Patent ID: 8007645
Filing Date: 2011-08-30
Classification: G01N

Abstract:
1. A biosensor comprising: a first insulating substrate and a second insulating substrate bonded together; a sample supply port which opens at one end of the bonded insulating substrates, and to which a sample solution is applied; a capillary communicated with the sample supply port, and into which the applied sample solution is introduced; and an air hole which is positioned at an end of the capillary opposite the sample supply port and communicated with air inside the capillary, wherein said sample supply port and said capillary are formed by bonding the insulating substrates together, wherein an auxiliary sample supply port communicated with said capillary, through which the applied sample solution is introduced into the capillary, is formed in one of the first insulating substrate and the second insulating substrate and provided in the vicinity of said sample supply port, wherein said auxiliary sample supply port is a through-hole penetrating said one of the insulating substrates and is in fluid communication with outer air between the auxiliary sample supply port and the sample supply port, and wherein an entirety of the capillary between the auxiliary sample supply port and the air hole is covered by said one of the first insulating substrate and the second insulating substrate.