Patent ID: 9625420
Date: 2017-04-18
CPC Classifications: G01N

Claim:
1. A sensing sensor, comprising: a wiring board that includes a connecting terminal to be connected to a measuring apparatus for measuring an oscillation frequency, and a depressed portion is formed at one surface side of the wiring board; a piezoelectric resonator that includes a piezoelectric piece and an excitation electrode disposed at the piezoelectric piece, the piezoelectric resonator covering the depressed portion, the piezoelectric resonator being secured to the wiring board such that a vibrating region is opposed to the depressed portion, the excitation electrode being electrically connected to the connecting terminal, the piezoelectric resonator including an adsorbing film configured to adsorb a sensing object in a sample solution at one surface side of the piezoelectric piece; a channel forming member disposed so as to cover a region at one surface side of the wiring board including the piezoelectric resonator, the channel forming member including an injection port for a sample solution; a channel formed between the wiring board and the channel forming member, the channel being configured to cause the sample solution supplied to the injection port to flow through from a one end side to another end side at the one surface side of the piezoelectric resonator; an effluent channel disposed at a downstream side of the channel, the effluent channel being configured to discharge the sample solution inside of the channel by capillarity; a capillary member having a flat surface parallel to the effluent channel and disposed at a downstream side of the effluent channel in contact with the sample solution flowing through an inside of the effluent channel, where one end side of the capillary member projecting from a downstream end of the effluent channel into a portion of an opening of the effluent channel, the capillary member being configured to cause the sample solution to flow through by the capillarity; and an absorbing member disposed at a downstream side of the capillary member, the absorbing member being configured to absorb the sample solution flowing through the capillary member.