The tined lead model 3889, a component of the InterStim system, has a blue tip for improved visual confirmation that the lead is fully inserted into the device header (when used with model 3058). Increased stiffness on the proximal end makes it easier to insert the lead into the InterStim II neurostimulator header or the InterStim neurostimulator extension.

The tined lead model 3889 contains 4 cylindrical electrodes equal in length and spaced equidistantly. This differs from InterStim tined lead model 3093 in which electrode 1 (the electrode second from the distal end) is an extended (coiled) electrode approximately 3 times longer than the other 3 cylindrical electrodes.