Systems and methods for wireless power resonators with open core

Patent metadata

Field	Value
Publication number	US-2025023388-A1
Application number	US-202218712491-A
Country	US
Kind code	A1
Filing date	Nov 29, 2022
Priority date	Nov 30, 2021
Publication date	Jan 16, 2025
Grant date	—

Abstract

Resonators for use in a transcutaneous energy transfer system (TETS) are provided. A resonator includes a housing, a magnetic core positioned within the housing, the magnetic core defining an annular groove and a central aperture, a coil element positioned within the annular groove, and at least one layer positioned within the central aperture, the at least one layer comprising a non-magnetic, non-metallic material.

First claim

What is claimed is:

1 . A resonator for use in a transcutaneous energy transfer system (TETS), the resonator comprising:
a housing; a magnetic core positioned within the housing, the magnetic core defining an annular groove and a central aperture; a coil element positioned within the annular groove; and at least one layer positioned within the central aperture, the at least one layer comprising a non-magnetic, non-metallic material.

2 . The resonator of claim 1 , wherein the resonator is a transmit resonator.

3 . The resonator of claim 1 , wherein the at least one layer is fabricated from at least one of aluminum oxide, epoxy, and/or a printed circuit board (PCB) substrate material.

4 . The resonator of claim 1 , wherein the at least one layer comprises a plurality of layers.

5 . The resonator of claim 4 , wherein the plurality of layers comprise a first layer fabricated from a first material and a second layer fabricated from a second, different material

6 . The resonator of claim 4 , wherein the plurality of layers have different thicknesses.

7 . The resonator of claim 4 , wherein at least one layer of the plurality of layers is air.

8 . A wireless power transfer system comprising:
an implantable receive resonator; and an external transmit resonator comprising:
a housing;
a magnetic core positioned within the housing, the magnetic core defining an annular groove and a central aperture;
a coil element positioned within the annular groove; and
at least one layer positioned within the central aperture, the at least one layer comprising a non-magnetic, non-metallic material.

9 . The wireless power transfer system of claim 8 , wherein the at least one layer is fabricated from at least one of aluminum oxide, epoxy, and/or a printed circuit board (PCB) substrate material.

10 . The wireless power transfer system of claim 8 , wherein the at least one layer comprises a plurality of layers.

11 . The wireless power transfer system of claim 10 , wherein the plurality of layers comprise a first layer fabricated from a first material and a second layer fabricated from a second, different material.

12 . The wireless power transfer system of claim 10 , wherein the plurality of layers have different thicknesses.

13 . The wireless power transfer system of claim 10 , wherein at least one layer of the plurality of layers is air.

14 . A method of assembling a resonator for use in a transcutaneous energy transfer system (TETS), the method comprising:
positioning a magnetic core within a housing, the magnetic core defining an annular groove and a central aperture; positioning a coil element positioned within the annular groove; and positioning at least one layer within the central aperture, the at least one layer comprising a non-magnetic, non-metallic material.

15 . The method of claim 14 , wherein the resonator is a transmit resonator.

16 . The method of claim 14 , wherein positioning at least one layer comprises positioning at least one layer fabricated from aluminum oxide.

17 . The method of claim 14 , wherein positioning at least one layer comprises positioning at least one layer fabricated from epoxy and/or a printed circuit board (PCB) substrate material.

18 . The method of claim 14 , wherein positioning at least one layer comprises positioning a plurality of layers.

19 . The resonator of claim 18 , wherein positioning a plurality of layers comprises:
positioning a first layer fabricated from a first material; and positioning a second layer fabricated from a second, different material.

20 . The resonator of claim 18 , wherein positioning a plurality of layers comprises positioning a plurality of layers having different thicknesses.

Assignees

• Tc1 Llc

Inventors

• Hansen John Freddy
• Keen Rachel
• Harjes Daniel I
• Anderson Russell Eugene

Classifications

• H02J2105/46

  Medical devices, medical implants or life supporting devices · CPC title

• H01F41/00

  Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• H02J50/12

  of the resonant type · CPC title

• A61M2205/8243

  by induction · CPC title