| CPC A61B 18/1492 (2013.01) [A61B 5/6858 (2013.01); A61B 2018/00375 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/1467 (2013.01)] | 15 Claims |

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1. A medical instrument, comprising:
a shaft for insertion into a body of a patient;
a first spine connected to the shaft, the spine comprising:
a first end that is connected to a distal end of the shaft; and
a circuit board substrate folded along a folding line; and
multiple electrodes disposed over the first spine, the multiple electrodes comprising a first electrode and a second electrode,
the first electrode and the second electrode being (i) disposed over diametrically opposing facets of the circuit board substrate, (ii) separated electrically and physically along the folding line, and (iii) electrically connected to one another by a via extending through the circuit board substrate.
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