Paired communication between an implanted medical device and an external control device

• US 9,974,108 B2
• Filed: 02/06/2012
• Issued: 05/15/2018
• Est. Priority Date: 02/06/2012
• Status: Active Grant

• Current Assignee: Cirtec Medical Corp.
• Original Assignee: Nuvectra Corporation
• Inventors: Polefko, Richard J.
• Primary Examiner(s): Abedin, Normin
• Assistant Examiner(s): BUKHARI, SIBTE H
• Application Number:
  US13/366,705
• Publication Number:
  US 20130205032A1
• Time in Patent Office: 2,290 Days
• Field of Search: 607 59, 607 60, 709227
• CPC Class Codes: H04L 63/0876 based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
• CPC Class Codes: H04W 76/18 Management of setup rejection or failure

Abstract

A method of identifying an external device that sent a message and then determining whether to process the message based in part on the identity of the external device that sent the message. The implanted device receives a message from the external device and identifies an external device ID in the received message. The external device ID identifies the external device that sent the message. The implanted device then compares the external device ID from the message to a stored list of approved external device IDs. The implanted device processes the message when the external device ID matches one or the approved external device IDs in the stored list of approved external device IDs. However, the message is disregarded when the external device ID does not match any of the approved external device IDs in the stored list of approved external device IDs.

Claims

1. A method of communicating between an implanted medical device implanted in a patient and an authorized external device external to the patient, comprising:

receiving, by the implanted device, a first data packet of a new message from an external device;

identifying an external device ID in the received data packet, the external device ID identifying an external device that sent the message, the external device ID containing a value;

determining whether the value of the external device ID falls within a predetermined range, the predetermined range being set before the any communication is established between the external device and the implanted device;

in response to the value of the external device ID being determined to fall within the predetermined range, performing the following steps;

determining that the external device is a clinical control device with which communication is always approved; and

processing the message from the external device; and

in response to the value of the external device ID being determined to fall outside of the predetermined range, performing the following steps;

determining that the external device is not the clinical control device;

comparing the external device ID to a stored list of a plurality of approved external device IDs;

processing the message when the external device ID matches one of the approved external device IDs in the stored list of approved external device IDs; and

disregarding the message when the external device ID does not match any of the approved external device IDs in the stored list of approved external device IDs;

wherein;

the message sent from the first external device to the implanted medical device includes a header and a body;

the first device identifier is located in the header of the message; and

the second device identifier is located in the body of the message.

2. The method of claim 1, further comprising:

determining whether the external device ID is an external device ID corresponding to a clinical control device based on whether the value of the external device ID falls within the predetermined range;

processing all messages received from the clinical control device; and

processing messages received from external devices other than the clinical control device only when the external device ID matches one of the approved external device IDs in the stored list of approved external device IDs.

3. The method of claim 2, wherein the value of the external device ID includes a multiple-byte value, wherein the determining whether the external device ID is an external device ID corresponding to a clinical control device includes:

comparing the multiple-byte value of the external device ID to a range of external device ID values corresponding to clinical control devices; and

determining that the external device ID is an external device ID corresponding to a clinical control device when the multiple-byte value of the external device ID is within the range.

4. The method of claim 2, wherein when the external device ID is the external device ID corresponding to the clinical control device and the received message is a new pairing message, further comprising:

identifying a new approved external device ID in the new pairing message; and

storing the new approved external device ID to the stored list of approved external device IDs.

5. The method of claim 2, wherein when the external device ID is the external device ID corresponding to the clinical control device and the received message is a remove pairing message, further comprising:

identifying a disapproved external device ID in the remove pairing message; and

removing the disapproved external device ID from the stored list of approved external device IDs.

6. The method of claim 1, further comprising:

identifying a message type of the received message;

processing the message only when a device corresponding to the external device ID is authorized to send messages of the identified message type; and

disregarding the message when the device corresponding to the external device ID is not authorized to send messages of the identified message type.

19. The method of claim 1, wherein the external device ID comprises an alphanumeric format.

7. An implantable medical device comprising:

a processor; and

a memory storing instructions that, when executed by the processor, cause the implantable medical device to;

receive a first data packet of a new message from an external device;

identify an external device ID in the received data packet, the external device ID identifying an external device that sent the message, the external device ID containing a value;

determine whether the value of the external device ID falls within a predetermined range, the predetermined range being set before the any communication is established between the external device and the implanted device;

in response to the value of the external device ID being determined to fall within the predetermined range, performing the following steps;

determining that the external device is a clinical control device with which communication is always approved; and

processing the message from the external device; and

in response to the value of the external device ID being determined to fall outside of the predetermined range, performing the following steps;

determining that the external device is not the clinical control device;

compare the external device ID to a stored list of a plurality of approved external device IDs;

process the message when the external device ID matches one of the approved external device IDs in the stored list of approved external device IDs; and

disregard the message when the external device ID does not match any of the approved external device IDs in the stored list of approved external device IDs;

wherein;

the message sent from the first external device to the implanted medical device includes a header and a body;

the first device identifier is located in the header of the message; and

the second device identifier is located in the body of the message.

8. The implantable medical device of claim 7, wherein the memory stores further instructions, which, when executed by the processor, further cause the implantable medical device to:

determine whether the external device ID is an external device ID corresponding to a clinical control device based on whether the value of the external device ID falls within the predetermined range;

process all messages received from clinical control devices; and

process message received from external devices other than clinical control devices only when the external device ID matches one of the approved external device IDs in the stored list of approved external device IDs.

9. The implantable medical device of claim 8, wherein the value of the external device ID includes a multiple-byte value, wherein the memory stores further instructions, which, when executed by the processor, further cause the implantable medical device to:

compare the multiple-byte value of the external device ID to a range of external device ID values corresponding to clinical control devices; and

determine that the external device ID is an external device ID corresponding to a clinical control device when the multiple-byte value of the external device ID is within the range.

20. The implantable medical device of claim 7, wherein the external device ID comprises an alphanumeric format.

10. A stimulation system comprising:

an external device including a first wireless communication module; and

an implantable device including a stimulation module configured to provide electrical stimulation to a patient, the implantable device including a second wireless communication module configured to conduct telecommunications with the first wireless communication module, a memory storing instructions, and a processor configured to execute the instructions to;

receive a first data package of a new message from the first wireless communication module of the external device;

identify an external device ID in the received data packet, the external device ID identifying the external device that sent the message, the external device ID containing a value;

determine whether the value of the external device ID falls within a predetermined range the predetermined range being set before the any communication is established between the external device and the implanted device;

in response to the value of the external device ID being determined to fall within the predetermined range, performing the following steps;

determining that the external device is a clinical control device with which communication is always approved; and

processing the message from the external device; and

in response to the value of the external device ID being determined to fall outside of the predetermined range, performing the following steps;

determining that the external device is not the clinical control device;

compare the external device ID to a stored list of approved external device IDs;

process received messages that include an approved external device ID; and

disregard messages that do not include an approved external device ID;

wherein;

the message sent from the first external device to the implanted medical device includes a header and a body;

the first device identifier is located in the header of the message; and

the second device identifier is located in the body of the message.

11. The stimulation system of claim 10, wherein the first wireless communication module is configured to:

transmit a message including an external device ID of the external device, the message being intended for the implanted device;

receive a response message from the implantable device, the message indicating that the external device ID matches an external device ID from a list of approved external device IDs stored in a memory of the implanted medical device;

store an implanted device ID corresponding to the implantable device that sent the response message; and

send subsequent command messages to control the operation of the implantable device.

12. The stimulation system of claim 11, wherein the first wireless communication module is further configured to:

send a subsequent message to the implantable device, the subsequent message including the external device ID for the external device;

receive a subsequent response message from the implantable device, the subsequent response message indicating that the external device ID from the subsequent message does not match any external device ID from the stored list of approved external device IDs; and

indicate that the implantable device corresponding to the implanted device ID stored in the memory of the external device is no longer paired with the external device.

13. A method, comprising:

initiating, by a first external device external to a patient, communication with an implanted medical device within communication range of the first external device, the implanted medical device being implanted in the patient;

receiving, by a first external device, a second device identifier associated with a second external device that is external to the patient, the second external device being different from the first external device;

sending, from the first external device, a message to the implanted medical device, the message containing;

a first device identifier associated with the first external device, the second device identifier, and a pairing command instructing the implanted medical device to pair with the second external device; and

receiving, by the first external device, a confirmation message from the implanted medical device that a pairing between the implanted medical device and the second external device has been successful;

wherein;

the message sent from the first external device to the implanted medical device includes a header and a body;

the first device identifier is located in the header of the message; and

the second device identifier is located in the body of the message.

14. The method of claim 13, further comprising:

processing, by the implanted medical device, the message sent from the first external device in response to a determination that a value of the first device identifier falls within a predetermined range; and

storing, by the implanted medical device, the second device identifier to a list of approved external devices.

15. The method of claim 13, wherein:

the first external device is a clinical control device; and

the second external device is a patient control device.

16. An clinical control device external to a patient for communicating with an implanted medical device implanted in the patient, the clinical control device comprising:

a processor; and

a memory storing instructions that, when executed by the processor, cause the external device to perform the following operations;

initiating, by the clinical control device, communication with the implanted medical device within communication range of the clinical control device, the implanted medical device being implanted in the patient;

receiving, by the clinical control device, a second device identifier associated with a patient control device that is external to the patient, wherein the patient control device is different from the clinical control device;

sending, from the clinical control device, a message to the implanted medical device, the message containing;

a first device identifier associated with the clinical control device, the second device identifier, and a pairing command instructing the implanted medical device to pair with the patient control device; and

receiving, by the clinical control device, a confirmation message from the implanted medical device that a pairing between the implanted medical device and the patient control device has been successful;

wherein;

the message sent from the first external device to the implanted medical device includes a header and a body;

the first device identifier is located in the header of the message; and

the second device identifier is located in the body of the message.

17. The clinical control device of claim 16, wherein the operations further comprise:

processing, by the implanted medical device, the message sent from the clinical control device in response to a determination that a value of the first device identifier falls within a predetermined range; and

storing, by the implanted medical device, the second device identifier to a list of approved external devices.

18. The clinical control device of claim 16, wherein the first device identifier contains a value that falls within a predetermined range of values that are recognizable by the implanted medical device.