Remote monitoring of implanted medical device and surface ECG signals

• US 7,299,085 B2
• Filed: 04/23/2003
• Issued: 11/20/2007
• Est. Priority Date: 04/23/2003
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Naydenov, Narcis M., Bergelson, Michael
• Primary Examiner(s): Layno; Carl
• Assistant Examiner(s): LEE, YUN HAENG NMN
• Application Number:
  US10/422,533
• Publication Number:
  US 20040215089A1
• Time in Patent Office: 1,672 Days
• Field of Search: 600/509, 600/522, 600/523, 128/903, 128/904, 607/30, 607/32, 607/60, 607/27
• US Class Current: 600/509
• CPC Class Codes: A61B 5/0006 ECG or EEG signals
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• CPC Class Codes: A61N 1/3702 Physiological parameters A61N1/365 takes precedence; evoked response A61N1/371
• CPC Class Codes: A61N 1/37223 Circuits for electromagnetic coupling
• CPC Class Codes: A61N 1/37282 characterised by communication with experts in remote locations using a network
• CPC Class Codes: Y10S 128/903 Radio telemetry
• CPC Class Codes: Y10S 128/904 Telephone telemetry

Abstract

An integrated device for remote monitoring of implanted medical devices and surface ECG information includes components for collection of information from an implanted medical device, collection of surface ECG information, and remote communication of the collected information to a remote monitoring station. The remote monitoring station controls operation of the integrated device to automatically acquire the information without substantial patient intervention. In this manner, the device promotes accurate and timely collection of the information, and reduced depletion of battery resources within the implanted medical device.

Claims

1. A patient monitoring device comprising:

a telemetry interface to collect device information from an implanted medical device within a patient;

a surface electrocardiogram (ECG) interface to collect surface ECG information from the patient simultaneously with collection of the device information and to provide synchronization markers with the collected surface ECG information that identify a time period when the ECG information and the device information are being collected simultaneously, to allow synchronization of the device information with the surface ECG information; and

a telecommunication interface to transmit sequentially the surface ECG information and the device information to a remote monitoring station.

2. The device of claim 1, wherein the telemetry interface includes a radio frequency wand for placement in proximity with the implanted medical device.

3. The device of claim 1, wherein the surface ECG interface includes electrodes for placement on the patient.

4. The device of claim 3, further comprising wristbands that carry the electrodes.

5. The device of claim 3, further comprising a telephone handset that includes the surface ECG interface and the electrodes, wherein the telephone handset communicates with the telecommunication interface.

6. The device of claim 5, wherein the telephone handset comprises a mobile telephone handset.

7. The device of claim 3, wherein the telemetry interface includes a radio frequency wand for placement in proximity with the implanted medical device, the device further comprising a telephone handset that integrates the wand, the surface ECG interface and the electrodes.

8. The device of claim 7, wherein the wand and the electrodes are positioned on the handset to facilitate placement of the wand relative to the implanted medical device and placement of the electrodes in positions suitable for surface ECG monitoring when the handset is placed in contact with an upper chest region of the patient.

9. The device of claim 1, wherein the telemetry interface includes a radio frequency wand for placement in proximity with the implanted medical device, the device further comprising a telephone handset that integrates the wand.

10. The device of claim 9, wherein the telephone handset includes the surface ECG interface and a connection terminal to receive surface ECG electrodes.

11. The device of claim 10, wherein the ECG electrodes include adhesive-backed electrodes for placement on the patient.

12. The device of claim 10, further comprising wristbands that carry the ECG electrodes.

13. The device of claim 1, further comprising:

a memory to store the device information collected from the implanted medical device; and

a controller to selectively transmit the surface ECG information and the stored device information to the remote monitoring station via the telecommunication interface.

14. The device of claim 13, wherein the controller drives simultaneous collection of the device information and the surface ECG information.

15. The device of claim 14, further comprising:

a modem to transmit the device information to the remote monitoring station; and

a transtelephonic frequency modulator to transmit the surface ECG information.

16. The device of claim 13, wherein the controller generates time markers in response to collection of the device information, and incorporates the time markers in the surface ECG information.

17. The device of claim 13, wherein the controller is responsive to a control signal received from the remote monitoring station via the telecommunication interface to drive collection and transmission of the device information and the surface ECG information.

18. The device of claim 1, wherein the device information includes device parameter information and internal electrogram information obtained by the implanted medical device.

19. The device of claim 1, wherein the telecommunication interface includes a public switched telephone network interface.

20. The device of claim 1, wherein the telecommunication interface transmits the device information and the surface ECG information to the remote monitoring station within a single telephone call established by the telecommunication interface.

21. The device of claim 1, further comprising an output device to present information communicated to the device by the remote monitoring station.

22. A method comprising:

collecting device information from an implanted medical device within a patient;

collecting surface electrocardiogram (ECG) information from the patient simultaneously with the collecting of the device information;

providing synchronization markers with the collected surface ECG information that identify a time period when the ECG information and the device information are being collected simultaneously to allow synchronization of the device information with the surface ECG information; and

transmitting sequentially the surface ECG information and the device information to a remote monitoring station via a common telephone interface.

23. The method of claim 22, further comprising transmitting the device information and the surface ECG information to the remote monitoring station in the course of a single telephone call.

24. The method of claim 22, further comprising collecting the device information from the implanted medical device via a radio frequency wand placed in proximity with the implanted medical device.

25. The method of claim 22, further comprising collecting the surface ECG information via surface ECG electrodes placed on the patient.

26. The method of claim 25, further comprising collecting the surface ECG information from wristbands that carry the electrodes.

27. The method of claim 25, further comprising collecting the surface ECG information from a telephone handset that includes the surface ECG electrodes, wherein the handset is placed on the patient to cause contact between the surface ECG electrodes and the patient, and wherein the telephone handset communicates with the telephone interface.

28. The method of claim 27, wherein the telephone handset comprises a mobile telephone handset.

29. The method of claim 27, further comprising collecting the device information from the implanted medical device via a radio frequency wand placed in proximity with the implanted medical device, wherein the telephone handset integrates the wand and the electrodes.

30. The method of claim 29, wherein the wand and the electrodes are positioned on the handset to facilitate placement of the wand relative to the implanted medical device and placement of the electrodes in positions suitable for surface ECG monitoring when the handset is placed in contact with an upper chest region of the patient.

31. The method of claim 30, wherein the telephone handset includes the surface ECG interface and a connection terminal to receive surface ECG electrodes.

32. The method of claim 31, wherein the ECG electrodes include adhesive-backed electrodes for placement on the patient, the method further comprising adhering the electrodes to the patient.

33. The method of claim 31, further comprising attaching wristbands that carry the ECG electrodes to the patient.

34. The method of claim 22, further comprising:

storing the device information collected from the implanted medical device in a memory; and

selectively transmitting the surface ECG information and the stored device information to the remote monitoring station.

35. The method of claim 34, further comprising simultaneously collecting the device information and the surface ECG information.

36. The method of claim 35, further comprising:

transmitting the device information to the remote monitoring station via a modem; and

transmitting the surface ECG information via a transtelephonic modulator.

37. The method of claim 34, further comprising generating time markers in response to collection of the device information, and incorporating the time markers in the surface ECG information.

38. The method of claim 34, further comprising receiving a control signal received from the remote monitoring station, and collecting and transmitting the device information and the surface ECG information in response to the control signal.

39. The method of claim 22, wherein the device information includes device parameter information and internal electrogram information obtained by the implanted medical device.

40. The method of claim 22, further comprising transmitting the device information and the surface ECG information via a public switched telephone network interface.

41. The method of claim 22, further comprising transmitting the device information and the surface ECG information to the remote monitoring station within a single telephone call.

42. The method of claim 22, further comprising presenting to the patient information communicated to the device by the remote monitoring station.

43. A patient monitoring system comprising:

a remote monitoring station; and

a patient monitoring device including a telemetry interface to collect device information from an implanted medical device within a patient, a surface electrocardiogram (ECG) interface to collect surface ECG information from the patient simultaneously with the collection of the device information and provide synchronization markers with the collected surface ECG information that identify a time period when the ECG information and the device information are being collected simultaneously to allow synchronization of the device information with the surface ECG information, a telecommunication interface to transmit sequentially the surface ECG information and the device information to the remote monitoring station.

44. The system of claim 43, wherein the remote monitoring station includes a transtelephonic interface to receive the surface ECG information, and a modem interface to receive the device information.

45. The system of claim 43, wherein the remote monitoring station includes a report generation module to present the surface ECG information and the device information.

46. The system of claim 43, wherein the patient monitoring device includes a telemetry interface having a radio frequency wand for placement in proximity with the implanted medical device.

47. The system of claim 43, wherein the patient monitoring device includes a surface ECG interface having electrodes for placement on the patient.

48. The system of claim 47, further comprising a telephone handset that includes the surface ECG interface and the electrodes, wherein the telephone handset communicates with the telecommunication interface.

49. The system of claim 48, wherein the telephone handset comprises a mobile telephone handset.

50. The system of claim 47, wherein the telemetry interface includes a radio frequency wand for placement in proximity with the implanted medical device, the device further comprising a telephone handset that integrates the wand, the surface ECG interface and the electrodes.

51. The system of claim 43, wherein the patient monitoring device includes:

a memory to store the device information collected from the implanted medical device; and

a controller to selectively transmit the surface ECG information and the stored device information to the remote monitoring station via the telecommunication interface.

52. The system of claim 51, wherein the controller drives simultaneous collection of the device information and the surface ECG information.

53. The system of claim 52, wherein the patient monitoring device includes a modem to transmit the device information to the remote monitoring station, and a transtelephonic modulator to transmit the surface ECG information.

54. The system of claim 51, wherein the controller generates time markers in response to collection of the device information, and incorporates the time markers in the surface ECG information.

55. The system of claim 51, wherein the controller is responsive to a control signal received from the remote monitoring station via the telecommunication interface to drive collection and transmission of the device information and the surface ECG information.

56. The system of claim 43, wherein the device information includes device parameter information and internal electrogram information obtained by the implanted medical device.

57. The system of claim 43, wherein the telecommunication interface includes a public switched telephone network interface.

58. The system of claim 43, wherein the telecommunication interface transmits the device information and the surface ECG information to the remote monitoring station within a single telephone call established by the telecommunication interface.

59. The system of claim 43, further comprising an output device to present information communicated to the device by the remote monitoring station.