The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2009
Filed:
Dec. 20, 2004
Tetsuo Minai, Tokyo, JP;
Hatsuo Shimizu, Tokyo, JP;
Tetsuo Minai, Tokyo, JP;
Hatsuo Shimizu, Tokyo, JP;
Olympus Corporation, Tokyo, JP;
Abstract
A system includes a device swallowed, passing through a subject, and including a constant magnetic field generator generating a constant magnetic field; and a position transducer. The position transducer includes a magnetic detector, a calibration magnetic field generator, a magnetic detector detecting an intensity of a magnetic field, a coordinate calibrating unit, and a position processor. The calibration magnetic field generator is disposed at a fixed relative position to the subject, and generates a calibration magnetic field for position calibration of the magnetic detector. The coordinate calibrating unit calibrates a position coordinate of the magnetic detector using an intensity of the calibration magnetic field. The position processor calculates a position of the device in the subject based on the intensity of the constant magnetic field and the position coordinate of the magnetic detector calibrated.