Patent ID: 8303800
Filing Date: 2012-11-06
Classification: B01L,B33Y,G01N

Abstract:
1. An electrochemical sensor device, comprising: a channel portion formed in a substrate; and working electrodes for subjecting an analyte in a solution flowing in the channel portion to electrochemical measurement, wherein: the channel portion includes a first stem portion through which a first solution flows and a second stem portion through which a second solution flows, and a plurality of measuring portions extending toward downstream sides of the first stem portion and the second stem portion and individually provided with the working electrodes; the plurality of measuring portions include a confluent portion through which a mixed solution of the first solution and the second solution flows, the confluent portion extending from a portion where a branch portion branching from the first stem portion and a branch portion branching from the second stem portion merge with each other toward a downstream side, a first independent portion through which the first solution flows, the first independent portion extending toward the downstream side of the first stem portion without merging with any other channel, and a second independent portion through which the second solution flows, the second independent portion extending toward the downstream side of the second stem portion without merging with any other channel; and the working electrodes each have a plurality of conductive protrusion portions formed to protrude from a bottom surface of the measuring portion and disturbing the flows of the solutions flowing above the working electrodes, wherein: the plurality of protrusion portions include the plurality of plate-like protrusion portions include