Title:
LIVING ORGANISM STATE QUANTITY MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/008178
Kind Code:
A1
Abstract:
In order to always obtain an accurate measured value regardless of changes over time in the characteristic value of a circuit element, provided is a living organism state quantity measuring device (1) provided with: a detection unit (2, 3) which detects information indicating the state of a living organism from a living organism or a living organism sample (A) taken from the living organism and outputs the detected information as a current; a current/voltage conversion circuit (4) which converts the current outputted from the detection unit (2, 3) into voltage; a double integration A/D conversion circuit (5) which comprises an integration capacitor (53) that is discharged after being charged on the basis of the voltage (Vsig) outputted from the current/voltage conversion circuit (4), and a counter (55) that measures the charge time and discharge time of the integration capacitor (53), converts the charge time and discharge time measured by the counter (55) into a digital quantity, and outputs the digital quantity; and an information processing unit (55) which calculates the state quantity of the living organism on the basis of the digital quantity outputted from the A/D conversion circuit (5).
Inventors:
SUGIMOTO, Naoya (43-2 Hatagaya 2-chome, Shibuya-k, Tokyo 72, 〒1510072, JP)
Application Number:
JP2011/055793
Publication Date:
January 19, 2012
Filing Date:
March 11, 2011
Export Citation:
Assignee:
OLYMPUS CORPORATION (43-2, Hatagaya 2-chome Shibuya-k, Tokyo 72, 〒1510072, JP)
オリンパス株式会社 (〒72 東京都渋谷区幡ヶ谷２丁目４３番２号 Tokyo, 〒1510072, JP)
オリンパス株式会社 (〒72 東京都渋谷区幡ヶ谷２丁目４３番２号 Tokyo, 〒1510072, JP)
International Classes:
A61B5/1459; A61B5/1455; G01N21/17; G01N21/64
Attorney, Agent or Firm:
UEDA, Kunio et al. (37F The Landmark Tower Yokohama, 2-2-1 Minatomirai, Nishi-ku, Yokohama-sh, Kanagawa 37, 〒2208137, JP)
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Claims: