Patent ID: 6787013
Filing Date: 2004-09-07
Classification: A61B,C12Q,G01N,Y10T

Abstract:
A biosensor comprising:a substrate (1) formed as a base of the biosensor; an anode conducting track (2) and a cathode conducting track (2â€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 (4,4â€²) disclosed on the corresponding conducting track (2,2â€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 (4,4â€²) 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.