The present invention relates to a sensor element (1), which comprises a sensor section (2) comprising a sensor unit (3) configured to measure a physiological variable or any other signal in a living body and to generate a sensor signal in response to said variable or other signal, a bond section (5) comprising contact members configured to electrically connect at least one signal transmitting microcable, wherein the bond section is coated with an electrically insulating material (18) and the sensor section is left uncoated. The sensor element may further comprise an intermediate section between said sensor section and said bond section, including electric connection lines (19) configured to connect the contact members to the sensor unit, which intermediate section is also coated with said electrically insulating material. The invention further relates to a sensor wire and a method of producing a sensor element.