公开(公告)号：US20230172548A1

公开(公告)日：2023-06-08

申请号：US18073173

申请日：2022-12-01

申请人： Draeger Medical Systems, Inc.

发明人： Derek Y. Qin

IPC分类号： A61B5/00 ,  A61B5/28 ,  A61B5/339 ,  A61B5/0531

CPC分类号： A61B5/6843 ,  A61B5/28 ,  A61B5/339 ,  A61B5/0531 ,  A61B2562/04 ,  A61B2562/222

摘要： An ECG monitoring method and apparatus are presented in which contact impedances including capacitive components are utilized to, for example, reduce false alarms for lead-off conditions. In one aspect of the disclosure a method includes monitoring a plurality of Electrocardiogram (“ECG”) electrodes ostensibly electrically connected to a human body; determining the respective contact impedance for each of the ECG electrodes as a plurality of electrical currents is driven through the ECG electrodes in a predetermined pattern, each respective contact impedance including a resistive component and a capacitive component; ascertaining whether any of the determined respective contact impedances exceeds a predetermined threshold; if any of the determined respective contact impedances exceeds the predetermined threshold, issuing an alarm.

公开(公告)号：US10368805B2

公开(公告)日：2019-08-06

申请号：US15394349

申请日：2016-12-29

申请人： Draeger Medical Systems, Inc.

发明人： Derek Y. Qin

IPC分类号： A61B5/00 ,  A61B5/04 ,  A61B5/0428 ,  A61B5/0408 ,  A61B5/0205 ,  A61B5/053

摘要： Systems and methods are provided herein for monitoring electrocardiogram (ECG) electrodes. Each ECG electrode is electrically connected to a patient body and a corresponding current source. A reference ECG electrode of the monitored ECG electrodes is selected. Current is injected into each electrode. Each current has a respective predetermined level. Based on the injected currents, ECG electrode voltages are generated. The injected currents are adjusted after measuring the ECG electrode voltages while the predetermined level through the reference ECG electrode is maintained. An impedance associated with each non-reference ECG electrode is determined based on the ECG electrode voltage and the injected current.

公开(公告)号：US20180184980A1

公开(公告)日：2018-07-05

申请号：US15394349

申请日：2016-12-29

申请人： Draeger Medical Systems, Inc.

发明人： Derek Y. Qin

IPC分类号： A61B5/00 ,  A61B5/04 ,  A61B5/0428 ,  A61B5/0408 ,  A61B5/0205

CPC分类号： A61B5/6843 ,  A61B5/0205 ,  A61B5/04002 ,  A61B5/04087 ,  A61B5/04286 ,  A61B5/053 ,  A61B2562/0214

摘要： Systems and methods are provided herein for monitoring electrocardiogram (ECG) electrodes. Each ECG electrode is electrically connected to a patient body and a corresponding current source. A reference ECG electrode of the monitored ECG electrodes is selected. Current is injected into each electrode. Each current has a respective predetermined level. Based on the injected currents, ECG electrode voltages are generated. The injected currents are adjusted after measuring the ECG electrode voltages while the predetermined level through the reference ECG electrode is maintained. An impedance associated with each non-reference ECG electrode is determined based on the ECG electrode voltage and the injected current.