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Implanted bone anchored implant fixture and modified abutment serving as an anchor for an external cochlear implant RF coil

IP.com Disclosure Number: IPCOM000219506D
Publication Date: 2012-Jul-04
Document File: 7 page(s) / 7M

Publishing Venue

The IP.com Prior Art Database

Abstract

1. Patients with a magnetic switch/valve shunt need to be able to use a cochlear implant. 2. Some patients cannot have an internal magnet due to multiple MRIs (e.g., NR2 patients and other patients requiring repeated MRI procedures) that use an adhesive metallic disk. Such a disk is applied over the site of their implant’s non-magnet plug, and then the patient must wear a typical magnet external coil that is magnetically attracted to this disk. A method is needed which removes the use of the disks.

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Title 

Implanted bone anchored implant fixture and modified abutment serving as an anchor for an external cochlear implant RF coil

Problems Addressed 

  1. Patients with a magnetic switch/valve shunt need to be able to use a cochlear implant.
  2. Some patients cannot have an internal magnet due to multiple MRIs (e.g., NR2 patients and other patients requiring repeated MRI procedures) that use an adhesive metallic disk. Such a disk is applied over the site of their implant’s non-magnet plug, and then the patient must wear a typical magnet external coil that is magnetically attracted to this disk. A method is needed which removes the use of the disks.

Known Solutions/Approaches

Closest Existing Technologies:

  1. Adhesive disk. Methods to stabilize the external cochlear implant coil have included an adhesive metal disk. One side has an adhesive and is adhered to the patient’s skin (where hair has been shaved off). The external cochlear implant radio frequency (RF) coil then is placed onto the disk. Due to the disk being magnetic and the external cochlear implant RF coil having a magnet inside, the coil remains stabilized over the internal implant’s RF coil location.

Disadvantages:  The disk requires the external cochlear implant RF coil to have a magnet in it. Due to the specific needs of a patient requiring this invention, they cannot have any magnet worn externally.

 

  1. Bone anchored implant osseointegrated fixture/abutment. This component utilizes a small screw-like fixture that once placed into the bone of a patient osseointegrates into the bone, thus providing an anchor for an abutment (or other attachments) to be secured to the fixture. This provides the basis for an osseointegrated external sound stimulation system that utilizes vibration to be delivered efficiently to the patient’s skull, thus stimulating the cochlea.

Disadvantages:  The lack of an external mounting arm that can be secured to a patient’s external cochlear implant RF coil by use of mechanical means rather than magnetic means. It does not have an external arm that can utilize mechanical means to stabilize a patient’s external cochlear implant RF coil.

Novelty Statement

The disclosed invention utilizes an implanted bone anchored implant fixture and modified abutment to serve as an anchor for an external cochlear implant RF coil for patients that cannot have a magnet in their implanted cochlear implant device and/or in their external coil.

Description (Components, Process)

This invention requires several product specialties including:

·       Bone anchored implant/ bone anchored prosthesis components

·       The external RF coil

·       A stabilizing arm between the bone anchored implant/ bone anchored prosthesis fixture/abutment and the external RF coil. This arm needs to have:

­   A bone anchored implant type adapter to snap into the abutment

­   A fairly fixed (yet adjustable) arm, and

­   An attachment to the external RF coil.

The external RF coil end could be attached to a threaded magnet...