Biosensor
First 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.
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Accused Products
Abstract
A spacer forming method for a biosensor that has a biosensor possessing a capillary sampling channel and electrical connecting tracks for the use of a specific portable meter. A pair of electrodes is printed on an insulating base plate to be the transducer of the electrochemical biosensor by means of the screen-printing technology. The advanced thick-film printing technology is employed to construct the spacer component of the sampling channel that precisely controls the volume of a sample solution. Therefore, the spacer forming method reduces the usage of adhesive that otherwise causes a serious problem during a continuous punching procedure. Furthermore, the embedded switch pad on the biosensor is introduced to be instead of a micro switch in a connector of the portable meter.
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Citations
10 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification