Non-linear single axis navigation sensor with strain relief

A mapping catheter comprising:

• an elongated support member extending through a distal section of the mapping catheter and comprising a nonlinear predetermined configuration to which the elongated support member moves when the distal section is disposed within a patient;
• and
• a single axis sensor (SAS) assembly comprising:
• a tubular member surrounding the elongated support member,
• a distal inductive coil affixed to the tubular member and coaxial to the tubular member,
• a proximal inductive coil affixed to the tubular member, coaxial to the tubular member, and separated from the distal inductive coil such that the distal inductive coil moves in relation to the proximal inductive coil when the elongated support member moves to the nonlinear predetermined configuration,
• a first dual cable electrically joined to leads of the distal inductive coil and wound over the tubular member to cross the proximal inductive coil, the first dual cable further being wound about an elbow of the distal section of the mapping catheter;
• and
• an intermediate inductive coil affixed to the tubular member, coaxial to the tubular member, positioned between the distal inductive coil and the proximal inductive coil when the elongated support member is linearly elongated, the first dual cable being wound over a distal end of a first protective tube, the first protective tube covering the intermediate inductive coil.