Dual node multiray electrode catheter

Patent metadata

Field	Value
Publication number	US-10517668-B2
Application number	US-201514964301-A
Country	US
Kind code	B2
Filing date	Dec 9, 2015
Priority date	Sep 14, 2015
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

This disclosure is directed to a catheter having a dual node multiray electrode assembly at the distal end of the catheter body. The dual node multiray electrode assembly includes a proximal multiray array with a plurality of spines connected at one end, each spine having at least one ablation electrode, and a distal node. The dual node multiray electrode assembly may have an expanded configuration and a collapsed configuration wherein the spines are arranged generally along a longitudinal axis of the catheter body. The distal node may be configured to be deployed within a vessel and the proximal multiray array may be configured to engage tissue forming an ostium of the vessel with the ablation electrodes. In some embodiments, the relative distance between the proximal multiray array and the distal node is adjustable.

First claim

What is claimed is:

1. A catheter comprising an elongated catheter body having proximal and distal ends and a dual node multiray electrode assembly at the distal end of the catheter body, wherein the dual node multiray electrode assembly comprises a proximal node including a multiray array with a plurality of spines connected at one end, each spine having at least one ablation electrode, and a distal node including a multiray array with a plurality of spines connected at one end, each spine having at least one diagnostic electrode, and wherein the dual node multiray electrode assembly has an expanded configuration and a collapsed configuration wherein the spines of the proximal multiray array are arranged generally along a longitudinal axis of the catheter body and the distal node conforms to the catheter body in the collapsed configuration, the elongated catheter body comprising an inner tubular member slidably disposed within a lumen of an outer tubular member, a proximal end of the inner tubular member being secured to a control handle, the proximal node multiray array being secured to a distal end of the outer tubular member and the distal node being secured to a distal end of the inner tubular member.

2. The catheter of claim 1 , wherein the distal node is configured to be deployed within a vessel in the expanded configuration and wherein the proximal multiray array is configured to engage tissue of an ostium of the vessel with at least one ablation electrode in the expanded configuration.

3. The catheter of claim 1 , wherein relative longitudinal movement of the inner tubular member and the outer tubular member adjusts a distance between the proximal multiray array and the distal node.

4. The catheter of claim 1 , wherein each spine of the proximal multiray array comprises a plurality of independently controlled ablation electrodes.

5. The catheter of claim 1 , wherein each spine of the distal multiray array comprises a plurality of independently controlled diagnostic electrodes.

6. The catheter of claim 1 , wherein the spines of the proximal multiray array curve radially outward in the expanded configuration.

7. The catheter of claim 6 , wherein the spines of the proximal multiray array curve proximally.

8. The catheter of claim 6 , wherein the spines of the proximal multiray array curve distally.

9. The catheter of claim 6 , wherein the spines of the distal multiray array curve radially outward in the expanded configuration.

10. The catheter of claim 9 , wherein the spines of the distal multiray array curve proximally.

11. The catheter of claim 9 , wherein the spines of the distal multiray array curve distally.

12. The catheter of claim 9 , wherein the spines of the proximal multiray array and the distal multiray array curve in a same direction.

13. The catheter of claim 9 , wherein the spines of the proximal multiray array and the distal multiray array curve in opposite directions.

14. The catheter of claim 1 , wherein the distal multiray comprises a basket-shaped electrode assembly.

15. A method for treatment comprising:
providing a catheter with an elongated catheter body having proximal and distal ends and a dual node multiray electrode assembly at the distal end of the catheter body, wherein the dual node multiray electrode assembly comprises a proximal node including a multiray array with a plurality of spines connected at one end, each spine having at least one ablation electrode, and a distal node including a multiray array with a plurality of spines connected at one end, each spine having at least one diagnostic electrode, and wherein the dual node multiray electrode assembly has an expanded configuration and a collapsed configuration wherein the spines of the proximal multiray array are arranged generally along a longitudinal axis of the catheter body and the distal node conforms to the catheter body in the collapsed configuration, the elongated catheter body comprising an inner tubular member slidably disposed within a lumen of an outer tubular member, a proximal end of the inner tubular member being secured to a control handle, the proximal node multiray array being secured to a distal end of the outer tubular member and the distal node being secured to a distal end of the inner tubular member;
positioning the distal end of the catheter at a desired region of the heart;
deploying the distal mulitray array within a vessel in the expanded configuration to engage an inner diameter of the vessel; and
positioning the proximal multiray array to bring at least one ablation electrode into contact with tissue forming an ostium of the vessel.

16. The method of claim 15 , further comprising recording electrical data received from the at least one diagnostic electrode in contact with the vessel.

17. The method of claim 15 , further comprising delivering radio frequency energy to the at least one ablation electrode to form a lesion.

18. The method of claim 17 , further comprising forming lesions with the at least one ablation electrode, the lesions being formed in a circumferential path around the ostium of the vessel.

19. The method of claim 15 , further comprising adjusting a relative distance between the proximal multiray array and the distal node.

20. The method of claim 19 , wherein adjusting the relative distance between the proximal multiray array and the distal node comprises anchoring the distal node within the vessel and advancing the proximal multiray array towards the distal node to bring the at least one ablation electrode into contact with tissue of the ostium.

Assignees

• Biosense Webster Israel Ltd
• Boisense Webster Israel Ltd

Inventors

• Hoitink Ryan
• Ashton John Hardy
• Clark Jeffrey L
• Solis Mario A
• Basu Shubhayu

Classifications

• A61B2018/00839

  Bioelectrical parameters, e.g. ECG, EEG · CPC title

• A61B2017/00867

  shape memory effect · CPC title

• A61B2017/00053

  Mapping · CPC title

• A61B5/6858

  with a distal basket, e.g. expandable basket · CPC title

• A61B2018/00267

  having a basket shaped structure · CPC title