Actigraphy methods and apparatuses

A technology for body movement and signal recording, used in the field of medical monitoring

Inactive Publication Date: 2017-08-18
KONINKLJIJKE PHILIPS NV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a situation may arise, for example, for monitoring systems that do not include onboard or easily incorporated actigraphy devices

Method used

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  • Actigraphy methods and apparatuses
  • Actigraphy methods and apparatuses
  • Actigraphy methods and apparatuses

Examples

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Embodiment Construction

[0024] refer to figure 1 , the mobile object monitoring system includes one or more physiological sensors 10, each of the one or more physiological sensors 10 senses a physiological parameter other than body movement (displacement, velocity, acceleration). For example, the one or more physiological sensors 10 may include one or more of the following sensors: ECG sensors; inductive plethysmographic sensors; optical plethysmographic sensors; ballistocardiographic sensors; . Each of the one or more physiological sensors 10 is configured to measure physiological processes other than body movement. For example, a physiological sensor may measure one or more of: cardiac activity; chest breathing effort; abdominal breathing effort; respiratory flow; In the illustrative embodiment, the one or more physiological sensors 10 include ECG sensors, respiration sensors, or both.

[0025] Continue to refer to figure 1 , the mobile object monitoring system also includes an electronic data ...

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Abstract

An actigraphy method includes receiving a physiological parameter signal as a function of time for a physiological parameter other than body motion (such as electrocardiography or a respiration monitor), computing a body motion artifact (BMA) signal as a function of time from the physiological parameter signal (for example, using a local signal power signal, a local variance signal, a short-time Fourier transform, or a wavelet transform over epochs of duration on order a few minutes or less), and computing an actigraphy signal as a function of time from the BMA signal, for example by applying a linear transform to the BMA signal and optionally applying filtering such as median removal and/or high-pass filtering.

Description

technical field [0001] The following generally relate to the fields of medical monitoring, activity recording, sleep assessment and related fields. Background technique [0002] Actimetry is a relatively unobtrusive method of monitoring human rest / activity / sleep cycles. The subject being monitored wears a small device that includes an accelerometer and is used to measure gross motor activity. Typically worn at the wrist location, actigraphy devices are primarily deployed in wristwatch-like form factors, which are familiar and relatively comfortable for the user. Actimetry is gaining acceptance in healthcare as well as in the consumer space due to mobility and home-based sleep assessment. Actimetry devices such as the Actiwatch product line (available from Royal Philips Ltd, Eindhoven, The Netherlands) are accepted for monitoring sleep / wake patterns and to help identify and monitor circadian rhythm sleep disorders, insomnia, shift work Clinical tools for work disorders and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61B5/0245A61B5/0402A61B5/08A61B5/11A61B5/113
CPCA61B5/0245A61B5/0809A61B5/0816A61B5/1118A61B5/1135A61B5/4806A61B5/4812A61B5/7203A61B5/7242A61B5/725A61B5/7257A61B5/726A61B5/7278A61B5/318
Inventor P·M·丰塞卡R·哈克玛R·M·阿尔特斯龙曦
Owner KONINKLJIJKE PHILIPS NV
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