IMPLANTED LEAD ANALYSIS SYSTEM AND METHOD

• US 20160030752A1
• Filed: 07/29/2015
• Published: 02/04/2016
• Est. Priority Date: 07/29/2014
• Status: Active Grant

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Mahajan, Deepa, Perschbacher, David L., Sharma, Arjun D.
• Granted Patent: US 9,764,144 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/276 Protection against electrode failure
• CPC Class Codes: A61B 5/29 for permanent or long-term implantation
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 1/37 Monitoring; Protecting

Abstract

Implanted medical device data is received, where the data was sensed by a first lead portion and a sensor over a time period. The number of detected noise events sensed by the first lead portion is counted based on applying first noise detection criteria to the data sensed by the first lead portion. The number of detected noise events over the sensor is counted based on applying second noise detection criteria to the data sensed by the sensor. The mean number of detected noise events is calculated for the first lead portion and sensor based on the number of noise events sensed by the first lead portion and the number of noise events sensed by the sensor. Potential lead failure in the first lead is recorded if the number of detected noise events over the first lead is greater than the mean number of noise events by at least 5%.

Claims

1. A method comprising:

receiving implanted medical device data, wherein the medical device data was sensed by a first lead portion and a sensor over a period of time of at least one day;

applying first noise detection criteria to the medical device data sensed by the first lead portion;

counting the number of detected noise events sensed by the first lead portion over the time period based on the first noise detection criteria;

applying second noise detection criteria to the medical device data sensed by the sensor;

counting the number of detected noise events over the sensor over the time period based on the second noise detection criteria;

calculating the mean number of detected noise events over the time period, wherein at least the number of detected noise events sensed by the first lead portion and the number of detected noise events sensed by the sensor are included in the mean calculation; and

recording a determination of potential lead failure in the first lead if the number of detected noise events over the first lead over the time period is greater than the mean number of noise events by at least 5%.

12. A system comprising:

an implantable medical device having a plurality of sensors configured to sense patient physiological data, wherein the plurality of sensors comprise at least one lead;

processing circuitry configured to;

receive the patient physiological data,

apply noise detection criteria to patient physiological data sensed by each of the plurality sensors to count the number of noise events over each sensor,

calculate the mean number of noise events from all of the sensors, and

compare the number of noise events from each lead to the mean number of noise events; and

a user interface in communication with the processing circuitry configured to display an alert representing potential lead failure for each lead that had a total number of noise events greater than the mean number of noise events.

13. The system of claim 27, wherein the processing circuitry is disposed within the implantable medical device.

14. The system of claim 27, wherein a portion of the processing circuitry is disposed within the implantable medical device and another portion of the processing circuitry is disposed in a communicator that is configured for communication with the implantable medical device.

15. The system of claim 27, wherein the processing circuitry is configured to apply different noise detection criteria to each of the sensors.

16. The system of claim 27, wherein the processing circuitry is configured to receive the patient physiological data that was sensed over a time period of at least two weeks.

2. The method of claim 16, further comprising recording a determination of potential electro-magnetic interference when the number of detected noise events over the first lead is within a margin of the mean number of noise events and the mean number of noise events is above a threshold.

3. The method of claim 16, wherein the first lead portion and the sensor are different locations along a single lead.

4. The method of claim 16, wherein the first lead portion and the sensor are different leads.

5. The method of claim 16, wherein the first noise detection criteria defines a first threshold number of beats that are faster than a first fast beat threshold and the second noise detection criteria defines a second threshold number of beats that are faster than second fast beat threshold, wherein the second fast beat threshold is different than the first fast beat threshold.

10. The method of claim 16, wherein the time period is at least two weeks.

11. The method of claim 16, further comprising recording a determination representing potential lead failure in the sensor if the number of detected noise events over the sensor over the time period is greater than the mean number of noise events.

17. The system of claim 27, wherein the user interface is configured to display an alert of potential electro-magnetic interference when the number of detected noise events over a lead is within a margin of the mean number of noise events and the mean number of noise events is above a threshold.

18. The system of claim 30, wherein the at least one lead comprises a first lead that is a right atrial lead and the processing circuitry is configured to apply a first noise detection criteria to the first lead that comprises sensing a plurality of sensed beats within an episode that are faster than 110 milliseconds.

19. The system of claim 30, wherein the at least one lead comprises a second lead that is a left ventricular lead and the processing circuitry is configured to apply a second noise detection criteria to the second sensor that comprises sensing a plurality of sensed beats within an episode that are faster than 275 milliseconds.

20. The system of claim 27, wherein the noise detection criteria requires at least four beats within an episode to be faster than a threshold.

6. The method of claim 20, wherein the sensor is a right ventricular lead and the second fast beat threshold is 160 milliseconds.

7. The method of claim 20, wherein the sensor is a left ventricular lead and the second fast beat threshold is 275 milliseconds.

8. The method of claim 20, wherein the sensor is a right atrial lead and the second fast beat threshold is 110 milliseconds.

9. The method of claim 20, wherein the first threshold number of beats is four beats within an episode.