Hearing instrument

Patent metadata

Field	Value
Publication number	US-11399244-B2
Application number	US-202017070007-A
Country	US
Kind code	B2
Filing date	Oct 14, 2020
Priority date	Oct 15, 2019
Publication date	Jul 26, 2022
Grant date	Jul 26, 2022

Abstract

A hearing instrument is specified having a rechargeable battery, a charging coil for inductively receiving energy for charging the battery, a transmitter and/or receiver coil electrically separated from the charging coil for inductively transmitting and/or receiving data, and a magnetic core. Both the charging coil and the transmitter and/or receiver coil are wound on the magnetic core.

First claim

The invention claimed is:

1. A hearing instrument, comprising:
a rechargeable battery;
a charging coil for inductively receiving energy for charging said rechargeable battery;
a transmitter and/or receiver coil electrically separated from said charging coil for inductively transmitting and/or receiving data;
a magnetic core on which both said charging coil and said transmitter and/or receiver coil are wound; and
said charging coil and said transmitter and/or receiver coil being wound on said magnetic core in such a way that their coil axes are oriented precisely or approximately orthogonally to one another for substantially precluding a mutual magnetic influence of said coils.

2. The hearing instrument according to claim 1 , wherein:
said magnetic core is configured as a hollow body; and
said battery is disposed in said magnetic core.

3. The hearing instrument according to claim 1 , wherein said magnetic core has a cylindrical form with two parallel end faces, which are opposite one another along an axis, and a circumferential wall which connects said end faces.

4. The hearing instrument according to claim 3 , wherein said magnetic core has a height which is measured along the axis and a width which is measured perpendicular to the axis, and wherein a ratio of the height to the width is between 1:1 and 1:4.

5. The hearing instrument according to claim 3 , wherein one of said transmitter and/or receiver coil or said charging coil is wound around said circumferential wall, so that its coil axis is oriented parallel to the axis of said magnetic core, and wherein the other of said transmitter and/or receiver coil and said charging coil is wound over said end faces and said circumferential wall, so that its coil axis is oriented orthogonally to the axis of said magnetic core.

6. The hearing instrument according to claim 1 , wherein said magnetic core consists of a soft magnetic ferrite material.

7. The hearing instrument according to claim 1 ,
wherein said magnetic core is configured as a hollow body; and
further comprising an electronic component, said battery and/or said electronic component are disposed in said magnetic core.

8. The hearing instrument according to claim 7 , wherein said electronic component is a charging electronic system.

9. The hearing instrument according to claim 3 , wherein said magnetic core has a height which is measured along its axis and a width which is measured perpendicular to its axis, and wherein a ratio of the height to the width is 1:2.5.

10. The hearing instrument according to claim 1 , wherein said magnetic core is configured as a flat cylinder with said transmitter or receiver coil being wound around a circumferential wall of said magnetic core and said charging coil is wound over end faces and said circumferential wall of said magnetic core.

Assignees

• Sivantos Pte Ltd

Inventors

• Schmidt Martin
• Nikles Peter

Classifications

• H02J2105/46

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

• H02J7/70

  characterised by the mechanical construction · CPC title

• H04R25/554 Primary

  using a wireless connection, e.g. between microphone and amplifier or using Tcoils · CPC title

• H04R25/602 Primary

  of batteries · CPC title

• H02J50/10

  using inductive coupling · CPC title