Patent Number: 6,966,977

Title: Biosensor

Abstract: A sensor including an insulating base plate; an electrode system, provided on the base plate, having a measuring electrode and a counter electrode; a reaction layer including at least an oxidoreductase and an electron mediator; a sample solution supply pathway including the electrode system and the reaction layer; and a sample supply unit, wherein the sensor is so structured that, between the sample supply unit and the sample solution supply pathway, there is provided a filter having a function to filter out hemocytes and having a cross-sectional area larger than an opening of the sample solution supply pathway, and that plasma of a blood with hemocytes thereof having been filtered out is sucked into the inside of the sample solution supply pathway owing to capillary phenomena.

Inventors: Hasegawa; Miwa (Hyogo, JP), Yamamoto; Tomohiro (Hirakata, JP), Watanabe; Motokazu (Toyonaka, JP), Ikeda; Shin (Katano, JP), Nankai; Shiro (Hirakata, JP)

Assignee: Matsushita Electric Industrial Co., Ltd.

International Classification: C12Q 1/00 (20060101); G01N 33/49 (20060101); G01N 33/543 (20060101); G01N 33/487 (20060101); G01N 027/327 ()

Expiration Date: 1/22/02018