Electrode-electrical conductor system for a medical device

Patent metadata

Field	Value
Publication number	US-12220573-B2
Application number	US-202117514505-A
Country	US
Kind code	B2
Filing date	Oct 29, 2021
Priority date	Oct 29, 2020
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

One aspect relates to an electrode-electrical conductor system for a medical device. The system includes one or more electrically insulated wire(s) or cable(s) wherein. The electrical insulation includes electrical conductor one or more partial opening(s), which is/are arranged on one side of the wire(s) or cable(s), and one or more electrode(s), which is/are mechanically and electrically connected to the wire(s) or cable(s) via the one or more partial opening(s) arranged on one side of the wire(s) or cable(s). The mechanical and electrical connections are made by welding, pressing, swaging, adhesives, brazing, soldering and/or dimples. One aspect also relates to a method for preparing such an electrode-electrical conductor system.

First claim

The invention claimed is:

1. An electrode-electrical conductor system for a medical device comprising:
a) at least one electrical conductor comprising one or more wire(s) or cable(s) covered by electrical insulation, wherein the electrical insulation comprises one or more partial opening(s), which is/are arranged on one side of the wire(s) or cable(s), and
b) one or more electrode(s), which is/are mechanically and electrically connected to the wire(s) or cable(s) via the one or more partial opening(s) arranged on one side of the wire(s) or cable(s) by at least one of welding, pressing, swaging, adhesives, brazing, soldering and dimples.

2. The electrode-electrical conductor system according to claim 1 , wherein the electrical conductor comprises one or more bundle(s) or strand(s) of electrically insulated wire(s) or cable(s), each of the one or more bundle(s) or strand(s) of electrically insulated wire(s) or cable(s) is/are covered by an electrical insulation, which comprises one or more opening(s) arranged on the one or more partial opening(s) on one side of the wire(s) or cable(s).

3. The electrode-electrical conductor system according to claim 1 , wherein the wire(s) or cable(s) of the electrical conductor and/or the at least one electrode comprise(s) one or more of the metals Pt, Ir, Ta, Pd, Ti, Fe, Au, Mo, Nb, W, Ni, Ti, Ag, Cu, or a mixture or alloy thereof or the electrical conductor or the at least one electrode is/are a multilayered material system(s).

4. The electrode-electrical conductor system according to claim 1 , wherein the electrical insulation of the electrical conductor comprises an insulating plastic material selected from the group comprising polyethylene, polyurethane, polyimide, polyamide, PEEK, and fluorinated plastic materials such as ETFE, PTFE, PFA, PVDF, FEP or FPO, and mixtures thereof.

5. The electrode-electrical conductor system according to claim 1 , wherein the wire(s) or cable(s) has/have a thickness in the range from 5 to 250 μm, and the electrical insulation of the wire(s) or cable(s) has/have a thickness in the range from 3 to 150 μm.

6. The electrode-electrical conductor system according to claim 1 , wherein the wire(s) or cable(s) has/have a thickness in the range from 10 to 120 μm, and the electrical insulation of the wire(s) or cable(s) has/have a thickness in the range from 5 to 70 μm.

7. The electrode-electrical conductor system according to claim 1 , wherein the wire(s) or cable(s) within the one or more partial opening(s) is/are mechanically or laser cut such that one or both of the free ends of the cut wire(s) or cable(s) is/are connected to the one or more electrode(s).

8. The electrode-electrical conductor system according to claim 7 , wherein one or both of the free ends of the cut wire(s) or cable(s) is/are pressed or welded.

9. The electrode-electrical conductor system according to claim 1 , wherein the one or more electrode(s) is/are selected from a cubic, rectangular, cylindrical and ring electrode and ring electrode segment.

10. The electrode-electrical conductor system according to claim 1 , wherein the electrical conductor is embedded in a biocompatible polymer substrate selected from the group comprising polyurethane, thermoplastic polyurethane (TPU), silicone, polyimide, phenyltrimethoxysilane (PTMS), polymethylmethacrylate (PMMA), parylene, polyetheretherketone (PEEK), liquid-crystal polymer (LCP), kapton and mixtures thereof, comprising one or more opening(s) arranged on the one or more partial opening(s) on one side of the wire(s) or cable(s).

11. A method for preparing an electrode-electrical conductor system for a medical device according to claim 1 , the method comprising:
a) providing the at least one electrical conductor comprising the one or more wire(s) or cable(s) which is/are surrounded by the electrical insulation,
b) partially opening the electrical insulation of the at least one electrical conductor by laser ablation or mechanical cutting such as to obtain the one or more partial opening(s) on one side of the wire(s) or cable(s), wherein the wire(s) or cable(s) are cut or uncut, and
c) connecting the one or more electrode(s) to the wire(s) or cable(s) of step b) via the one or more partial opening(s) in the electrical insulation of the at least one electrical conductor by welding, pressing, swaging, adhesives, brazing, soldering and/or dimples.

12. The method according to claim 11 , wherein the method further comprises cutting the one or more wire(s) or cable(s) by laser cutting or mechanical cutting to obtain two free ends at the cut of the wire(s) or cable(s) before attaching the one or more electrode(s) to the one or more partial opening(s) of the at least one electrical conductor.

13. The method according to claim 12 , wherein the method further comprises lifting one or both of the free ends relative to the rest of the one or more wire(s) or cable(s) before attaching the one or more electrode(s) to the one or more partial opening(s) of the at least one electrical conductor.

14. The method according to claim 11 , wherein the partial opening of the electrical insulation by laser ablation or mechanical cutting is carried out such that the wire(s) or cable(s) are uncut, and/or the further step of cutting the one or more wire(s) or cable(s) by laser cutting or mechanical cutting is carried out such that the remaining electrical insulation surrounding the wire(s) or cable(s) is uncut.

15. The method according to claim 12 , wherein the method further comprises pressing or welding one or both of the free ends, preferably both of the free ends.

16. The method according to claim 11 , wherein step b) further comprises opening a polymer substrate in which the electrical conductor is embedded by laser ablation or mechanical cutting.

Assignees

• Heraeus Deutschland Gmbh & Co Kg

Inventors

• Jung Markus
• Kaiser Thorsten

Classifications

• H01R4/029

  Welded connections (H01R4/021 - H01R4/028 take precedence) · CPC title

• H01R4/026

  comprising means for eliminating an insulative layer prior to soldering or welding · CPC title

• A61N1/05

  for implantation or insertion into the body, e.g. heart electrode (A61N1/06 takes precedence) · CPC title

• A61N1/056 Primary

  Transvascular endocardial electrode systems · CPC title

• A61N1/048 Primary

  Electrodes characterised by a specific connection between lead and electrode · CPC title