Neurodiagnostic needle electrode pair assembly and method of manufacture

A method of manufacturing a neurodiagnostic needle electrode pair assembly, the method comprising:

• connecting a pair of needle electrodes to a pair of leadwires by forming respective electrical connections between proximal ends of the needle electrodes and distal ends of the leadwires;
• extending the needle electrodes into and through parallel holes of a needle spacer, the parallel holes defining a spacing between the needle electrodes;
• positioning a heat shrink tube over the needle spacer, the respective electrical connections and the distal ends of the leadwires;
• applying heat to recover the heat shrink tube covering the needle spacer, the respective electrical connections, and the distal ends of the leadwires and
• wherein before the pair of needle electrodes are extended into and through the parallel holes of the needle spacer, the method further comprises:
• extending the needle electrodes into and through second parallel holes of a leadwire spacer, and the respective electrical connections and the distal ends of the leadwires into the second holes that define a spacing between the leadwires.