Electrode assembly for catheter system including interlinked struts

• US 10,420,604 B2
• Filed: 09/30/2014
• Issued: 09/24/2019
• Est. Priority Date: 10/28/2013
• Status: Active Grant

• Current Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories)
• Original Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories)
• Inventors: Willard, Steven Nicholas
• Primary Examiner(s): Fowler, Daniel W
• Assistant Examiner(s): Demie, Tigist S
• Application Number:
  US14/501,574
• Publication Number:
  US 20150119876A1
• Time in Patent Office: 1,820 Days
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2018/00267 having a basket shaped structure
• CPC Class Codes: A61B 2018/00351 Heart
• CPC Class Codes: A61B 2018/00404 Blood vessels other than those in or around the heart
• CPC Class Codes: A61B 2018/00434 Neural system
• CPC Class Codes: A61B 2018/00511 Kidney
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/1467 using more than two electrodes on a single probe
• CPC Class Codes: A61N 1/0514 Electrodes for the urinary tract
• CPC Class Codes: Y10T 29/49208 by assembling plural parts

Abstract

The present disclosure provides ablation catheter systems and electrode assemblies and electrode baskets for use in the ablation catheter systems that include an interlinked diamond configuration formed from a plurality of strut assemblies. Each strut assembly includes one or more struts that are manufactured from a thermoplastic or metallic material. The interlinked diamond configuration facilitates reducing an overall length of the electrode assembly. Further, the interlinked diamond configuration facilitates expanding and contracting the struts simultaneously and by the same amount.

Claims

1. An electrode assembly for an ablation catheter system, the electrode assembly comprising:

a first strut assembly comprising a first distal end and a first proximal end; and

a second strut assembly comprising a second distal end and a second proximal end, wherein the second distal end is positioned between the first distal end and the first proximal end such that the first and second strut assemblies form an interlinked configuration, wherein the first distal end is melted to the second distal end, and wherein the first proximal end is positioned between the second distal end and the second proximal end, and wherein the first proximal end is melted to the second proximal end such that the first and second strut assemblies are configured to expand and contract simultaneously.

2. The electrode assembly of claim 1 wherein the first strut assembly is configured to expand and contract in a first plane, and wherein the second strut assembly is configured to expand and contract in a second plane different than the first plane.

3. The electrode assembly of claim 1 wherein at least one of the first and second strut assemblies is manufactured from a thermoplastic material.

4. The electrode assembly of claim 1 wherein the first strut assembly comprises a first strut and a second strut each extending between the first distal end and the first proximal end, and wherein the second strut assembly comprises a third strut and a fourth strut each extending between the second distal end and the second proximal end.

5. The electrode assembly of claim 4 wherein each of the first, second, third, and fourth struts include at least one electrode.

6. The electrode assembly of claim 1 further comprising a pull wire.

7. An ablation catheter system comprising:

a handle;

an elongate shaft extending from the handle; and

an electrode assembly carried by the shaft and having a longitudinal axis, a proximal end and a distal end, the electrode assembly comprising;

a first strut assembly comprising a first distal end and a first proximal end; and

a second strut assembly comprising a second distal end and a second proximal end, wherein the second distal end is positioned between the first distal end and the first proximal end such that the first and second strut assemblies form an interlinked configuration, wherein the first distal end is melted to the second distal end, and wherein the first proximal end is positioned between the second distal end and the second proximal end, and wherein the first proximal end is melted to the second proximal end such that the first and second strut assemblies are configured to expand and contract simultaneously.

8. The ablation catheter system of claim 7 wherein the first strut assembly is configured to expand and contract in a first plane, and wherein the second strut assembly is configured to expand and contract is a second plane different than the first plane.

9. The ablation catheter system of claim 7 wherein at least one of the first and second strut assemblies is manufactured from a thermoplastic material.

10. The ablation catheter system of claim 7 wherein the first strut assembly comprises a first strut and a second strut each extending between the first distal end and the first proximal end, and wherein the second strut assembly comprises a third strut and a fourth strut each extending between the second distal end and the second proximal end.

11. The ablation catheter system of claim 7 wherein each of the first, second, third, and fourth struts include at least one electrode.

12. The ablation catheter system of claim 7 further comprising a guide wire.