Valve view map

Patent metadata

Field	Value
Publication number	US-9980653-B2
Application number	US-201313886376-A
Country	US
Kind code	B2
Filing date	May 3, 2013
Priority date	May 3, 2013
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

A method, including generating a three-dimensional (3D) map as a plurality of points illustrating a characteristic of a 3D heart chamber, the 3D heart chamber having an opening bounded by a perimeter. The method further includes transforming the perimeter into a closed two-dimensional (2D) figure having an interior. The plurality of points illustrating the characteristic are projected onto the interior of the 2D figure so as to generate a 2D map of the characteristic of the 3D heart chamber.

First claim

We claim:

1. A method, comprising:
inserting a distal end of a catheter into a three-dimensional (3D) heart chamber, wherein the distal end of the catheter comprises at least one sensor;
measuring a characteristic of the heart chamber with the at least one sensor;
integrating the measured characteristic with a location of the distal end of the catheter to create a plurality of points;
generating a 3D mesh from the plurality of points, the 3D mesh formed from a plurality of line segments and junctions having a connectivity, the 3D mesh including an opening defined by a closed perimeter, the opening in the 3D mesh corresponding to an anatomical opening in a heart;
generating a 3D map from the 3D mesh, the 3D map illustrating the characteristic, measured by the catheter, of a 3D heart chamber, the 3D map including an opening corresponding to the opening in the 3D mesh, the opening in the 3D map having the same perimeter as the perimeter of the corresponding opening in the 3D mesh;
generating a two-dimensional (2D) mesh by mapping each point on the perimeter of the opening on the 3D mesh to a corresponding point on a 2D closed boundary, the 2D closed boundary having a perimeter corresponding to the perimeter of the corresponding opening on the 3D mesh, the 2D boundary being larger than the corresponding opening on the 3D mesh;
mapping each of the line segments and junctions of the 3D mesh into an interior of the 2D boundary of the 2D mesh while maintaining the connectivity of the 3D mesh in the 2D mesh; and
generating, from the 2D mesh, a 2D map corresponding to the boundary and interior of the 2D mesh so as to generate a 2D map of the characteristic of the 3D heart chamber.

2. The method according to claim 1 , wherein the heart chamber comprises a left atrium of a heart.

3. The method according to claim 2 , wherein the anatomical opening comprises an open mitral valve of the heart.

4. The method according to claim 2 , wherein the anatomical opening comprises a pulmonary vein opening to the left atrium.

5. The method according to claim 1 , wherein the characteristic comprises one of a local activation time (LAT) of the heart chamber, a force acting on the heart chamber, and a temperature of the heart chamber.

6. The method according to claim 1 , wherein the 2D closed boundary comprises a circle.

7. The method according to claim 1 , wherein the 2D map defines a plane, and wherein the 2D map is rotatable about a line in the plane so as to present a perspective view of the 2D map, and wherein a first region in contact with a first side of the plane corresponds to an interior region of the 3D heart chamber, and a second region in contact with a second side of the plane corresponds to an exterior region of the 3D heart chamber.

8. The method according to claim 7 , wherein a distal end of a catheter is located in the interior region at a distance and having an orientation with respect to the 3D heart chamber, and wherein an icon representative of the distance and the orientation is positioned in the first region with respect to the plane.

9. The method according to claim 7 , wherein the 3D heart chamber comprises a left atrium, and wherein a pulmonary vein connects to the exterior region of the left atrium via a vein opening, the method further comprising generating in the 2D map an indication of the vein opening, and positioning in the second region a representation of the pulmonary vein connected to the indication.

10. The method according to claim 9 , wherein a distal end of a catheter is located within the pulmonary vein, and wherein an icon representative of a distance and a location of the distal end is positioned within the second region.

11. The method according to claim 1 , and comprising incorporating an indication of respective tissue thicknesses of elements of the heart chamber into the 2D map.

12. An apparatus, comprising:
a processor; and
a non-transitory computer readable medium storing a plurality of instructions, which when executed, cause the processor to:
integrate a measured characteristic of a three dimensional (3D) heart chamber having an anatomical opening, the characteristic being measured by a distal end of a catheter inserted into the 3D heart chamber, the distal end having at least one sensor,
generate a 3D mesh from the plurality of points, the 3D mesh formed from a plurality of line segments and junctions having a connectivity, the 3D mesh including an opening defined by a closed perimeter, the opening in the 3D mesh corresponding to the anatomical opening in a heart;
generate a 3D map from the 3D mesh, the 3D map illustrating the characteristic, measured by the distal end of the catheter in the 3D heart chamber, the 3D map including an opening corresponding to the opening in the 3D mesh, the opening in the 3D map having the same perimeter as the perimeter of the corresponding opening in the 3D mesh;
generate a two-dimensional (2D) mesh by mapping each point on the perimeter of the opening on the 3D mesh to a corresponding point on a 2D closed, the 2D closed boundary having a perimeter corresponding to the perimeter of the corresponding opening on the 3D mesh, the 2D boundary being larger than the corresponding opening on the 3D mesh; and
map each of the line segments and junctions of the 3D mesh into an interior of the 2D boundary of the 2D mesh while maintaining the connectivity of the 3D mesh in the 2D mesh; and
generate, from the 2D mesh, a 2D map corresponding to the boundary and interior of the 2D mesh so as to generate a 2D map of the characteristic of the 3D heart chamber.

13. The apparatus according to claim 12 , wherein the heart chamber comprises a left atrium of a heart.

14. The apparatus according to claim 13 , wherein the anatomical opening comprises an open mitral valve of the heart.

15. The apparatus according to claim 13 , wherein the anatomical opening comprises a pulmonary vein opening to the left atrium.

16. The apparatus according to claim 12 , wherein the characteristic comprises one of a local activation time (LAT) of the heart chamber, a force acting on the heart chamber, and a temperature of the heart chamber.

17. The apparatus according to claim 12 , wherein the 2D closed boundary comprises a circle.

18. The apparatus according to claim 12 , wherein the 2D map defines a plane, and wherein the 2D map is rotatable about a line in the plane so as to present a perspective view of the 2D map when displayed on the screen and wherein a first region in contact with a first side of the plane corresponds to an interior region of the 3D heart chamber.

19. The apparatus according to claim 18 , wherein a distal end of a catheter is located in the interior region at a distance and having an orientation with respect to the 3D heart chamber, and wherein an icon representative of the distance and the orientation is positioned in the first region with respect to the plane.

20. The apparatus according to claim 18 , wherein the 3D heart chamber comprises a left atrium, and wherein a pulmonary vein connects to the exterior region of the left atrium via a vein opening, the method further comprising generating in the 2D map an indication of the vein opening, and positioning in the second region a representation of the pulmonary vein connected to the indication.

21. The apparatus according to claim 20 , wherein a distal end of a catheter is located within the pulmonary vein, and wherein an icon representative of a distance and a location of the distal end is positioned

Assignees

• Biosense Webster Israel Ltd

Inventors

• Lichtenstein Yoav
• Massarwa Fady

Classifications

• G06T11/26 Primary

  Drawing of charts or graphs · CPC title

• G06T19/00

  Manipulating three-dimensional [3D] models or images for computer graphics · CPC title

• G06T2210/41

  Medical · CPC title

• A61B5/02 Primary

  Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow · CPC title

• G06T11/206

  Physics · mapped topic