Title:
MEDICAL DEVICE POSITION DETECTION SYSTEM, MEDICAL DEVICE GUIDING SYSTEM, AND MEDICAL DEVICE POSITION DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2007/064013
Kind Code:
A1
Abstract:
It is possible to detect a position of a medical device even if frequency characteristic
of a magnetic induction coil is fluctuated by the state of the external magnetic
field for guiding the medical device. A medical device position detection system
(50) is introduced into a body of an examinee and guided by an external magnetic
field. The medical device position detection system includes: a resonance circuit
(43) mounted on a medical device (20) and containing a magnetic induction coil
(42A) having a magnetic body inside for generating an alternating field; an alternating
magnetic field detection device (52) arranged outside the operation range of
the medical device (20) and detecting the alternating field generated by the
magnetic induction coil (42A); a position information calculation unit (50A)
for calculating position information on the medical device (20) according to
the alternating field detected by it; and a frequency setting unit (77) for setting
at least one of the frequency of the alternating field detected by the alternating
field detection device (52) and the frequency of the alternating field generated
by the magnetic induction coil (42A) according to at least one of the intensity
and the direction of the external magnetic field at the position of the magnetic
induction coil (42A).
Inventors:
UCHIYAMA AKIO (JP)
KIMURA ATSUSHI (JP)
SATO RYOJI (JP)
CHIBA ATSUSHI (JP)
KIMURA ATSUSHI (JP)
SATO RYOJI (JP)
CHIBA ATSUSHI (JP)
Application Number:
PCT/JP2006/324191
Publication Date:
June 07, 2007
Filing Date:
December 04, 2006
Export Citation:
Assignee:
OLYMPUS CORP (JP)
UCHIYAMA AKIO (JP)
KIMURA ATSUSHI (JP)
SATO RYOJI (JP)
CHIBA ATSUSHI (JP)
UCHIYAMA AKIO (JP)
KIMURA ATSUSHI (JP)
SATO RYOJI (JP)
CHIBA ATSUSHI (JP)
International Classes:
A61B1/00; A61B5/06; A61M25/00
Domestic Patent References:
| WO2004014225A2 | 2004-02-19 |
Foreign References:
| JP2005304638A | 2005-11-04 | |||
| JP2005121573A | 2005-05-12 | |||
| US20050216231A1 | 2005-09-29 |
Other References:
See also references of EP 1955644A4
Attorney, Agent or Firm:
UEDA, Kunio et al. (3-1 Minatomirai 3-chome, Nishi-k, Yokohama-shi Kanagawa 12, JP)
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