The DB‑2202 Directional Lead has a total of eight Contacts per Lead, labeled 1 through 8 on each Lead. Contacts 1 and 8 are the distal and proximal Contacts,

respectively, while Contacts 2 through 7 are the small directional Contacts (segments) for each Lead.

To Steer along the DB2202‑Directional Lead:

1. Select Steering Mode.

2. Select a Contact to assign it as a cathode. You may create an equal spread of current across a Level of Contacts ("ring mode") by selecting anywhere

within that Level, then selecting the center button. To assign a single directional segment as the cathode, select anywhere within that Level, then select the

corresponding button (Figure 8).

3. Use the

and

buttons to incrementally steer the stimulation focus along the length of the Lead.

4. Select one of five preset directions

four orthogonal directions or put the stimulation field into "ring mode."

The following steps can be used to refine the applied directional preset or selected directional segment.

5. Use the

and

buttons to rotate and steer the stimulation focus circumferentially around the Lead.

6. Use the

and

buttons to radially spread or shrink the focus of the stimulation field.

7. To choose another starting point or to steer on another Contact, select another Contact. To select a segmented Directional Contact, select the Level, then

select one of the three labeled segmented Contacts around the circumference of the center button on the Directional Contact Selector.

Note: The total Amplitude for the selected Area will drop to 0 mA when another Contact is selected.

Note: Stimulation using multiple independent current control and the DB‑2202 Directional Lead is referred to as Cartesia 3D.

Custom Mode

Custom Mode allows you to assign a percentage of anodic or cathodic current to individual Contacts and the Stimulator Case.

To program the DB2201‑Standard Lead and the DB2202‑Directional Lead in Custom Mode:

1. Select Custom Mode.

2. Select the Stimulator Case or Contact that you want to adjust. If it was selected, one tap will assign it as an anode (+). Another tap will reassign it as a

cathode (‑). Another tap will reassign it as OFF (blank). Tapping on a Contact will first select it without changing the polarity.

Note: Changing the Contact polarities will reset the Amplitude to zero.

3. Select the + and – buttons for the Contact to adjust the percentage of anodic or cathodic current assigned to the selected Contact.

Note: When using the External Trial Stimulator (ETS), monopolar configurations are not possible since the ETS "case" cannot be assigned as a cathode or

anode.

Note: When using the ETS, Clinical Effects data is recorded but not plotted on the CEM.

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Figure 8. Directional Contact Selector

for the stimulation field. The directional presets will steer the fully focused stimulation field in one of

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