Title:
METHOD OF MEASURING BLOOD IN PULP CAVITY, APPRATUS THEREFOR AND ADAPTOR FOR MEASURING BLOOD IN PULP CAVITY
Document Type and Number:
WIPO Patent Application WO/2007/072592
Kind Code:
A1
Abstract:
A tooth (10) is irradiated with isobestic lights of multiple wavelengths which
are not affected by the degree of oxygen saturation of hemoglobin. Then, a light
transmitted through the tooth (10) is received and the blood concentration and
the blood flow amount in the pulp cavity are determined while eliminating the
effects of light scattering and absorption caused by the tooth substances (the
enamel (12) and the dentin (14)). Further, the degree of oxygen saturation of
the blood in the pulp cavity is determined with the use of the attenuation in the
transmitted light observed by irradiating the tooth with the isobestic lights
not affected by the degree of oxygen saturation of hemoglobin and with non-isobestic
lights affected by the degree of oxygen saturation of hemoglobin and the total
hemoglobin level in the pulp cavity having been determined by the method as described
above. Thus, the blood concentration (hemoglobin concentration), blood flow
amount and degree of oxygen saturation of the blood in the pulp cavity can be noninvasively,
objectively and quantitatively measured even in bright light without paining
a patient.
Inventors:
MIWA ZENZO (JP)
KAKINO SATOKO (JP)
IKAWA MOTOHIDE (JP)
TAKATANI SETSUO (JP)
OHUCHI KATSUHIRO (JP)
HOSHI HIDEO (JP)
TAKAGI YUZO (JP)
KIRIMOTO AKIKO (JP)
KAKINO SATOKO (JP)
IKAWA MOTOHIDE (JP)
TAKATANI SETSUO (JP)
OHUCHI KATSUHIRO (JP)
HOSHI HIDEO (JP)
TAKAGI YUZO (JP)
KIRIMOTO AKIKO (JP)
Application Number:
PCT/JP2006/312423
Publication Date:
June 28, 2007
Filing Date:
June 21, 2006
Export Citation:
Assignee:
NAT UNIV CORP TOKYO MED & DENT (JP)
MIWA ZENZO (JP)
KAKINO SATOKO (JP)
IKAWA MOTOHIDE (JP)
TAKATANI SETSUO (JP)
OHUCHI KATSUHIRO (JP)
HOSHI HIDEO (JP)
TAKAGI YUZO (JP)
KIRIMOTO AKIKO (JP)
MIWA ZENZO (JP)
KAKINO SATOKO (JP)
IKAWA MOTOHIDE (JP)
TAKATANI SETSUO (JP)
OHUCHI KATSUHIRO (JP)
HOSHI HIDEO (JP)
TAKAGI YUZO (JP)
KIRIMOTO AKIKO (JP)
International Classes:
A61B5/1455; A61B5/026; A61C19/04
Foreign References:
| JP2003070752A | 2003-03-11 | |||
| US4836206A | 1989-06-06 | |||
| JPH07246191A | 1995-09-26 |
Attorney, Agent or Firm:
TAKAYA, Satoshi et al. (10-12 Yoyogi 2-chome, Shibuya-k, Tokyo 53, JP)
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