Title:
ATRIAL FIBRILLATION DETECTION SYSTEM
Document Type and Number:
Japanese Patent JP2021094138
Kind Code:
A
Abstract:
To provide an atrial fibrillation detection system that calculates an extent of irregularity of a measured pulsation interval itself and reduces detection of a false positive without excluding extrasystole even when there occurs extrasystole, thereby providing a reliable determination result.SOLUTION: An atrial fibrillation detection system includes: pulsation interval measurement means 4 for measuring a pulsation interval of a heart; pulsation interval conversion means 8 for converting an extent of a change in the pulsation interval R obtained by the pulsation interval measurement means 4 to an almost constant level by a predetermined function; entropy calculation means 9 for calculating an entropy S from a pulsation interval image r converted by the pulsation interval conversion means 8; and comparison and determination means 10 for comparing the entropy S calculated by the entropy calculation means 9 to a predetermined threshold, and if the entropy S is larger than the threshold, determining that atrial fibrillation is occurring.SELECTED DRAWING: Figure 1
Inventors:
SHINOZAKI AKIRA
MATSUI TAISHI
NAKADA AKIO
MATSUI TAISHI
NAKADA AKIO
Application Number:
JP2019226464A
Publication Date:
June 24, 2021
Filing Date:
December 16, 2019
Export Citation:
Assignee:
UNION TOOL KK
International Classes:
A61B5/352; A61B5/02; A61B5/0245
Domestic Patent References:
| JP2017504414A | 2017-02-09 | |||
| JP2018525188A | 2018-09-06 | |||
| JP2016140689A | 2016-08-08 |
Foreign References:
| US20140330134A1 | 2014-11-06 |
Attorney, Agent or Firm:
Tsuyoshi Yoshii
Masae Yoshii
Masae Yoshii