Defibrillator with implantable medical device detection

• US 9,233,256 B2
• Filed: 08/30/2013
• Issued: 01/12/2016
• Est. Priority Date: 12/22/2005
• Status: Active Grant

• Current Assignee: Physio-Control Incorporated (Stryker Corporation)
• Original Assignee: Physio-Control Incorporated (Stryker Corporation)
• Inventors: Jorgenson, David
• Primary Examiner(s): Koharski, Christopher D
• Assistant Examiner(s): Patel, Natasha
• Application Number:
  US14/015,329
• Publication Number:
  US 20140005735A1
• Time in Patent Office: 865 Days
• Field of Search: 607/4, 607/5, 607/10, 607/32, 607/60
• US Class Current: 1/1
• CPC Class Codes: A61N 1/3605 Implantable neurostimulators for stimulating central or peripheral nerve system
• CPC Class Codes: A61N 1/36142 for improving safety
• CPC Class Codes: A61N 1/37211 Means for communicating with stimulators
• CPC Class Codes: A61N 1/37247 User interfaces, e.g. input or presentation means
• CPC Class Codes: A61N 1/3904 External heart defibrillators [EHD]
• CPC Class Codes: A61N 1/39044 in combination with cardiopulmonary resuscitation [CPR] therapy
• CPC Class Codes: A61N 1/3925 Monitoring; Protecting
• CPC Class Codes: A61N 1/3993 User interfaces for automatic external defibrillators
• CPC Class Codes: G09B 23/28 for medicine
• CPC Class Codes: G09B 23/288 for artificial respiration or heart massage

Abstract

In general, the invention is directed to techniques for using an external defibrillator to detect a presence of an implantable medical device (IMD) implanted within a patient, and providing therapy to the patient through communication between the external defibrillator and the IMD. An external defibrillator provides prompts to a user of the external defibrillator to determine the presence of an IMD implanted within the patient. For example, the external defibrillator may prompt the user to visually inspect the patient'"'"'s chest for signs that an IMD was implanted, such as a scar or raised portion of skin near the patient'"'"'s clavicles. As another example, the external defibrillator may prompt the user to place a detection device on the patient'"'"'s chest. The detection device may be coupled to the external defibrillator, and may employ a magnet to initiate telemetry by the IMD to detect the presence of the IMD.

Claims

1. An external defibrillator comprising:

a defibrillation therapy generator;

electrodes coupled to the defibrillation therapy generator; and

a detection device including an acoustically-based detector device that detects a presence of an implantable medical device (IMD) in a patient and that includes;

an indicator to guide placement of the detection device toward an IMD,

a bottom surface with an adhesive layer, wherein the bottom surface is the surface closest to the skin of the patient, and

a removable backing layer connected to the adhesive layer.

2. The external defibrillator of claim 1, further comprising an output medium that indicates the presence of the IMD.

3. The external defibrillator of claim 2, wherein the output medium provides at least one of a visual indication or an audible indication of the presence of the IMD.

4. The external defibrillator of claim 1, wherein the detection device is configured to trigger initiation of telemetry by the IMD and detect the presence of the IMD based on a reception of one or more telemetry signals from the IMD.

5. The external defibrillator of claim 1, wherein the detection device includes a magnet to trigger an initiation of telemetry by the IMD.

6. The external defibrillator of claim 5, further comprising a processor configured to receive information from the IMD via the telemetry signals, wherein the processor is configured to control the therapy generator to deliver therapy to the patient based at least in part on the received information.

7. The external defibrillator of claim 6, wherein the received information comprises electrogram information, electrocardiogram information, or IMD event information.

8. The external defibrillator of claim 7, wherein the received information comprises patient information or IMD information.

14. The external defibrillator of claim 1, wherein the indicator is either a visual indicator or an audio structured to inform a user of the nearness of the IMD.

15. The external defibrillator of claim 1, wherein the detection device comprises a metal-detecting device.

16. The external defibrillator of claim 1, wherein the detection device is a disposable device.

9. A method comprising:

detecting a presence of an implantable medical device (IMD) in a patient via an acoustically-based detection device associated with an external defibrillator;

guiding placement of the detection device toward the IMD via an indicator; and

indicating a presence of the IMD to a user of the external defibrillator,

attaching the detection device to the patient over the IMD via an adhesive layer located on the bottom surface of the detection device, the adhesive layer structured to be in contact with a skin of a patient.

10. The method of claim 9, wherein indicating the presence of the IMD comprises indicating the presence of the IMD via at least one of an audible indication or a visual indication.

11. The method of claim 9, further comprising:

triggering initiation of telemetry by the IMD in response to being placed near the IMD; and

communicating with the IMD via a telemetry device, wherein the telemetry device is integrated with the detection device.

12. The method of claim 11, further comprising:

receiving information from the IMD via the telemetry device; and

delivering therapy to the patient based at least in part on the received information.

13. The method of claim 12, wherein the received information includes electrogram information, electrocardiogram information, or IMD event information.

17. An external defibrillator comprising:

a detection device configured to detect a presence of an implantable medical device (IMD) in a patient, the detection device including an acoustic detector;

a defibrillation therapy generator configured to provide therapy to the patient based at least in part on whether the detection device has detected an IMD;

electrodes coupled to the defibrillation therapy generator; and

an indicator configured to guide placement of the detection device toward an IMD.

18. The external defibrillator of claim 17, wherein the detection device is a disposable device.

19. The external defibrillator of claim 17, wherein the detection device includes the indicator.

20. The external defibrillator of claim 17, wherein the detection device includes an adhesive layer located on a bottom surface of the detection device.

21. The external defibrillator of claim 17, wherein the detection device includes a metal detector.