| 摘要 |
[PROBLEMS] To enable direct and accurate examination of a specific substance contained in a liquid component of a sample while avoiding breakage in a sensitive part or jamming of a portion of the sample in the case of puncturing the sample. [MEANS FOR SOLVING PROBLEMS] A biosensor provided with a needle-shape hollow container (12), a tubular holder (14) inserted into the hollow container (12), and an oxygen-sensitive optical fiber 18 the terminal (a sensing part (16)) of which is inserted into the tubular holder (14), wherein the hollow container (12) has one or more throughholes (20) in the side thereof, the tubular holder (14) comprises a tubular permeable membrane, a resin carrier applied to the inside of the permeable membrane and an oxidase immobilized within the carrier resin, and the oxygen-sensitive optical fiber (18) has the sensing part (16) at the terminal thereof. |
