公开(公告)号：US09833162B2

公开(公告)日：2017-12-05

申请号：US14996294

申请日：2016-01-15

申请人： UNION TOOL CO.

发明人： Taishi Matsui ,  Ryo Shinozaki

IPC分类号： A61B5/046 ,  A61B5/024 ,  A61B5/00 ,  A61B5/04 ,  A61N1/39

CPC分类号： A61B5/046 ,  A61B5/0006 ,  A61B5/02405 ,  A61B5/04012 ,  A61B5/04014 ,  A61N1/395

摘要： Provided is an atrial fibrillation detection system which can reduce the burden on a test subject, with which it is possible to detect even paroxysmal atrial fibrillation, and which can be used in the home, contributing to early detection of atrial fibrillation. This atrial fibrillation detection system detects the presence of atrial fibrillation in a subject, and is provided with a heartbeat period measurement means that measures heartbeat periods of the heart; a normalized heartbeat period computation means that computes normalized heartbeat periods DR(N) from heartbeat periods of the heart measured by the heartbeat period measurement means; an abnormal normalized heartbeat period cumulation means that, from among a prescribed number of successive normalized heartbeat periods DR(N), adds up the count of abnormal normalized heartbeat periods that have an absolute value exceeding a normal heartbeat period value; and a comparison/determination means that compares the cumulative count of the abnormal normalized heartbeat periods and a normal cumulative count threshold value, and in the event that the cumulative count of the abnormal normalized heartbeat periods exceeds the normal cumulative count threshold value, determines that atrial fibrillation has occurred.

公开(公告)号：US09545205B2

公开(公告)日：2017-01-17

申请号：US14771032

申请日：2014-02-28

申请人： UNION TOOL CO.

发明人： Mariko Matsui ,  Sonoko Ishimaru ,  Ryo Shinozaki ,  Naoki Jinbo

IPC分类号： G08B23/00 ,  A61B5/0245 ,  G08B21/06 ,  A61B5/16 ,  A61B5/00 ,  B60K28/04 ,  A61B5/18 ,  B60W40/08

CPC分类号： A61B5/02455 ,  A61B5/0245 ,  A61B5/16 ,  A61B5/18 ,  A61B5/4812 ,  A61B2503/22 ,  B60K28/04 ,  B60W40/08 ,  B60W2040/0827 ,  G08B21/06

摘要： A method for preventing dozing off, comprising the steps of: a measurement step measuring human heartbeats; a decision step (S4 to S8) generating a trigger, hereinafter referred to as a “drowsiness trigger”, for indicating occurrence of drowsiness when a state in which a time interval between adjacent heartbeats, hereinafter referred to as a “heartbeat interval”, is longer than the previous heartbeat interval consecutively occurs; and a warning step (S9) giving a warning to prevent dozing off when the drowsiness trigger is generated.

摘要翻译： 一种防止打瞌睡的方法，包括以下步骤：测量人心跳的测量步骤; 当在相邻心跳之间的时间间隔（以下称为“心跳间隔”）的状态为“心跳间隔”的状态时，产生用于指示出现嗜睡的触发的判定步骤（S4至S8），以下称为“嗜睡触发” 长于以前的心跳间隔连续发生; 以及当产生嗜睡触发时发出警告以防止打瞌睡的警告步骤（S9）。

公开(公告)号：US20210177288A1

公开(公告)日：2021-06-17

申请号：US17113670

申请日：2020-12-07

申请人： UNION TOOL CO.

发明人： Ryo Shinozaki ,  Taishi Matsui ,  Akio Nakata

IPC分类号： A61B5/024 ,  A61B5/00 ,  G16H50/30

摘要： An object of the present invention is to provide an atrial fibrillation detection system in which: the extent of irregularity in measured pulse intervals is calculated; even in cases where an extrasystole has occurred, detection of a false positive is reduced even when the extrasystole is not excluded; and highly reliable assessment results are obtained. An atrial fibrillation detection system comprising: pulse interval measurement means 4 that measures the pulse intervals of a heart; pulse interval conversion means 8 that performs conversion, using a prescribed function, so that the extent of variation in the pulse intervals R obtained by the pulse interval measurement means 4 is substantially fixed; entropy computation means 9 that calculates entropy S from pulse interval images r obtained through conversion by the pulse interval conversion means 8; and comparative assessment means 10 that compares the entropy S calculated by the entropy computation means 9 and a threshold value, and that, in cases where the entropy S is greater than the threshold value, assesses that atrial fibrillation is occurring.