System and method to detect significant arrhythmic events through photoplethysmogram (PPG) and accelerometer

An accelerometer and arrhythmia technology, which is applied in the measurement of pulse rate/heart rate, electrotherapy, blood vessel evaluation, etc., can solve the problems of expensive, laborious, cumbersome ECG technology and maintain signal acquisition, and achieve reliable detection results

Active Publication Date: 2015-08-12
KONINKLJIJKE PHILIPS NV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ECG monitoring poses many challenges
[0003] Conventional ECG techniques are cumbersome (laborious in maintaining signal acquisition) and expensive

Method used

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  • System and method to detect significant arrhythmic events through photoplethysmogram (PPG) and accelerometer
  • System and method to detect significant arrhythmic events through photoplethysmogram (PPG) and accelerometer
  • System and method to detect significant arrhythmic events through photoplethysmogram (PPG) and accelerometer

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Embodiment Construction

[0016] The present invention proposes to detect arrhythmic events through the use of photoplethysmography (PPG) signals together with respiratory and pulse signals, which are determined from accelerometers. These events can be detected with high confidence by accelerometer-based cross-correlation of the respiration and pulse signals with the PPG signal. Additionally, detected events can be used to generate alerts to clinicians with a high degree of confidence.

[0017] refer to figure 1 with figure 2 , the medical system 10 includes a PPG probe 12 that facilitates the generation of PPG signals and / or other signals. Typically, the PPG signal is generated using a pulse oximeter, but other ways of generating the PPG signal are contemplated. The PPG probe 12 is placed on or within the associated patient 14 .

[0018] When a pulse oximeter is used to generate a PPG signal, the PPG probe 12 is placed on or near a thin portion of the patient 14 . In the case of infants, the PPG...

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Abstract

A medical system (10) and method detect arrhythmi cevents. The medical system (10)includes at least one processor (28, 34, 50) programmed to perform the method. A photoplethysmogram (PPG) signal generated using a PPG probe (12)positioned on or within a patient (14) anda pulse signal generated using an accelerometer (38)positioned on or within the patient (14) received. Features from the PPG signal are extracted to PPG feature vectors, and features are extracted from the pulse signal to pulse feature vectors. The PPG feature vectors are correlated with the pulse feature vectors, and correlated PPG feature vectors and correlated pulse feature vectors are evaluated to detect arrhythmic events.

Description

technical field [0001] This application relates generally to patient monitoring. This application finds particular application in connection with reducing false alarms and will be described with particular reference to that application. However, it should be understood that the present application also applies to other usage scenarios and is not necessarily limited to the aforementioned applications. Background technique [0002] Electrocardiogram (ECG) monitoring of cardiac events such as ischemic and arrhythmic events is important for detecting patient deterioration. Arrhythmic events of interest include, for example, onset and termination of atrial fibrillation or fibrillation (AF), ventricular tachycardia (ventricular tachycardia), ventricular fibrillation (VF), and cardiac arrest. However, ECG monitoring poses many challenges. [0003] Conventional ECG techniques are cumbersome (laborious in maintaining signal acquisition) and expensive. In many cases, continuous EC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/024A61B5/0205A61B5/11A61B5/021A61N1/05A61N1/365A61B5/00
CPCA61B5/7221A61N1/05A61B5/1102A61B5/113A61N1/36578A61B5/02416A61B5/721A61N1/36542A61B5/0205A61B5/1118A61B5/02427A61B5/08A61B5/7246A61B5/7278A61B5/7282A61B2562/0219
Inventor B·D·格罗斯
Owner KONINKLJIJKE PHILIPS NV
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