Patent ID: 8200307

Claim:
A device for measuring a parameter of living tissue, which parameter affects a response of said tissue to an electric field, comprising an electrode arrangement ( 5 ), a signal source ( 31 ) generating an electrical signal to be applied to said electrode arrangement ( 5 ) for generating an electrical field in said tissue, and a detector ( 37 , 38 ) for measuring a response from said tissue to said electrical field and for determining at least one parameter therefrom, wherein said device is adapted to generate at least two spatially different electrical fields (E 1 , E 2 ) in said tissue, and wherein said detector is adapted to determine said parameter from a difference of the responses of said tissue to said spatially different electrical fields, and further comprising a switching assembly ( 39 ) arranged between said signal source ( 31 ) and said electrodes ( 5 - i ) for selectively connecting at least a first and a second pattern of said electrodes ( 5 - i ) to said signal source ( 31 ).