Device, system, and method for patient activity monitoring

• US 9,591,997 B2
• Filed: 08/22/2014
• Issued: 03/14/2017
• Est. Priority Date: 08/22/2014
• Status: Active Grant

• Current Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd. (Excelsior Union Ltd.)
• Original Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd. (Excelsior Union Ltd.)
• Inventors: Menzel, Frank
• Primary Examiner(s): Thomson, William
• Assistant Examiner(s): SANDS, DAVIN K
• Application Number:
  US14/466,704
• Publication Number:
  US 20160051166A1
• Time in Patent Office: 935 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61B 5/002 Monitoring the patient using a local or closed circuit, e.g. in a room or building A61B5/0017 takes precedence
• CPC Class Codes: A61B 5/1116 Determining posture transitions
• CPC Class Codes: A61B 5/1118 Determining activity level
• CPC Class Codes: A61B 5/1123 Discriminating type of movement, e.g. walking or running A61B5/1116, A61B5/112 take precedence
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/7246 using correlation, e.g. template matching or determination of similarity
• CPC Class Codes: A61B 5/7264 Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems neural networks per se G06N3/00; expert systems per se G06N5/00
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence
• CPC Class Codes: A61B 5/746 Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms alarms per se G08B
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems
• CPC Class Codes: G16H 50/30 for calculating health indices; for individual health risk assessment
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

A portable telemetry device includes a physiological component, a movement component, a wireless radio, and a communication component. The physiological component is configured to receive, from at least one sensor, physiological data representative of a physiological condition of a patient. The movement component is configured to detect movement of the portable telemetry device and generate movement data. The portable telemetry device is configured to attach to the patient. The wireless radio is configured to wirelessly send radio signals. The communication component is configured to transmit the physiological data and the movement data to a monitoring system using the wireless radio.

Claims

1. A portable telemetry device comprising:

a physiological component configured to receive, from at least one sensor, physiological data representative of a physiological condition of a patient;

a movement component configured to detect multi-axis accelerations of the portable telemetry device and generate movement data, including multi-axis acceleration data, wherein the portable telemetry device is configured to attach to the patient;

an activity component configured to distinguish between and identify each of a plurality of patient movement activities by;

comparing a time-varying acceleration waveform pattern of the multi-axis acceleration data for a first time period with predetermined acceleration patterns to identify a first activity of the patient,

identifying a transition movement by the patient from the first activity to a second activity based on a comparison of the time-varying acceleration waveform pattern with the predetermined acceleration patterns during a second time period,

comparing a time-varying acceleration waveform pattern of the multi-axis acceleration data for a third time period with the predetermined acceleration patterns to identify the second activity of the patient;

a wireless radio configured to wirelessly send radio signals; and

a communication component configured to transmit a patient alert to a third party monitoring system with the physiological data and the movement data using the wireless radio, the patient alert including;

an identification and duration of the first activity of the patient,

identification of the transition movement to the second activity, and

identification of the second activity of the patient.

2. The portable telemetry device of claim 1, further comprising an activity component configured to identify at least one of the movement activities corresponding to at least a portion of the multi-axis acceleration data.

3. The portable telemetry device of claim 2, wherein the activity component is configured to identify the multi-axis acceleration activity as one of the patient moving and the patient resting.

4. The portable telemetry device of claim 3, wherein the activity component is configured to identify the movement activity as the patient rolling over.

5. The portable telemetry device of claim 3, further comprising an alarm component configured to provide an alarm in response to detecting an occurrence of a specific movement activity.

6. The portable telemetry device of claim 3, wherein the activity component identifies the movement activity based on a signature in a waveform generated by an accelerometer.

7. A system comprising:

a monitoring component configured to receive physiological data representative of a physiological condition of a patient and multi-axis acceleration data corresponding to movements of the patient;

an activity component configured to distinguish between and identify each of a plurality of patient movement activities by;

comparing a time-varying acceleration waveform pattern of the multi-axis acceleration data for a first time period with predetermined acceleration patterns to identify a first activity of the patient,

identifying a transition movement by the patient from the first activity to a second activity based on a comparison of the time-varying acceleration waveform pattern with the predetermined acceleration patterns during a second time period,

comparing a time-varying acceleration waveform pattern of the multi-axis acceleration data for a third time period with the predetermined acceleration patterns to identify the second activity of the patient;

a movement tracking component configured to track the patient movement activities over time; and

a third party alert system to notify a third party of;

an identification and duration of the first activity of the patient,

identification of the transition movement to the second activity, and

identification of the second activity of the patient.

8. The system of claim 7, wherein the movement tracking component tracks a number of occurrences of the movement activity over a specific time period.

9. The system of claim 7, wherein the activity component is configured to identify the movement activity as one or more of the patient standing up and the patient sitting down.

10. The system of claim 7, wherein the activity component is configured to identify the movement activity as one or more of the patient walking and the patient rolling over.

11. The system of claim 7, wherein the movement tracking component tracks a percentage of the time during which a patient is one or more of moving and walking.

12. The system of claim 7, wherein the movement tracking component tracks a percentage of the time during which a patient is one or more of resting and lying down.

13. The system of claim 7, further comprising an alarm component configured to notify a medical worker in response to detecting a movement activity.

14. The system of claim 13, where the movement activity comprises standing up and wherein the alarm component is configured to notify the medical worker in response to the patient standing up.

15. The system of claim 7, wherein the activity component is configured to compare the movement data to patient data to determine the movement activity.