Apparatus, method and system for determining a physiological condition within a mammal

An apparatus for measuring a physiological condition within a mammal comprising:

• an elongated tubular housing extending along a longitudinal axis from a distal end to a proximal end;
• and
• an ion-sensitive field effect transistor (ISFET) for measuring pH within a body lumen of the mammal, the ISFET located on a distal portion of the elongated tubular housing and having at least a portion of the ISFET exposed for contact with fluid of the body lumen;
• a memory device located within the elongated tubular housing, the memory device storing parametric data unique to the pH sensor;
• and
• wherein the parametric data includes first ISFET slope data determined at ambient temperature and second ISFET slope data determined at normal body temperature.

An apparatus for measuring a physiological condition within a mammal comprising:

• an elongated tubular housing extending along a longitudinal axis from a distal end to a proximal end;
• an ion-sensitive field effect transistor (ISFET) for measuring pH within a body lumen of the mammal, the ISFET located on a distal portion of the housing and having at least a portion of the ISFET exposed;
• a temperature sensor for measuring temperature within the body lumen, the temperature sensor located on a distal portion of the housing and having at least a portion of the temperature sensor exposed;
• a memory device storing parametric data unique to the pH sensor, the parametric data includes first ISFET slope data determined at ambient temperature and second ISFET slope data determined at normal body temperature;
• a first interface connector operably coupled to the ISFET, the temperature sensor and the memory device, the first interface connector located at the proximal end of the housing;
• and
• a first circuit board located within the housing, the ISFET, the temperature sensor, the memory device and the first interface connector operably coupled to the first circuit hoard.