Biosensor, measuring instrument for biosensor, and method of quantifying substrate

摘要

A method of measuring a quantity of a substrate contained in sample liquid is provided. This method can reduce measurement errors caused by a biosensor. The biosensor includes at least a pair of electrodes on an insulating board and is inserted into a measuring device which includes a supporting section for supporting detachably the biosensor, plural connecting terminals to be coupled to the respective electrodes, and a driving power supply which applies a voltage to the respective electrodes via the connecting terminals. One of the electrodes of the biosensor is connected to the first and second connecting terminals of the measuring device only when the biosensor is inserted into the measuring device in a given direction, and has a structure such that the electrode becomes conductive between the first and second connecting terminals due to a voltage application by the driving power supply.

主权项

1. A biosensor comprising:
a first board having an end; an electrode provided on the first board; a second board having an end; and a spacer provided between the first board and the second board, the spacer having a notch that extends from the end of the second board and provides a sample supplying path between the first board and the second board, wherein the spacer is coextensive with the end of the second board, and the spacer and the second board protrude beyond the end of the first board, wherein the electrode provided on the first board extends to the end of the first board at the sample supplying path, and wherein the end of the first board has a straight edge.