Systems and methods for classifying signals of interest in a cardiac rhythm management device

Patent metadata

Field	Value
Publication number	US-10182765-B2
Application number	US-201514862810-A
Country	US
Kind code	B2
Filing date	Sep 23, 2015
Priority date	Sep 23, 2015
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

The present disclosure provides systems and methods for classifying signals of interest in a cardiac rhythm management (CRM) device. A CRM device includes an intrinsic activation sensing circuit configured to pass signals falling within a first passband, a crosstalk sensing circuit configured to pass signals falling within a second passband, wherein the second passband contains higher frequencies than the first passband, and a computing device communicatively coupled to the intrinsic activation sensing circuit and the crosstalk sensing circuit, the computing device configured to classify a signal of interest as one of an intrinsic activation signal and a crosstalk signal based on whether the signal of interest is passed by the intrinsic activation sensing circuit and the crosstalk sensing circuit.

First claim

What is claimed is:

1. A cardiac rhythm management (CRM) device comprising:
an intrinsic activation sensing circuit configured to pass signals falling within a first passband;
a crosstalk sensing circuit configured to pass signals falling within a second passband, wherein the second passband contains higher frequencies than the first passband; and
a computing device communicatively coupled to the intrinsic activation sensing circuit and the crosstalk sensing circuit, the computing device configured to classify a signal of interest as one of an intrinsic activation signal and a crosstalk signal based on whether the signal of interest is passed by the intrinsic activation sensing circuit and the crosstalk sensing circuit, wherein to classify a signal of interest, the computing device is configured to classify the signal of interest as an intrinsic activation signal when the signal of interest is passed by the intrinsic activation sensing circuit and not passed by the crosstalk sensing circuit.

2. The CRM device of claim 1 , wherein the second passband has a lower cutoff frequency greater than or equal to 500 Hz.

3. The CRM device of claim 1 , wherein the second passband has a lower cutoff frequency greater than or equal to 1000 Hz.

4. The CRM device of claim 1 , wherein the second passband has a center frequency equal to approximately 25,000 Hz.

5. The CRM device of claim 1 , wherein the CRM device is configured to adjust pacing of a patient's heart based on the classification of the signal of interest.

6. A cardiac rhythm management (CRM) device comprising:
an intrinsic activation sensing circuit configured to pass signals falling within a first passband;
a crosstalk sensing circuit configured to pass signals falling within a second passband, wherein the second passband contains higher frequencies than the first passband; and
a computing device communicatively coupled to the intrinsic activation sensing circuit and the crosstalk sensing circuit, the computing device configured to classify a signal of interest as one of an intrinsic activation signal and a crosstalk signal based on whether the signal of interest is passed by the intrinsic activation sensing circuit and the crosstalk sensing circuit, wherein to classify a signal of interest, the computing device is configured to classify the signal of interest as a crosstalk signal when the signal of interest is passed by the intrinsic activation sensing circuit and passed by the crosstalk sensing circuit.

7. The CRM device of claim 6 , wherein the CRM device is configured to adjust pacing of a patient's heart based on the classification of the signal of interest.

8. A cardiac rhythm management (CRM) device comprising:
an intrinsic activation sensing circuit configured to pass signals falling within a first passband;
a crosstalk sensing circuit configured to pass signals falling within a second passband, wherein the second passband contains higher frequencies than the first passband; and
a computing device communicatively coupled to the intrinsic activation sensing circuit and the crosstalk sensing circuit, the computing device configured to classify a signal of interest as one of an intrinsic activation signal and a crosstalk signal based on whether the signal of interest is passed by the intrinsic activation sensing circuit and the crosstalk sensing circuit, wherein to classify a signal of interest, the computing device is configured to classify the signal of interest as a crosstalk signal when the signal of interest is not passed by the intrinsic activation sensing circuit and passed by the crosstalk sensing circuit.

9. A cardiac rhythm management (CRM) device comprising:
an intrinsic activation sensing circuit configured to pass signals falling within a first passband;
a crosstalk sensing circuit configured to pass signals falling within a second passband, wherein the second passband contains higher frequencies than the first passband; and
a computing device communicatively coupled to the intrinsic activation sensing circuit and the crosstalk sensing circuit, the computing device configured to classify a signal of interest as one of an intrinsic activation signal and a crosstalk signal based on whether the signal of interest is passed by the intrinsic activation sensing circuit and the crosstalk sensing circuit, further comprising a pair of sensing electrodes communicatively coupled to the intrinsic activation sensing circuit and the crosstalk sensing circuit.

10. The CRM device of claim 9 , wherein the CRM device is configured to adjust pacing of a patient's heart based on the classification of the signal of interest.

11. A method of classifying a signal of interest using a cardiac rhythm management (CRM) device, the method comprising:
receiving the signal of interest at an intrinsic activation sensing circuit configured to pass signals falling within a first passband;
receiving the signal of interest at a crosstalk sensing circuit configured to pass signals falling within a second passband, wherein the second passband contains higher frequencies than the first passband;
determining, using a computing device, whether the signal of interest is passed by the intrinsic activation sensing circuit and the crosstalk sensing circuit; and
classifying the signal of interest as one of an intrinsic activation signal and a crosstalk signal based on the determination, wherein classifying the signal of interest comprises classifying the signal of interest as an intrinsic activation signal when the signal of interest is passed by the intrinsic activation sensing circuit and not passed by the crosstalk sensing circuit.

12. The method of claim 11 , wherein classifying the signal of interest comprises classifying the signal of interest as a crosstalk signal when the signal of interest is passed by the intrinsic activation sensing circuit and passed by the crosstalk sensing circuit.

13. The method of claim 11 , wherein classifying the signal of interest comprises classifying the signal of interest as a crosstalk signal when the signal of interest is not passed by the intrinsic activation sensing circuit and passed by the crosstalk sensing circuit.

14. The method of claim 11 , wherein receiving the signal of interest at a crosstalk sensing circuit comprises receiving the signal of interest at a crosstalk sensing circuit in which the second passband has a lower cutoff frequency greater than or equal to 500 Hz.

15. The method of claim 11 , further comprising pacing a patient's heart based on the classification of the signal of interest.

16. The method of claim 11 , wherein receiving the signal of interest at a crosstalk sensing circuit comprises receiving the signal of interest at a crosstalk sensing circuit in which the second passband has a center frequency equal to approximately 25,000 Hz.

17. A computing device for use in classifying a signal of interest detected by a cardiac rhythm management (CRM) device, the computing device comprising:
a memory device; and
a processor communicatively coupled to the memory device, the processor configured to:
determine whether the signal of interest is passed by an intrinsic activation sensing circuit configured to pass signals falling within a first passband;
determine whether the signal of interest is passed by a crosstalk sensing circuit configured to pass signals falling within a second passband, wherein the second passband contains higher frequencies than the first passband; and
classify the signal of interest as one of an intrinsic activation signal and a crosstalk signal based on whether

Assignees

• Pacesetter Inc

Inventors

• Fishler Matthew G
• Bornzin Gene A
• Persson Benjamin T
• Carroll Kenneth J

Classifications

• A61N1/36507

  controlled by gradient or slope of the heart potential · CPC title

• G16H50/20

  for computer-aided diagnosis, e.g. based on medical expert systems · CPC title

• A61B5/7264 Primary

  Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems · CPC title

• A61B5/04014

  Human Necessities · mapped topic

• A61B5/316

  Modalities, i.e. specific diagnostic methods · CPC title