Apparatus and method for intra-cardiac mapping and ablation

Patent metadata

Field	Value
Publication number	US-10820941-B2
Application number	US-201715725662-A
Country	US
Kind code	B2
Filing date	Oct 5, 2017
Priority date	Jun 28, 2006
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

An intra-cardiac mapping system is based on locating the ports through which blood flows in or out the heart chambers. For many procedures, such as ablation to cure atrial fibrillation, locating the pulmonary veins and the mitral valve accurately allows to perform a Maze procedure. The location of the ports and valves is based on using the convective cooling effect of the blood flow. The mapping can be performed by a catheter-deployed expandable net or a scanning catheter. The same net or catheter can also perform the ablation procedure.

First claim

What is claimed is:

1. A method executed by a control computer, the method comprising:
the control computer causing a display console to display a plurality of tissue-ablation-pattern elements in a distribution, the plurality of tissue-ablation-pattern elements respectively corresponding to a plurality of ablation elements configured to ablate tissue;
the control computer receiving user-input indicating user-selection of some, but not all, of the displayed tissue-ablation-pattern elements as a tissue ablation pattern, the user-selected tissue-ablation-pattern elements comprising a first set of tissue-ablation-pattern elements respectively corresponding to a first set of ablation elements of the plurality of ablation elements; and
the control computer causing the display console to display a representation of the tissue ablation pattern at least in response to the user-input in a manner that distinguishes the user-selected tissue-ablation-pattern elements from others of the tissue-ablation-pattern elements that are not user-selected as part of the tissue ablation pattern, the displayed representation of the tissue ablation pattern displaying the first set of tissue-ablation-pattern elements along a first circumferential path around at least a displayed representation of a first tissue port, wherein the first circumferential path includes a portion that extends radially inward.

2. The method of claim 1 , wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least a first tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements positioned closer to the displayed representation of the first tissue port than at least a second tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements.

3. The method of claim 1 , wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least the first set of tissue-ablation-pattern elements as comprising a first particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements positioned radially inward from at least (a) a second particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements, and (b) a third particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements, and wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least the first particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements positioned between at least the second particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements and the third particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements.

4. The method of claim 3 , wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least the user-selected tissue-ablation-pattern elements and the others of the tissue-ablation-pattern elements that are not user-selected as part of the tissue ablation pattern in a plurality of rows and a plurality of columns, and wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least the first particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements in a first row of the plurality of rows and at least the second particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements and the third particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements in a second row of the plurality of rows.

5. The method of claim 4 , wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least a fourth particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements in a first column of the plurality of columns, and wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least the fourth particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements positioned adjacent the first particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements.

6. The method of claim 5 , wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least a fifth particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements in a second column of the plurality of columns, and wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least the fifth particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements positioned adjacent the first particular tissue-ablation-pattern element in the first set of tissue-ablation-pattern elements.

7. The method of claim 1 , wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least the user-selected tissue-ablation-pattern elements in a plurality of rows and columns, and wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least some of the first set of tissue-ablation-pattern elements positioned in various ones of the rows and columns in a step-like configuration.

8. The method of claim 1 , wherein the displayed representation of the tissue ablation pattern that is displayed at least in response to the user-input displays at least the first set of tissue-ablation-pattern elements along the first circumferential path around at least the displayed representation of the first tissue port and a displayed representation of a second tissue port.

9. The method of claim 1 , wherein the first circumferential path forms a first loop surrounding a first group of tissue-ablation-pattern elements of the plurality of tissue-ablation-pattern elements, the first group of tissue-ablation-pattern elements including only interior tissue-ablation-pattern elements, and wherein exterior tissue-ablation-pattern elements surround the interior tissue-ablation-pattern elements.

10. The method of claim 9 , wherein the first group of tissue-ablation-pattern elements comprises at least one of the user-selected tissue-ablation-pattern elements and at least one of the others of the tissue-ablation-pattern elements that are not user-selected as part of the tissue ablation pattern.

11. The method of claim 1 , further comprising:
the control computer acquiring information from each element of at least some of a plurality of elements operably coupled to the control computer, the plurality of elements configured to be positionable in a tissue cavity; and
the control computer causing the display console to display, based at least on the information acquired from each element of the at least some of the plurality of elements, at least a portion of a map,
wherein the display of the tissue ablation pattern occurs within the at least the portion of the map.

12. The method of claim 11 , wherein the at least the portion of the map depicts a surface of a wall of the tissue cavity, the depicted surface interrupted by at least the displayed representation of th

Assignees

• Kardium Inc

Inventors

• Gelbart Daniel
• Lichtenstein Samuel Victor

Classifications

• A61B2018/00642

  with feedback, i.e. closed loop control · CPC title

• A61B18/10

  Power sources therefor · CPC title

• A61B18/1492 Primary

  having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence) · CPC title

• A61B2018/00791

  Temperature · CPC title

• A61B2018/1407

  Loop · CPC title