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Patent Searching and Data


Title:
ESTIMATION DEVICE AND ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/066028
Kind Code:
A1
Abstract:
This estimation device (100) estimates the variation ΔVblood in blood volume between an expansion state in which the blood volume contained in the heart H1 in the chest H is the maximum and a contraction state in which the blood volume is the minimum. The estimation device (100) includes a transmission antenna (111), a reception antenna (112), and an estimation unit (126). The transmission antenna (111) transmits a microwave towards the heart H1 in the expansion state and the contraction state. The reception antenna (112) receives the microwaves passing through the heart H1. The estimation unit (126) estimates the variation ΔVblood. The estimation unit (126) estimates the variation ΔVblood from the received microwaves in the expansion state and the contraction state on the basis of the relationship that an energy absorption amount Pblood absorbed by the blood of the amount of variation ΔVblood is equal to the difference ΔP in energy absorption amount between the energy absorption amount Pdchest absorbed by the chest H from the microwave in the expansion state and the energy absorption amount Pschest absorbed by the chest H from the microwave in the contraction state.

Inventors:
LU XIAOWEI (JP)
SUDA SHINICHIRO (JP)
HONDA KEI (JP)
SUZUKI SATOSHI (JP)
Application Number:
PCT/JP2020/037204
Publication Date:
April 08, 2021
Filing Date:
September 30, 2020
Export Citation:
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Assignee:
TERUMO CORP (JP)
THE SCHOOL CORPORATION KANSAI UNIV (JP)
International Classes:
A61B5/0295; A61B5/053
Domestic Patent References:
WO2018194093A12018-10-25
Foreign References:
JP2016202516A2016-12-08
US20170119261A12017-05-04
Attorney, Agent or Firm:
HATTA & ASSOCIATES (JP)
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