Title:
血液中水分量検出装置及び血液透析時期判定装置
Document Type and Number:
Japanese Patent JP4123230
Kind Code:
B2
Abstract:
A blood water content detection device includes a pulse wave detection section which noninvasively detects a peripheral pulse wave, and an index extraction section which extracts an index which changes depending on a blood water content from the detected pulse wave. The blood water content detection device may include a low-cut section which removes a low frequency component which becomes noise from the pulse wave detected by the pulse wave detection section. The blood water content detection device may further include first and second differentiation sections. The index extraction section extracts a pulse height ratio (b/a) or (d/a) of a second differential waveform as the index, for example.
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Inventors:
Kazuhiko Amano
Hiroaki Tanaka
Hiroaki Tanaka
Application Number:
JP2004521189A
Publication Date:
July 23, 2008
Filing Date:
July 11, 2003
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
A61B5/022; A61B5/0205; A61B5/0245; A61B5/053; A61B5/145; A61M1/14
Domestic Patent References:
| JP2002052011A | ||||
| JP2002034946A | ||||
| JP2001000540A | ||||
| JP2002119488A | ||||
| JP2000083914A | ||||
| JP2004041482A |
Other References:
天野 和彦,ウェアラブル脈波モニタによる血液透析中の循環動態測定の試み,マイクロメカトロニクス,日本,社団法人 日本時計学会,2003年 3月10日,Vol.47,No.1,P.72-79
Attorney, Agent or Firm:
Inoue Ichi
Takekoshi Noboru
Yasushi Kuroda
Yukio Fuse
Mitsue Obuchi
Takekoshi Noboru
Yasushi Kuroda
Yukio Fuse
Mitsue Obuchi