Patient monitoring systems and methods

• US 8,823,490 B2
• Filed: 12/15/2009
• Issued: 09/02/2014
• Est. Priority Date: 12/15/2008
• Status: Active Grant

• Current Assignee: Medtronic Monitoring, Inc. (Medtronic Plc)
• Original Assignee: Corventis
• Inventors: Libbus, Imad, Amurthur, Badri, Manicka, Yatheendhar D., Mazar, Scott T., Merkert, Matt, Landrum, Brett A.
• Primary Examiner(s): BROWN, VERNAL U
• Application Number:
  US13/139,996
• Publication Number:
  US 20120108917A1
• Time in Patent Office: 1,722 Days
• Field of Search: 340/6.1, 340/5.64, 340/506, 340/524, 340/517, 705/2, 600/347, 600/365, 600/301
• US Class Current: 340/6.1
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• 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 5/0006 ECG or EEG signals
• 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 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/02055 Simultaneously evaluating both cardiovascular condition and temperature
• CPC Class Codes: A61B 5/0537 Measuring body composition by impedance, e.g. tissue hydration or fat content
• CPC Class Codes: A61B 5/085 Measuring impedance of respiratory organs or lung elasticity
• CPC Class Codes: A61B 5/1115 Monitoring leaving of a patient support, e.g. a bed or a wheelchair
• CPC Class Codes: A61B 5/1117 Fall detection
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• 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: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 40/67 for remote operation
• CPC Class Codes: Y10S 128/903 Radio telemetry

Abstract

An adherent patient device is configured to adhere to the skin of the patient and measure electrocardiogram data, impedance data, accelerometer data, blood oxygen data and temperature data. The adherent device can communicate wirelessly with gateways and a local processor system, such that the patient can wander about the hospital and update the monitoring station with the patient data when the patient is ambulatory. The local processor system can be configured to customize alerts for the patient, for example to notify automatically a specialist in response to a special condition of the patient. The adherent device may comprise a unique adherent device identifier such that the customized alert can be sent based on the unique device identifier. Each of the gateways can be carried and may comprise a unique gateway identifier, such that the unique device identifier and the unique gateway identifier can be used to locate the ambulatory patient.

Claims

1. A system to monitor a plurality of patients, the system comprising:

a plurality of adherent patient devices, each adherent patient device comprising a unique patient device identifier, an adhesive and wireless communication circuitry, said each device configured to adhere to a skin of one of the plurality of patients to measure patient data and support the wireless communication circuitry, the wireless communication circuitry configured to transmit the patient data;

a local processor system comprising a tangible medium and at least one display disposed at a monitoring station, the local processor system configured to receive the patient data and display the patient data to a user at the monitoring station; and

a plurality of gateways configured to receive the patient data from the wireless communication circuitry and transmit the patient data to the local processor system, wherein each gateway is positioned at a unique location and wherein each gateway of the plurality of gateways comprises a unique gateway identifier and wherein each gateway of the plurality of gateways is configured to transmit the unique gateway identifier, the unique patient device identifier and the patient data to the local processor system and wherein the local processor system is configured to determine the location of each patient in response to the unique gateway identifier and the unique patient device identifier.

2. The system of claim 1 wherein the monitoring station comprises a nurses'"'"' station, the user comprises a plurality of nurses and the at least one display comprises a central terminal disposed at the nurses'"'"' station to display the patient data to the plurality of nurses and wherein the at least one display is configured to display a status of each of the plurality of patients.

3. The system of claim 1 wherein each adherent patient device comprises a unique device identifier and wherein the local processor system is configured to customize an alert for each adherent device of the plurality based on the unique device identifier.

4. The system of claim 3 wherein each patient has a unique patient identifier and wherein the local processor system is configured to associate the unique device identifier with at least one of the unique patient identifier, a name of the patient, an assigned room of the patient or an assigned bed of the patient.

5. The system of claim 4 wherein the local processor system is configured to associate the unique device identifier with the unique patient identifier and send the customized alter to the physician in response to the unique device identifier.

6. The system of claim 3 wherein the local processor system comprises at least one handheld mobile device configured to customize the alert.

7. The system of claim 3 wherein the local processor system is configured to customize the alerts with at least one of a physician to notify, a family member to notify or a health care provider to notify.

8. The system of claim 3 wherein the local processor system is configured to customize the alerts in response to a condition of the patient and to select a specialized physician to notify in response to a special condition of the patient, the specialized physician comprising at least one of a cardiologist, a nephrologist or an obstetrician and wherein the specialized condition comprises at least one of a heart condition, a kidney condition or a fetal condition.

9. The system of claim 1 further comprising a plurality of alert devices comprising at least one of a light, a beeper, a buzzer and wherein each of the plurality of alert devices is located on one or more of the adherent patient device, the gateway, the monitoring station or an alarm device coupled to the gateway.

10. The system of claim 9 wherein the alert device comprises the alarm device coupled to the gateway and wherein the local processor system is configured to activate each alarm device in response to a unique gateway identifier and a unique adherent device identifier.

11. The system of claim 9 wherein each alert device comprises a switch to deactivate the alert device.

12. The system of claim 1 wherein the local processor system comprises a front end server connected to the plurality of gateways, the front end server configured to receive the patient data from the plurality of gateways and show the patient data on the at least one display.

13. The system of claim 1 further comprising a remote processor system having a back end server located remote from the front end server, the back end server configured to receive at least a portion of the patient data from the front end server.

14. The system of claim 13 wherein the local processor system is configured to detect an immediate life threatening condition of the patient and issue an alert in response to the patient data and wherein the remote processor system is configured to detect a non-immediate life threatening condition of the patient and issue an alert in response to the patient data.

15. The system of claim 14 wherein the immediate life threatening condition comprises at least one of an immediate life threatening heart condition or an immediate life threatening fetal condition and wherein the non-immediate life threatening condition comprises at least one of a non-life threatening heart condition, a non-life threatening kidney condition or a non-life threatening fetal condition.

16. The system of claim 15 wherein the life immediate threatening condition comprises the immediate life threatening heart condition and the immediate life threatening heart condition comprises at least one of a ventricular tachycardia or a ventricular fibrillation and wherein the non-life threatening condition comprises the non-life threatening heart condition and the non-life threatening heart condition comprises at least one of a non-sustained ventricular tachycardia or an atrial fibrillation.

17. The system of claim 1 wherein each adherent patient device comprises an adherent device processor comprising a tangible medium configured to process the patient data, each gateway comprises a gateway processor comprising a tangible medium configured to process patient data and wherein the local processor system is configured to process patient data transmitted from the plurality of gateway devices and transmit processed patient data to a remote processor system.

18. The system of claim 1 wherein each adherent patient device comprises a unique patient device identifier and wherein the local processor system is configured to store a list with the unique patient device identifier for each adherent patient device adhered to the patient, and wherein each gateway of the plurality of gateways is configured to communicate with at least one of the plurality of patient devices in response to the list.

19. The system of claim 18 wherein each gateway is configured to transmit patient data and the unique patient device identifier in response to the list.

20. The system of claim 18 wherein local processor system is configured to receive the patient data and determine locations of the plurality of patients when at least some of the patients are mobile.

21. The system of claim 18 wherein the local processor system is configured to change the list to an updated list and transmit at least a portion of the updated list to at least a portion of the plurality of gateways when one of the plurality of adherent devices is at least one of adhered to or removed from one of the patients.

22. The system of claim 20 wherein a first portion of the plurality of gateways is configured to communicate with a first portion of the plurality of adherent patient devices adhered to a first portion of the plurality of patients and wherein a second portion of the plurality of gateways is configured to communicate with a second portion of the plurality of adherent patient devices adhered to a second portion of the plurality of patients.

23. The system of claim 22 wherein the first portion of the plurality of gateways cover a first area and wherein the second portion of the plurality of gateways cover a second area, the first area overlapping substantially with the second area, such that the first portion of adherent devices transmit patient data through the first portion of the plurality of gateways when the first portion of the plurality of patients roam through the second area and wherein the second portion of adherent devices transmit patient data through the second portion of the plurality of gateways when the second portion of the plurality of patients roam through the first area.

24. The system of claim 22 wherein the first portion of the plurality of gateways comprises a first unique gateway device list comprising the unique identifiers of the first portion of patient devices and wherein the second portion of the plurality of gateways comprises a second unique gateway device list comprising the unique identifiers of the second portion of patient devices.

25. The system of claim 24 wherein the first portion of the plurality of gateways comprises at least about five gateways and the first portion of the plurality of adherent patient devices comprises at least about ten adherent patient devices and wherein the second portion of the plurality of gateways comprises at least about five gateways and the second portion of the plurality of adherent patient devices comprises at least about ten adherent patient devices.

26. The system of claim 1 wherein the adherent patient device comprises a plurality of adherent patient devices configured to adhere simultaneously to the patient on opposite sides of a chest of the patient to enhance fidelity of data signal measured from the patient.

27. The system of claim 1 wherein the plurality of adherent patient devices comprises a first adherent device comprising first wireless communication circuitry and a second adherent device comprising second wireless communication circuitry, the first adherent device comprising a first at least two electrodes to measure a first cardiac vector on a first side of the chest and the second adherent device comprises a second adherent device comprising a second at least two electrodes to measure a second cardiac vector, and wherein the first wireless communication circuitry is configured to transmit the first cardiac vector and the second wireless communication circuitry is configured to transmit the second cardiac vector.

28. The system of claim 1 wherein the adherent patient device comprises a GPS receiver to locate the adherent patient device adhered to the patient.

29. The system of claim 1 wherein at least one of the adherent patient device, the gateway or the monitoring station comprise a battery indicator to indicate battery power.

30. The system of claim 1 wherein the plurality of gateways comprises a hospital-wide gateway network configured to monitor the plurality of patients when at least some the patients are ambulatory and roam the hospital.

31. The system of claim 1 wherein each gateway of the plurality of gateways comprises first wireless communication circuitry configured to communicate with one or more of the plurality of adherent patch devices and second wireless communication circuitry configured to communicate with a transceiver of the local processor system.

32. The system of claim 31 wherein each gateway of the plurality of gateways is configured to be carried by a patient of the plurality of patients.

33. The system of claim 32 wherein each gateway of the plurality of gateways is configured to communicate directly with the transceiver of the local processor system.

34. The system of claim 33 wherein each gateway of the plurality of gateways is configured to communicate with a cellular connection to the transceiver of the local processor system.

35. The system of claim 32 wherein each gateway of the plurality of gateways is configured to communicate with at least one other gateway of the plurality of gateways with a mesh wireless communication protocol.

36. The system of claim 35 wherein the mesh wireless communication protocol comprises ZigBee.

37. The system of claim 35 wherein each gateway of the plurality of gateways comprises a unique gateway device identifier.

38. The system of claim 37 wherein each gateway of the plurality is configured to communicate with at least one other gateway in response to the unique gateway device identifier of the at least one other gateway.

39. The system of claim 38 wherein each gateway of the plurality comprises a list of unique gateway device identifiers and wherein each gateway is configured to communicate with the at least one other gateway in response to the list.

40. The system of claim 39 wherein the list at each gateway comprises at least one unique gateway identifier and at least one of a unique patient identifier or a unique device identifier, and wherein each gateway is configured to communicate with the at least one other gateway in response to the at least one unique gateway identifier and to communicate with one or more of the plurality of adherent devices in response to the at least one of the unique patient identifier or the unique adherent device identifier.

41. The system of claim 39 wherein each gateway of the plurality is configured to transmit the unique gateway device identifier with the patient data to determine which gateways transmit the patient data for each patient to the local processor system.

42. The system of claim 41 wherein each gateway of the plurality is configured to transmit the unique gateway device identifier with the patient data to determine a path of the patient data.

43. The system of claim 1 wherein each adherent patient device comprises, impedance circuitry configured to measure patient impedance data to determine at least one of patient hydration or patient respiration, electrocardiogram circuitry configured to measure an electrocardiogram data of the patient, accelerometer circuitry to measure acceleration data of the patient, oximeter circuitry to measure blood oxygen data of the patient, and at least one of a temperature sensor or a heat flux sensor configured to measure temperature data of the patient, wherein the wireless communication circuitry is configured to transmit the impedance data, the electrocardiogram data, the accelerometer data or the temperature data to at least one gateway of the plurality of gateways.

44. The system of claim 1 at least one of the local processor system or the processor of the adherent patch device is configured to trigger an alert in response to at least one of a patient fall, a patient respiratory distress or a patient oxygen distress.

45. The system of claim 1, wherein each adherent patient device comprises an emergency switch operable by the patient to trigger an emergency notification transmission.

46. The system of claim 45, wherein:

each adherent patient device comprises a unique device identifier;

the patient-initiated emergency notification transmission comprises the unique device identifier; and

the local processor system is configured to receive the patient-initiated emergency notification transmission and identify the originating adherent patient device in response to the received emergency notification.

47. The system of claim 46, wherein:

each patient has a unique patient identifier; and

the local processor system is configured to associate the unique device identifier of the received emergency notification with at least one of the unique patient identifier, a name of the patient, an assigned room of the patient, or an assigned bed of the patient.

48. A method of monitoring a plurality of patients, the method comprising:

adhering at least one adherent patient device comprising wireless communication circuitry to a skin of at least one patient of the plurality of patients to measure patient data, such that the wireless communication circuitry is supported with the skin of the patient, wherein the at least one adherent patient device comprises a plurality of adherent patient devices in which each of the adherent patient devices comprises a unique device identifier;

transmitting the patient data from the at least one adherent device with the wireless communication circuitry to at least one gateway, wherein the at least one gateway comprises a list of unique adherent device identifiers and wherein the at least one gateway comprises a plurality of wireless communication gateways each having a unique gateway identifier and the list of unique adherent device identifiers; and

transmitting the patient data and unique gateway identifier from the at least one gateway to a local processor system, wherein a location of the patient is determined in response to the unique adherent device identifier and the unique gateway identifier when the patient is ambulatory.

49. The method of claim 48 wherein the local processor system is configured to send customized alerts in response to the patient data.

50. The method of claim 48 the patient data are transmitted with wireless communication from the at least one gateway to a local processor system.

51. The method of claim 50 wherein the at least one gateway is carried by the at least one patient.

52. The method of claim 51 wherein the at least one gateway transmits the patient data directly to a transceiver of the local processor system.

53. The method of claim 52 wherein each gateway of the plurality of gateways is configured to communicate with a cellular connection to the transceiver of the local processor system.

54. The method of claim 53 wherein at least one gateway communicates with at least one other gateway a mesh wireless communication protocol, such that the patient data is transmitted indirectly from the gateway to the local processor system via the at least one other gateway.

55. The method of claim 48, further comprising transmitting an emergency notification from one of the at least one adherent patient device in response to the patient operating an emergency notification switch on said adherent patient device to trigger the emergency notification transmission.

56. The method of claim 55, wherein the emergency notification is transmitted to said at least one gateway, the method further comprising transmitting the emergency notification from said at least one gateway to said local processor system.

57. The method of claim 56, wherein each adherent patient device comprises a unique device identifier and the patient-initiated emergency notification transmission comprises the unique device identifier, the method further comprising indicating the originating adherent patient device by said local processor system in response to the emergency notification.

58. The method of claim 57, wherein each patient has a unique identifier, the method further comprising indicating by said local processor system in response to the received emergency notification at least one of the unique patient identifier, a name of the patient, an assigned room of the patient, or an assigned bed of the patient.

59. A method of monitoring a plurality of patients, the method comprising:

transmitting first patient data from a first patient measurement device on a first patient to a first gateway with wireless communication;

transmitting the first patient data from the first gateway to a transceiver of a local processor system with a first wireless communication link;

transmitting second patient data from a second patient measurement device on a second patient to a second gateway with wireless communication; and

transmitting the second patient data from the second gateway to the first gateway in response to decoupling of the second gateway with the transceiver.

60. The method of claim 59 wherein the first gateway transmits the second patient data to the transceiver of the local processor system with the first wireless communication link.

61. The method of claim 59 wherein the second gateway is initially coupled directly to the transceiver and is decoupled from the second transceiver in response to movement of the second patient.

62. A system to monitor a plurality of patients, the system comprising:

a plurality of patient measurement devices configured to measure patient data from a plurality of patients and transmit the patient data;

a local processor system comprising a tangible medium and at least one display disposed at a monitoring station, the local processor system comprising a transceiver configured to receive the patient data and display the patient data to a user at the monitoring station; and

a plurality of gateways configured to receive the patient data from the plurality of patient measurement devices, each gateway configured to couple with at least one of the patient measurement devices and transmit the patient data to the local processor system, wherein each of the gateways is configured to couple directly with the transceiver of the processor system when the transceiver is suitable for coupling and to couple with another gateway of the plurality when the transceiver signal is weak.

63. The system of claim 62 wherein the transceiver of the local processor system is configured for placement at the monitoring station.