Method and apparatus for an insulated electromagnetic shield for use in hearing assistance devices
First Claim
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1. An apparatus, comprising:
- a receiver, adapted for use in a hearing aid, the receiver including a conductive housing;
an insulator disposed around at least a portion of the conductive housing of the receiver; and
an envelope configured to conform around at least a portion of the insulator, wherein the envelope extends a length of electrical termination of the receiver,wherein the envelope includes a magnetically shielding material and the insulator is adapted to electrically insulate the envelope from the conductive housing.
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Abstract
The present subject matter of the invention relates generally to the management of electromagnetic fields in hearing assistance devices, such as hearing aids, and in particular to an insulated electromagnetic shield design for hearing assistance devices. The present disclosure includes various embodiments for electromagnetic shielding of a receiver using a magnetic shield that is electrically insulated from the receiver casing and electronics.
67 Citations
22 Claims
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1. An apparatus, comprising:
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a receiver, adapted for use in a hearing aid, the receiver including a conductive housing; an insulator disposed around at least a portion of the conductive housing of the receiver; and an envelope configured to conform around at least a portion of the insulator, wherein the envelope extends a length of electrical termination of the receiver, wherein the envelope includes a magnetically shielding material and the insulator is adapted to electrically insulate the envelope from the conductive housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A hearing aid, comprising:
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a dual-motor receiver, adapted for use in a hearing aid, the receiver including a conductive housing; an insulator disposed around at least a portion of the conductive housing of the receiver; an envelope configured to conform around at least a portion of the insulator, wherein the envelope extends a length of electrical termination of the receiver; and a magnetically sensitive element proximal the envelope of the receiver, wherein the envelope provides a magnetic and electromagnetic shield and the insulator is adapted to electrically insulate the envelope from the conductive housing. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method comprising:
assembling an assembly comprising a receiver with a conductive casing, an insulative element disposed about the conductive casing, and an electromagnetic shield disposed about the insulative element, such that the conductive casing is electrically insulated from the electromagnetic shield, the assembly adapted for use in a hearing aid, wherein the assembly includes an envelope extending a length of electrical termination of the receiver. - View Dependent Claims (22)
Specification