Biosensor

Claim 1

A biosensor comprising: a substrate ( 1 ) formed as a base of the biosensor; an anode conducting track ( 2 ) and a cathode conducting track ( 2 ′) mounted on the substrate ( 1 ) to be a working electrode conducting track and a counter electrode conducting track respectively; a pair of electrode tracks ( 4 , 4 ′) disclosed on the corresponding conducting track ( 2 , 2 ′) to provide a suitable surface for electrochemical measurement of the biosensor; a switch comprising a switch pad ( 5 ) and a conducting pad ( 3 ), wherein the switch pad ( 5 ) is constructed on a conducting pad ( 3 ), and the switch controls actuation of the electrical system when the biosensor is inserted in a connector of a meter; an insulating layer ( 6 ) disposed on the electrode tracks ( 4 , 4 ′) and the switch pad ( 5 ), and having an opening defined therein to construct a reaction area ( 7 ) and a connecting area ( 14 ); a spacer layer ( 9 ) disposed on the insulating layer ( 6 ) and having a simple ditch ( 10 ) defined in the spacer layer ( 9 ) to correspond to the reaction area ( 7 ) and construct walls of the reaction area ( 7 ) to guide the sample solution flow; a reagent layer ( 8 ) disposed on the reaction area ( 7 ) and re-dissolved rapidly when the reagent layer ( 8 ) contacts with the sample solution; a protecting layer ( 11 ) having a hydrophilic membrane adhered on one face directed toward to the biosensor and traversely mounted on the sample ditch ( 10 ) of the spacer layer ( 9 ) to form an inlet port ( 15 ) and an outlet port ( 16 ) so that a sampling channel ( 13 ) is constructed inside the biosensor.