Shielded twisted pair of conductors using conductive ink

• US 10,433,747 B2
• Filed: 10/04/2018
• Issued: 10/08/2019
• Est. Priority Date: 01/29/2013
• Status: Active Grant

• Current Assignee: St. Jude Medical International Holding SARL (Abbott Laboratories Incorporated)
• Original Assignee: St. Jude Medical International Holding SARL (Abbott Laboratories Incorporated)
• Inventors: Sobe, Lior
• Primary Examiner(s): Ngo, Hung V
• Application Number:
  US16/151,593
• Publication Number:
  US 20190038162A1
• Time in Patent Office: 369 Days
• CPC Class Codes: A61B 2562/0223 Magnetic field sensors
• CPC Class Codes: A61B 2562/125 characterised by the manufacture of electrodes
• CPC Class Codes: A61B 2562/182 Electrical shielding, e.g. using a Faraday cage
• CPC Class Codes: A61B 2562/222 Electrical cables or leads therefor, e.g. coaxial cables or ribbon cables
• CPC Class Codes: A61B 2562/227 Sensors with electrical connectors
• CPC Class Codes: A61B 5/062 using magnetic field
• CPC Class Codes: A61B 5/068 using impedance sensors
• CPC Class Codes: A61B 5/287 Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/6847 mounted on an invasive device
• CPC Class Codes: A61B 5/6851 Guide wires
• CPC Class Codes: A61B 5/6852 Catheters
• CPC Class Codes: A61B 6/12 Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61B 6/487 involving fluoroscopy
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing
• CPC Class Codes: H05K 1/0245 Lay-out of balanced signal pairs, e.g. differential lines or twisted lines
• CPC Class Codes: H05K 2201/0715 provided by an outer layer of PCB
• CPC Class Codes: H05K 2201/097 Alternating conductors, e.g. alternating different shaped pads, twisted pairs; Alternating components
• CPC Class Codes: H05K 2203/0548 Masks
• CPC Class Codes: H05K 2203/30 Details of processes not otherwise provided for in H05K2203/01 - H05K2203/17
• CPC Class Codes: H05K 3/4685 : Manufacturing of cross-over conductors
• CPC Class Codes: H05K 9/0073 : Shielding materials H05K9/0003 takes precedence

Abstract

An apparatus for transmitting electrical signals is disclosed. The apparatus includes a substrate and a twisted pair of conductors located on the substrate. The twisted pair of conductors has a first layer comprising conductive material, a second layer comprising nonconductive material, and a third player comprising conductive material. The first layer has a plurality of segments separated by a plurality of gaps. The second layer is positioned in said gaps and electrically insulates a portion of the segments positioned within the gaps. The third layer is positioned over the second layer. The third layer is configured to electrically connects an end of one segment to an end of another segment. The twisted pair of conductors formed by the three dimensional structure comprises two electrically isolated conductors twisted about each other.

Claims

1. An apparatus, comprising:

a first circuit layer and a second, separate circuit layer wherein said first and second circuit layers comprise electrically conductive material;

an insulation layer comprising electrically nonconductive material disposed on said first circuit layer and between said first and second circuit layers;

a lower isolation layer and an upper isolation layer both comprising electrically nonconductive material, said first and second circuit layers being located between said lower and upper isolation layers; and

a shield comprising a lower shield layer and a upper shield layer both comprising electrically conductive material, said first and second circuit layers being located between said lower and upper shield layers.

2. The apparatus of claim 1 wherein said first circuit layer and said second circuit layer are electrically separate.

3. The apparatus of claim 1 wherein said first circuit layer is disposed on said lower isolation layer.

4. The apparatus of claim 3 wherein said insulation layer is disposed on said first circuit layer, said insulation layer being further disposed on said lower isolation layer.

5. The apparatus of claim 1 wherein said lower isolation layer is disposed on said lower shield layer.

6. The apparatus of claim 5 wherein said lower shield layer is disposed on a substrate.

7. The apparatus of claim 6 wherein said substrate is an elongate tubular member of a medical device.

8. The apparatus of claim 7 wherein said first and second circuit layers extend from about a distal end to about a proximal end of said elongate tubular member.

9. The apparatus of claim 6 wherein said substrate is an object attached to a medical device.

10. The apparatus of claim 9 wherein said object is attached to an interior wall of a lumen of said medical device.

11. The apparatus of claim 1 wherein said upper isolation layer and said lower isolation layer surround said first and second circuit layers.

12. The apparatus of claim 11 wherein said upper isolation layer and said lower isolation layer further surrounds said insulation layer.

13. The apparatus of claim 11 wherein said upper shield layer and said lower shield layer surround said upper and lower isolation layers and said first and second circuit layers.

14. The apparatus of claim 1 further comprising a coil, said coil comprising:

a coil layer comprising a length of spirally-wound conductive material, wherein said coil layer comprises one continuous electric circuit having a first end and a second end, said first and second ends of said coil being electrically connected to said first and second circuit layers.

15. The apparatus of claim 14 further comprising a core of magnetically-permeable material, said coil layer extending through a path spiraling around said core.

16. The apparatus of claim 1 wherein said first circuit layer and said second circuit layer have respective cross-sectional widths that are about the same.

17. The apparatus of claim 16 wherein said first circuit layer and said second circuit layer have respective cross-sectional thicknesses that are about the same.

18. The apparatus of claim 1 wherein said second circuit layer is disposed between said first circuit layer and said upper isolation layer.

19. An apparatus, comprising:

a substrate;

a first circuit layer and a second, electrically separate circuit layer wherein said first and second circuit layers comprise electrically conductive material;

an insulation layer comprising electrically nonconductive material disposed on said first circuit layer and between said first and second circuit layers;

a lower isolation layer and an upper isolation layer both comprising electrically nonconductive material, said first and second circuit layers being located between said lower and upper isolation layers; and

a shield comprising a lower shield layer and a upper shield layer both comprising electrically conductive material, said first and second circuit layers being located between said lower and upper shield layers, said lower shield layer being disposed on said substrate;

wherein respective cross-sectional areas of said first circuit layer and said second circuit layer are about the same.