A fluid handling module that is removably engageable with a bodily fluid analyzer is provided. This fixed shaft is constructed in a hollow and cylindrical shape having an opening in which one end portion thereof has been opened, and a ceiling surface in which the other end portion thereof has been closed, and one end portion of this fixed shaft is subjected to dislocation preventive work, and is fixed to a gear box made of resin by pressing-in or insert molding. Distributing a quantity of these sensor segments at desired locations along a flexible support structure and providing a flexible sheath over the entire length forms the sensor array.