Signal analysis of movements of a reference electrode of a catheter in a coronary sinus vein

Patent metadata

Field	Value
Publication number	US-12419690-B2
Application number	US-202117404725-A
Country	US
Kind code	B2
Filing date	Aug 17, 2021
Priority date	Oct 22, 2020
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A method is provided. The method is implemented by a device orientation engine being executed by one or more processors. The method includes determining a movement between each electrode group of a catheter to provide movements and determining a total movement of electrodes of the catheter. The method also includes removing a standard component from the movements and the total movement and outputting a movement indication for the catheter based on the movements and the total movement with the standard component.

First claim

What is claimed is:

1. A method comprising:
determining, by a device orientation engine executed by one or more processors, a movement between each electrode group of a plurality of electrodes of a catheter to provide a plurality of movements, each electrode group comprising at least two adjacent electrodes;
determining, by the device orientation engine, a total movement of the plurality of electrodes;
removing, by the device orientation engine, a standard component from the plurality of movements and the total movement after the plurality of movements are determined, the standard component comprising respiration movement and heartbeat movement; and
outputting, by the device orientation engine, a movement indication for the catheter based on the plurality of movements and the total movement with the standard component removed.

2. The method of claim 1 , the device orientation engine utilizing positions per timestamp for electrodes of each electrode group and a reference position as inputs for determining the movement between each electrode group.

3. The method of claim 1 , the movement between each electrode group being determined based on at least a set of two vectors constructed for each electrode group.

4. The method of claim 3 , the movement between each electrode group being determined based on a third vector between the set of two vectors for each electrode group.

5. The method of claim 1 , the total movement being based on an average movement of three median electrode pairs of the plurality of electrodes.

6. The method of claim 5 , the device orientation engine:
determining a median value for each movement between each electrode pair;
selecting three movement measurements nearest to the median value to provide selected measurements; and
determining an average value for the selected measurements to provide the average movement.

7. The method of claim 1 , the movement indication being for every input position compared against a reference position.

8. The method of claim 1 , the movement indication being along an axial insertion axis of the catheter into a coronary sinus.

9. The method of claim 1 , the catheter being a linear catheter.

10. A system comprising:
a memory storing processor executable code for a device orientation engine; and
one or more processors executing the processor executable code to cause the system to:
determine, by the device orientation engine, a movement between each electrode group of a plurality of electrodes of a catheter to provide a plurality of movements, each electrode group comprising at least two adjacent electrodes,
determine, by the device orientation engine, a total movement of the plurality of electrodes,
remove, by the device orientation engine, a standard component from the plurality of movements and the total movement after the plurality of movements are determined, the standard component comprising any of respiration movement and heartbeat movement, and
output, by the device orientation engine, a movement indication for the catheter based on the plurality of movements and the total movement with the standard component removed.

11. The system of claim 10 , the device orientation engine utilizing positions per timestamp for electrodes of each electrode group and a reference position as inputs for determining the movement between each electrode group.

12. The system of claim 10 , the movement between each electrode group being determined based on at least a set of two vectors constructed for each electrode group.

13. The system of claim 12 , the movement between each electrode group being determined based on a third vector between the set of two vectors for each electrode group.

14. The system of claim 10 , the total movement being based on an average movement of three median electrode pairs of the plurality of electrodes.

15. The system of claim 14 , the processor executable code being further executed to cause the system to:
determine a median value for each movement between each electrode pair;
select three movement measurements nearest to the median value to provide selected measurements; and
determine an average value for the selected measurements to provide the average movement.

16. The system of claim 10 , the standard component comprising respiration movement and heartbeat movement.

17. The system of claim 10 , the movement indication being for every input position compared against a reference position.

18. The system of claim 10 , the movement indication being along an axial insertion axis of the catheter into a coronary sinus.

19. The system of claim 10 , the catheter being a linear catheter.

Assignees

• Biosense Webster Israel Ltd

Inventors

• Nakar Elad
• Botzer Lior
• Yarnitsky Jonathan
• Altman Sigal
• Keren Tal Dor Zeev

Classifications

• A61B5/7214

  using signal cancellation, e.g. based on input of two identical physiological sensors spaced apart, or based on two signals derived from the same sensor, for different optical wavelengths · CPC title

• A61B5/113

  occurring during breathing · CPC title

• A61B5/068

  using impedance sensors · CPC title

• A61B2034/2046

  Tracking techniques · CPC title

• A61B5/06

  Devices, other than using radiation, for detecting or locating foreign bodies {; Determining position of diagnostic devices within or on the body of the patient} · CPC title