increments.

The following table lists the pulse parameters, their range, increments and default value:

Specifications

Range

Pulse Amplitude - PA (µA)

0 – 6000 µA

(Depending on measured impedance)

Maximum Pulse Amplitude - Max

Same as PA

(µA) Programmable by Patient

Pulse Width – PW (µs)

40 – 720 µs

Pulse Frequency - PF (Hz)

4 – 80 Hz

• Maximum Amplitude: Enter the maximum stimulation amplitude, from the clinically set amplitude

up to 6.0 mA, that the patient is allowed to set for each lead.

WARNING: Unless the stimulation settings are known for a specific patient, start with a

Pulse Amplitude of 0 µA.

• Stimulus Response: Allows you to assign a descriptor to a set of programmed pulse parameters.

The descriptor is composed of a body region where the sensation is felt and a description of the

sensation. (E.g. Upper Back & Massaging → Upper Back Massaging). A Stimulus Response must

be selected in order to Program the set of pulse parameters. The Load Other button pulls down a

drop-down menu and allows the user to load another Stimulus Response that has been previously

saved for that lead.

NOTE: When restarting stimulation, increase the amplitude slowly until the desired effect is

achieved.

Step Size

Default Value

25 µA: 0-2000 µA

0 µA

50 µA: 2000-6000 µA

Same as PA

0 µA

20 µs

300 µs

2 Hz

2 0 Hz