Ossicular transducer attachment for an implantable hearing device

• US 6,171,229 B1
• Filed: 08/07/1996
• Issued: 01/09/2001
• Est. Priority Date: 08/07/1996
• Status: Expired due to Term

• Current Assignee: Envoy Medical Corporation, Saint Croix Medical, Inc.
• Original Assignee: St Croix Medical Incorporated
• Inventors: Kroll, Kai, Bushek, Donald J.
• Primary Examiner(s): Gilbert, Samuel G.
• Application Number:
  US08/689,308
• Time in Patent Office: 1,616 Days
• Field of Search: 600/25, 607/136, 607/137, 607/55-57, 181/129, 181/130, 181/135, 181/134, 381/68-69
• US Class Current: 600/25
• CPC Class Codes: H04R 25/606 acting directly on the eardrum, the ossicles or the skull, e.g. mastoid, tooth, maxillary or mandibular bone, or mechanically stimulating the cochlea, e.g. at the oval window

Abstract

An implantable hearing aid transducer is easily mounted within a middle ear region by the force of attraction between two permanent magnets. The transducer is preferably coupled to one of the magnets prior to implantation. The transducer is coupled to the magnet by an adhesive, by a transducer case containing both the magnet and the transducer, or by being encompassed by the magnet.

Claims

1. An apparatus adapted for mounting a transducer forming part of a hearing device to an ossicular element of a human ear by use of adhesive and magnetic fastener means comprising:

a first permanent magnet having adhesive means for attachment of the magnet to an ossicular element;

a second permanent magnet conformed to be spaced apart from and magnetically coupled to said first magnet, thereby cooperating with the first magnet to form a secure compressive magnetic band about the ossicular element; and

a transducer, the transducer being a part of the hearing device, and being attachable to one of said first and said second magnets by one of either adhesive and magnetic fastener means for attaching the transducer, said transducer being hermetically sealed within a case.

2. The apparatus of claim 1, wherein one of said first and said second magnets is integrated with said case of the transducer.

3. The apparatus of claim 1, wherein said adhesive means for attachment is a non-magnetic substance.

4. The apparatus of claim 1, wherein said second permanent magnet comprises a structure configured as a ferro-magnetic lining for the transducer case.

5. An apparatus adapted for mounting a hearing device to an ossicular element of a human ear having a disarticulated ossicular chain, the apparatus comprising:

a first permanent magnet attachable to [said remainder] an ossicular element;

a second magnet conformed to be spaced apart from and magnetically coupled to said first permanent magnet, the first and second magnets thereby forming a secure compressive magnetic band about said remainder ossicular element; and

an auditory vibrations transducer attached to one of said first and said second magnets by one of either adhesive and mechanical fasteners.

6. A hearing aid apparatus including a transducer adapted for mounting to an ossicular chain element within a middle ear, the apparatus comprising:

a first permanent magnet attachable to an ossicular element by adhesive means for attaching the magnet;

a second permanent magnet spaced apart from and magnetically coupled to said first magnet, thereby forming a secure compressive magnetic band about the ossicular element; and

a transducer attachable to one of said first and said second magnets by one of an adhesive and mechanical fasteners.

7. The apparatus of claim 6, wherein said first and said second magnets are structured as mating half rings spaced apart, said first and second magnets being remotely and magnetically coupled to provide a secure compressive magnetic band about the ossicular element.

8. The apparatus of claim 6, wherein the first magnet is U-shaped and is attachable to the ossicular element the adhesive means and wherein the transducer includes the second magnet integrated therewith, spaced apart and magnetically coupled to said U-shaped first magnet.

9. The apparatus of claim 6, wherein one of said first and said second magnets comprises a multiple prong magnet to provide the secure compressive magnetic band about the ossicular element.

10. The apparatus of claim 6, wherein one of said magnets is within a case of the transducer and further defines a notch in the case to further provide the secure magnetic band about the ossicular element.

11. The apparatus of claim 6, wherein the transducer is adapted for coupling to the second permanent magnet and is conformed to be magnetically secured between said first magnet and said second magnet, thereby adapted to be directly disposed against the ossicular element.