Miniature external temperature sensing device for estimating subsurface tissue temperatures

A temperature sensor, comprising:

• a sensor body for measuring a temperature of a user, the sensor body comprising:
• a first section defining a first lower surface that is offset from a first upper surface;
• a second section defining a second lower surface that is offset from a second upper surface, wherein a first thickness between the first lower surface and the first upper surface is greater than a second thickness between the second lower surface and the second upper surface;
• and
• a first channel between the first lower surface and the second lower surface;
• a second channel between the first upper surface and the second upper surface:
• a first set of temperature sensors positioned on the first section;
• a second set of temperature sensors positioned on the second section;
• and
• a processor configured to estimate a tissue temperature of the user based on comparing temperature signals from the first set of temperature sensors with temperature signals from the second set of temperature sensors.

A temperature sensor, comprising:

• a sensor body for measuring a temperature of a user, the sensor body defining:
• first and second lower surfaces that are configured to be placed against a skin of the user;
• a first upper surface offset from and opposite the first lower surface;
• a second upper surface offset from and opposite the second lower surface, wherein a first thickness between the first lower surface and the first upper surface is greater than a second thickness between the second lower surface and the second upper surface;
• and
• a first channel positioned between the first and second lower surfaces;
• a second channel positioned between the first and second upper surfaces:
• a set of temperature sensors that are configured to measure temperatures at the first lower surface, the second lower surface, the first upper surface, and second upper surface;
• and
• a processer configured to estimate a tissue temperature of the user based on the temperature measurements from the set of temperature sensors.