Adherent device for respiratory monitoring

• US 8,591,430 B2
• Filed: 09/12/2008
• Issued: 11/26/2013
• Est. Priority Date: 09/14/2007
• Status: Active Grant

• Current Assignee: Medtronic Monitoring, Inc. (Medtronic Plc)
• Original Assignee: Corventis
• Inventors: Amurthur, Badri, Bly, Mark J., Libbus, Imad, Manicka, Yatheendhar D.
• Primary Examiner(s): Yang, N
• Application Number:
  US12/209,268
• Publication Number:
  US 20090076405A1
• Time in Patent Office: 1,901 Days
• Field of Search: None
• US Class Current: 600/529
• CPC Class Codes: A61B 2560/0412 Low-profile patch shaped housings
• CPC Class Codes: A61B 2562/164 the sensor is mounted in or on a conformable substrate or carrier
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/02055 Simultaneously evaluating both cardiovascular condition and temperature
• CPC Class Codes: A61B 5/0809 by impedance pneumography
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/282 Holders for multiple electrodes for introduction into the body A61B5/287
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• CPC Class Codes: A61B 5/6833 Adhesive patches
• 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: G16H 40/63 for local operation
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

A respiratory monitoring system is provided. A measuring system is provided that includes, (i) an adherent device configured to be coupled to a patient, the adherent device including a plurality of sensors that monitor respiratory status, at least one of the sensors configured to monitor the patient'"'"'s respiration, and (ii) a wireless communication device coupled to the plurality of sensors and configured to transfer patient data directly or indirectly from the plurality of sensors to a remote monitoring system. A remote monitoring system is coupled to the wireless communication device.

Claims

1. A respiratory monitoring system for monitoring a patient, comprising:

a patient detecting system comprising,

an adherent device configured to couple to a patient, the adherent device comprising a plurality of sensors configured to monitor physiological parameters of the patient to determine respiratory status, at least one of the plurality of sensors configured to monitor the patient'"'"'s respiration, electronic circuitry coupled to the plurality of sensors, the electronic circuitry comprising a wireless communication device, and a flexible, breathable cover disposed over the electronic circuitry; and

a remote monitoring system coupled to the wireless communication device, the wireless communication device configured to transfer patient data from the plurality of sensors to the remote monitoring system.

2. The system of claim 1, wherein the plurality of sensors are configured to monitor respiration of the patient with a bioimpedance sensor.

3. The system of claim 1, wherein the plurality of sensors comprises a combination of sensors and the combination of sensors comprises as least one of a bioimpedance sensor, a heart rate sensor or a pulse oximeter sensor.

4. The system of claim 1, wherein the wireless communication device is configured to receive instructional data from the remote monitoring system.

5. The system of claim 1, further comprising:

a processor coupled to the plurality of sensors and to the wireless communication device, the processor configured to receive data from the plurality of sensors and process the patient data to generate processed patient data.

6. The system of claim 5, wherein the processor is located at the remote monitoring system.

7. The system of claim 5, the patient detecting system comprises a monitoring unit.

8. The system of claim 1, wherein the remote monitoring system comprises logic resources located at the remote monitoring system, the logic resources configured to determine a physiological event of the patient and determine the respiratory status of the patient.

9. The system of claim 7, wherein the monitoring unit comprises logic resources configured to determine the respiratory status of the patient and to determine a physiological event of a patient, the physiological event comprising apnea.

10. The system of claim 1, wherein the plurality of sensors are configured to monitor respiration of the patient with at least one of heart rate or pulse oximetry monitoring.

11. The system of claim 1, wherein the plurality of sensors are configured to monitor respiration of the patient with a bioimpedance sensor and at least one of heart rate monitoring or pulse oximetry monitoring.

12. The system of claim 1, wherein the adherent device is configured to monitor the patient'"'"'s respiration continuously.

13. The system of claim 1, wherein the adherent device is configured to monitor a pulmonary disorder comprising at least one of chronic obstructive pulmonary disease, asthma or sleep disordered breathing.

14. The system of claim 1, wherein the plurality of sensors comprises a posture sensor for orthopnea monitoring.

15. The system of claim 14, wherein the posture sensor comprises at least one of a piezoelectric accelerometer, capacitive accelerometer or electromechanical accelerometer.

16. The system of claim 14, wherein the posture sensor comprises a 3-axis accelerometer.

17. The system of claim 1, wherein the patient detecting system and the remote monitoring system are configured to monitor the patient for a patient sleep study.

18. The system of claim 17, wherein the plurality of sensors comprises a patient movement sensor.

19. The system of claim 18, wherein the patient movement sensor comprises at least one of a piezoelectric accelerometer, a capacitive accelerometer or an electromechanical accelerometer.

20. The system of claim 18, wherein the adherent device comprises a plurality of patches, wherein at least a first patch of the plurality is configured for placement a thorax of the patient, and at least a second patch of the plurality is configured for placement at another patient site away from the thorax to measure patient movement.

21. The system of claim 1, further comprising a processor configured to determine the respiratory status in response to a weighted combination of change in sensor outputs.

22. The system of claim 1, further comprising a processor configured to:

detect when a first rate of change of at least two sensor outputs measured over a first period of time is greater than a second rate of change in the sensor outputs measured over a second period of time that is longer than the first period of time; and

upon such detection, determine the respiratory status of the patient.

23. The system of claim 22 wherein the first period of time comprises no more than about 10 seconds and the second period of time comprises at least about one hour.

24. The system of claim 1, further comprising a processor configured to determine the respiratory status of the patient in response to a tiered combination of at least a first sensor output and a second sensor output, with the first sensor output indicating a problem that is then verified by at least a second sensor output.

25. The system of claim 1, further comprising a processor configured to determine a physiological event of the patient in response to a variance from baseline values of sensor outputs.

26. The system of claim 25, wherein the baseline values are defined by a look up table.

27. The system of claim 1, wherein the plurality of sensors comprises at least a first sensor, a second sensor and a third sensor.

28. The system of claim 1, wherein the cover comprises an elastomer.

29. The system of claim 28, wherein the elastomer is fenestrated.

30. The system of claim 1, wherein the cover comprises a breathable fabric.