Hearing aid transducer support

• US 6,488,616 B1
• Filed: 04/18/2000
• Issued: 12/03/2002
• Est. Priority Date: 08/07/1996
• Status: Expired due to Fees

• Current Assignee: Envoy Medical Corporation
• Original Assignee: St Croix Medical Incorporated
• Inventors: Kroll, Kai, Bushek, Donald J.
• Primary Examiner(s): Dvorak, Linda C. M.
• Assistant Examiner(s): Ruddy, David M.
• Application Number:
  US09/551,480
• Time in Patent Office: 959 Days
• Field of Search: 600/25, 600/136, 600/137, 600/55, 600/50, 381/681-69, 381/326, 607/136, 607/137
• US Class Current: 600/25
• CPC Class Codes: A61F 2/18 Internal ear or nose parts, e.g. ear-drums implants for middle ear ventilation or drainage A61F11/202
• CPC Class Codes: A61F 2002/183 Ear parts
• 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

A support for input and output transducers of a hearing aid is implanted in the middle ear. The support, which is attached to the mastoid bone, can be a single component or comprise two adjustable components. In one embodiment, an arm extends from the proximal end of the support towards an access hole created behind the outer ear, where the arm is attached for further stability. In another embodiment, the arm extends outside the access hole, where it is mounted subcutaneously to the mastoid bone with a mechanical fastener. The support provides positional adjustability, stability, and is invisible externally.

Claims

1. A support for mounting at least two transducers within a middle ear, the support comprising:

a first mounting portion configured for disposing within the middle ear a first transducer for contacting a first ossicle of the middle ear;

a second mounting portion configured for disposing within the middle ear a second transducer for contacting a second ossicle of the middle ear, the second portion fixedly attached to the first portion; and

an arm for adding stability to the support.

2. A method of configuring an implantable hearing aid for mounting in a patient'"'"'s middle ear, the method comprising the step of:

configuring a support member, the support member including a first mounting portion for disposing within the middle ear a first transducer for contacting a first ossicle of the middle ear and a second mounting portion for disposing within the middle ear a second transducer for contacting a second ossicle of the middle ear, the support member being configured such that the support member can be passed through a surgically created access hole through the patient'"'"'s mastoid and such that the support member can be reconfigured for mounting in the patient'"'"'s middle ear proximate the patient'"'"'s mastoid.

3. A support member for a hearing aid, the hearing aid being at least partially implantable in a patient'"'"'s middle ear proximate the patient'"'"'s ossicular chain the support member comprising:

a fixable component for positioning within the patient'"'"'s middle ear;

a plurality of fixing portions, each fixing portion configured for receiving a transducer; and

a connector for connecting the fixable component to each portion, the support member being conformable to a first position wherein the support may be passed through an external access into the patient'"'"'s middle ear and the support member being further conformable to a second position wherein at least one transducer contacts an auditory element of the patient'"'"'s ossicular chain.

4. The support member of claim 3, in which the fixable component includes a first fixable component and a second fixable component.

5. The support member of claim 4, in which the first fixable component and the second fixable component arc adjustably coupled to each other with a mechanical fastener.

6. The support member of claim 5, in which each of the first fixable component and the second fixable component defies respective first and second slotted openings, the first slotted opening being mutually-aligned with at least a portion of the second slotted opening, the mechanical fastener being adapted to extend through the mutually-aligned slotted openings in the first and second components and the mechanical fastener being proportioned for affixation to a mastoid portion of a temporal bone, such that the first and second components are adjustably coupled to each other.

7. The support system of claim 6, in which the adjustable coupling of the first fixable component and the second fixable component permits slidable positioning of the first component with respect to the second component.

8. The support system of claim 6, in which the adjustable coupling of the first fixable component and the second fixable component permits radial positioning of the first component with respect to at least the mechanical fastener.

9. The support system of claim 5, in which the first fixable component and the second fixable component are adjustably coupled to each other by a pair of slotted opening defined in each of the first and second components, and the mechanical fastener includes a first mechanical fastener and a second mechanical fastener, with the first mechanical fastener extending through the slotted opening in the first component and through the second component, and the second mechanical fastener extending through the slotted opening in the second component and through the first component.

10. The support system of claim 9, in which the adjustable coupling of the first fixable component and the second fixable component allows for slidable positioning of the first fixable component with respect to the second fixable component.

11. The support system of claim 9, in which at least one of the first and second mechanical fasteners extends outwardly and is configured and arranged to be coupled to at least a mastoid portion of a temporal bone.

12. The support system of claim 3, in which the support member further comprises an arm for adding stability to the support.

13. The support system of claim 12, further comprising at least one fastener proportioned for affixing the arm to at least a mastoid portion of a temporal bone.

14. The support system of claim 12, further comprising at least one lip extending radially from the arm for adding stability to the support.

15. The support system of claim 14, further comprising at least one fastener-adapted for affixing the lip to at least a mastoid portion of a temporal bone.

16. The support system of claim 3, further comprising first and second transducers, each transducer being in mechanical communication with one of the fixing portions, at least one of the first and second transducers being an input transducer for receiving mechanical vibrations from an auditory element of the patient'"'"'s ossicular chain and converting the received mechanical vibrations into electrical signals.

17. The support system of claim 16, in which at least one of the first and second transducers is capable of being coupled to at least one of the auditory elements and is an output transducer for receiving electrical signals and converting the received electrical signals into mechanical vibrations.

18. The support system of claim 3, further comprising first and second transducers, each transducer being in mechanical communication with one of the fixing portions, at least one of the first and second transducers being an acoustic microphone for receiving airborne sound vibrations and converting the received vibrations into electrical signals.

19. The support member of claim 3, wherein the connector includes a ball and socket joint.

20. The support member of claim 3, wherein the fixable component is fixable to the patient'"'"'s mastoid.

21. The support member of claim 20, further comprising a mechanical fastener for securing the fixable component to the patient'"'"'s mastoid.

22. The support member of claim 21, in which the mechanical fastener is a screw and in which the fixable component defines a slot accommodating the screw.