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Title:
VITAL SIGN DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/044318
Kind Code:
A1
Abstract:
Provided is a vital sign detection device (1) comprising a piezoelectric sensor (10) positioned on bedding (40), said piezoelectric sensor (10) comprising: a piezoelectric layer (11) including an elastomer and piezoelectric particles; electrode layers (12a, 12b); and protective layers (13a, 13b) including elastomers. The piezoelectric sensor (10) is flexible, expandable, and contractible and is formed into a rectangular thin plate, the width thereof being between 5-100mm inclusive, the length thereof being 100-1000mm inclusive, the ratio of length to width (length/width) thereof being 2-200 inclusive, and the thickness thereof being 0.05-5mm inclusive. In the piezoelectric sensor (10), the area of a pressure-sensitive part (S) wherein the electrode layers (12a, 12b) overlap in the thickness direction via the piezoelectric layer (11) is 20% or more of the area of the piezoelectric sensor (10). On the basis of an output signal from the piezoelectric sensor (10), the vital sign detection device (1) detects the respiration and/or the heartbeat of a subject (P).

Inventors:
TAKAHASHI WATARU (JP)
SHIMIZU ATSUKI (JP)
KONDO TADAMASA (JP)
KATO YO (JP)
Application Number:
PCT/JP2018/028419
Publication Date:
March 07, 2019
Filing Date:
July 30, 2018
Export Citation:
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Assignee:
SUMITOMO RIKO CO LTD (JP)
International Classes:
A61B5/11; A61B5/0245; A61B5/113
Domestic Patent References:
WO2017010135A12017-01-19
Foreign References:
JPH10295695A1998-11-10
JP2006043445A2006-02-16
JP2014124310A2014-07-07
JP2001525706A2001-12-11
JP2012205803A2012-10-25
JP2018056287A2018-04-05
Attorney, Agent or Firm:
HIGASHIGUCHI Michiaki et al. (JP)
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