Title:
SYSTEM FOR SENSING POSITION IN SUBJECT
Document Type and Number:
WIPO Patent Application WO/2005/063122
Kind Code:
A1
Abstract:
Disclosed is a system for sensing a position in a subject which comprises a test capsule (2) in which a permanent magnet is contained and a position sensor (3) for sensing the position of the test capsule (2) according to the intensity of a fixed magnetic field generated by the permanent magnet contained in the test capsule (2). The position sensor (3) comprises field intensity sensing units (6a-6h), fixing members (7a, 7b) for fixing the field intensity sensing units (6a-6h) to a subject (1), and a positional information calculating unit (8) for determining the position of the test capsule (2) according to respective distances between the test capsule (2) and the field intensity sensing units (6a-6h) which are calculated based on the field intensities sensed by the field intensity sensing units (6a-6h).
Inventors:
MINAI TETSUO
SHIMIZU HATSUO
SHIMIZU HATSUO
Application Number:
PCT/JP2004/014399
Publication Date:
July 14, 2005
Filing Date:
September 30, 2004
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
A61B5/07; A61B1/00; A61B1/05; A61B5/00; A61B5/05; A61B5/06; A61B8/12; A61B19/00; (IPC1-7): A61B5/07; A61B1/00
Foreign References:
| JPH09503054A | 1997-03-25 | |||
| JP2001179700A | 2001-07-03 | |||
| JP2003117004A | 2003-04-22 | |||
| JP2959723B2 | 1999-10-06 |
Attorney, Agent or Firm:
Sakai, Hiroaki (Kasumigaseki Building 2-5, Kasumigaseki 3-chom, Chiyoda-ku Tokyo, JP)
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