Non-contact EKG

• US 6,728,576 B2
• Filed: 10/31/2001
• Issued: 04/27/2004
• Est. Priority Date: 10/31/2001
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Wilson, Suzanne L., Thompson, David L.
• Primary Examiner(s): LAYNO, CARL HERNANDZ
• Application Number:
  US10/004,045
• Publication Number:
  US 20030083714A1
• Time in Patent Office: 909 Days
• Field of Search: 128/903, 600/509, 600/513, 9/9, 9 3/0, 9 3/2, 9 3/7
• US Class Current: 607/30
• CPC Class Codes: A61N 1/37211 Means for communicating with stimulators
• CPC Class Codes: A61N 1/37235 Aspects of the external programmer
• CPC Class Codes: A61N 1/37252 Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data
• CPC Class Codes: A61N 1/37282 characterised by communication with experts in remote locations using a network

Abstract

A non-tissue contacting electrode system senses physiologic signals from a patient during implant and/or followup of an implantable medical device (IMD) via an external programmer or other monitoring instrument. These sensing systems are electrically connected to the circuitry of the external device and detect cardiac depolarization waveforms displayable as electrocardiographic tracings on the instrument screen when the programming head is positioned above an implanted pacemaker (or other implanted device) so equipped with a non-tissue contacting electrode system. The structure and system provide an enhanced capability for detecting and gathering physiological signals from a patient with minimally invasive patient contact.

Claims

1. A system including a non-tissue contacting electrode in cooperation with an external device, the system comprising:

an IMD in data communication with the external device; and

means for establishing the data communication between said IMD and the external device;

said means for establishing the data communication being adapted to incorporate the non-tissue contacting electrode wherein the non-tissue contact electrode includes sensing means to detect cardiac depolarization waveforms.

2. The system of claim 1 wherein said means for establishing the data communication includes a telemetry unit in operable data and electrical communications with the external device.

3. The system of claim 2 wherein said telemetry unit is a hand-holdable telemetry head adapted to be placed within a telemetry range of said IMD.

4. A system including a non-tissue contacting electrode in cooperation with an external device, the system comprising:

an IMD in data communication with the external device; and

means for establishing the data communication between said IMD and the external device;

the non-tissue contacting electrode being adapted to communicate with said external device such that EKG readings from the electrode are displayable on said external device.

5. The system according to claim 4 wherein said external device is a programmer.

6. The system according to claim 4 wherein at least two electrodes are implemented to sense EKG signals.

7. The system according to claim 6, further including means for selecting larger signals among signals sensed from said at least two electrodes.

8. A non-contact electrode system having at least one electrode, the system comprising:

means for adapting the least one of said non-contact electrode for attachment; and

means for transferring physiologic data obtained by said at least one electrode to an external device.

9. The system of claim 8 wherein said at least one electrode includes attachment to a programmer head.

10. The system of claim 8 wherein said at least one electrode includes attachment to an electrode strip.

11. The system of claim 8 wherein said physiologic data includes respiration signal implemented to provide one of implantable medical device follow-up, emphysema, edema and CHF monitoring and AVD optimization.

12. The system of claim 8 wherein said physiologic data includes data obtained in cooperation with an implanted medical device wherein capture detection and ischemia detection are obtained for monitoring.

13. A non-contact electrode in cooperation with a Web-enabled data management system, comprising:

means for transferring physiologic data collected from a patient with an implanted medical device (IMD);

an external device in data communication with the non-contact electrode to uplink and transfer said physiologic data;

interface means to transfer said physiologic data from said external device to a network; and

means to transfer said physiologic data from said network to a PC or a network server.

14. The system of claim 13 wherein said network is Web-enabled and is remotely located from the electrode location.

15. The system of claim 13 wherein said interface is one of a modem, cable, fiber optics and RF.

16. A method of collecting physiological data using one or more non-contact electrodes comprising:

positioning the one or more non-contact electrodes proximate to a patient; and

transferring physiologic data collected by the electrodes to an external device.

17. The method of claim 16 wherein the electrodes are implemented with a telemetry head wherein said transfer of data includes telemetry communication with an implanted medical device.