Multiplexing of high count electrode catheter(s)

Patent metadata

Field	Value
Publication number	US-10912484-B2
Application number	US-201816030358-A
Country	US
Kind code	B2
Filing date	Jul 9, 2018
Priority date	Jul 9, 2018
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

A method is disclosed comprising: performing a first scan of an organ using a set of electrodes in a catheter that are currently active; deactivating one or more of the electrodes in the set based on data that is collected as a result of the first scan; tuning the set by at least one of (i) deactivating one or more electrodes in the set that remain active after the deactivating, and (ii) activating one or more electrodes in the catheter that are inactive; performing a second scan of the organ using electrodes in the set that are currently active after the tuning is performed, and generating a map of the organ based on data collected as a result of the second scan; and outputting the map of the organ for presentation to a user.

First claim

What is claimed is:

1. A method comprising:
providing an output device configured to output a map of a heart;
providing at least one processor operatively coupled to the output device;
providing a memory configured to store a data structure configured to identify a list of electrodes that are currently active or inactive;
providing an intracardiac catheter configured for intracardiac ablations and intracardiac mapping;
performing a first scan of the heart using a set of electrodes in the catheter that are currently active;
deactivating one or more of the electrodes in the set based on data that is collected as a result of the first scan;
detecting an electrical activation in the heart that falls within a criteria for a focal or rotational activation pattern;
identifying a region of interest in the heart having the detected electrical activation;
calculating an activation index for the region of interest, the activation index comprising a predetermined range for a number of heart beats that demonstrates the focal or rotational activation pattern;
tuning the set by at least one of (i) deactivating one or more electrodes associated with the region of interest in the set that remain active after the deactivating, and (ii) activating one or more electrodes associated with the region of interest in the catheter that are inactive;
performing a second scan of the heart using electrodes in the set that are currently active after the tuning is performed, and generating the map of the heart based on data collected as a result of the second scan; and
outputting the map of the heart for presentation to a user,
wherein the at least one processor retrieves the data structure from the memory to determine which of the one or more electrodes in the catheter are currently active;
wherein the at least one processor activates or deactivates the one or more electrodes by modifying the data structure; and
wherein signals from currently active electrodes are used to generate the map while signals from currently inactive electrodes are not used to generate the map.

2. The method of claim 1 , wherein tuning the set further includes:
activating a first electrode in the catheter when activating the first electrode causes the activation index of the region of interest to be increased.

3. The method of claim 2 , further comprising:
detecting an increase in the activation index of the region of interest that results from the first electrode in the catheter being activated; and
activating a second electrode in the catheter based on whether the increase in the activation index is less than a threshold.

4. The method of claim 1 , wherein tuning the set includes deactivating a selected first electrode in the catheter that is associated with a region of interest, the first electrode being selected based on an impact which the first electrode has on performance of the catheter with respect to the region of interest.

5. The method of claim 4 , wherein the first electrode is one that is in direct contact with tissue corresponding to the region of interest or one that is within a predetermined distance from the tissue corresponding to the region of interest.

6. The method of claim 1 , wherein the heart is a heart.

7. The method of claim 1 , wherein deactivating the one or more of the electrodes in the set based on data that is collected as a result of the first scan includes deactivating one or more electrodes that are not in physical contact with tissue of the heart that is part of one or more regions of interest in the heart.

8. The method of claim 1 , wherein deactivating the one or more of the electrodes in the set based on data that is collected as a result of the first scan includes deactivating one or more electrodes that are associated with one or more non-conductive regions of the heart.

9. The method of claim 1 , wherein tuning the set includes reducing the set by deactivating one or more electrodes in the catheter that are currently active based on a wave property of a region of interest in the heart, the wave property including velocity of propagation of action potential impulses across the region of interest.

10. The method of claim 1 , wherein tuning the set includes reducing the set by deactivating one or more electrodes in the intracardiac catheter that are currently active based on a wave property of a region of interest in the heart, the wave property including direction of propagation of action potential impulses across the region of interest.

11. A diagnostic device, comprising:
an intracardiac catheter configured for intracardiac ablations and intracardiac mapping;
an output device;
a memory configured to store a data structure identifying a list of electrodes that are currently active or inactive; and
at least one processor operatively coupled to the output device, the at least one processor being configured to:
perform a first scan of a heart using a set of electrodes in the catheter that are currently active;
deactivate one or more of the electrodes in the set based on data that is collected as a result of the first scan;
detect an electrical activation in the heart that falls within a criteria for a focal or rotational activation pattern;
identify a region of interest in the heart having the detected electrical activation;
calculate an activation index for the region of interest, the activation index comprising a predetermined range for a number of heart beats that demonstrates the focal or rotational activation pattern;
tune the set by at least one of (i) deactivating one or more electrodes associated with the region of interest in the set that remain active after the deactivating, and (ii) activating one or more electrodes associated with the region of interest in the catheter that are inactive;
perform a second scan of the heart using electrodes in the set that are currently active after the tuning is performed, and generating a map of the heart based on data collected as a result of the second scan; and
output the map of the heart using the output device,
wherein the at least one processor retrieves the data structure from the memory to determine which of the one or more electrodes in the catheter are currently active;
wherein the at least one processor activates or deactivates the one or more electrodes by modifying the data structure; and
wherein signals from currently active electrodes are used to generate the map while signals from currently inactive electrodes are not used to generate the map.

12. The diagnostic device of claim 11 , wherein tuning the set includes:
activating a first electrode in the catheter when activating the first electrode causes the activation index of the region of interest to be increased.

13. The diagnostic device of claim 12 , further comprising:
detecting an increase in the activation index of the region of interest that results from the first electrode in the catheter being activated; and
activating a second electrode in the catheter based on whether the increase in the activation index is less than a threshold.

14. The diagnostic device of claim 11 , wherein tuning the set includes deactivating a selected first electrode in the catheter that is associated with a region of interest, the first electrode being selected based on an impact which the first electrode has on performance of the catheter with respect to the region of interest.

15. The diagnostic device of claim 14 , wherein the first electrode is one that is in direct contact with tissue corresponding to the region of interest or one that is within a predetermined distance from the tissue c

Assignees

• Biosense Webster Israel Ltd

Inventors

• Ziv-Ari Morris
• Benaroya Yoav
• Urman Roy
• Baron Oded

Classifications

• G01N27/07

  Construction of measuring vessels; Electrodes therefor · CPC title

• A61B5/6859

  with multiple distal splines · CPC title

• A61B5/6844

  Monitoring or controlling distance between sensor and tissue · CPC title

• A61B5/0536 Primary

  Impedance imaging, e.g. by tomography · CPC title

• A61B2018/00351

  Heart · CPC title