Passive hearing implant
A middle ear implant system includes a disc-shape vibration surface that is configured for implantation within skin lying over skull bone of a patient, with the disc-shape vibration surface parallel to an outer surface of the skin and to the skull bone so that sound vibrations striking the outer surface of the skin create corresponding vibrations in the disc-shape vibration surface within the skin. A rigid ossicle connector has a proximal end connected to the disc-shape vibration surface and a distal end connected to an ossicle in the middle ear of the patient so that vibrations of the disc-shape vibration surface are mechanically coupled to the ossicle for perception by the patient as sound.
1. A middle ear implant system comprising:
a disc-shape vibration surface configured for implantation in skin lying over a skull bone of a patient, with the disc-shape vibration surface parallel to an outer surface of the skin and to the skull bone, the disc-shape vibration surface configured to allow sound vibrations that strike the outer surface of the skin to create corresponding vibrations in the disc-shape vibration surface in the skin; and
a rigid ossicle connector having a proximal end mechanically coupled to the disc-shape vibration surface and a distal end configured to connect to an ossicle in the middle ear of the patient, the rigid ossicle connector configured to allow vibrations of the disc-shape vibration surface to be mechanically coupled to the ossicle for perception by the patient as sound.
2. The system according to claim 1 , wherein the disc-shape vibration surface is a mesh screen.
3. The system according to claim 2 , wherein the mesh screen is made of titanium.
4. The system according to claim 1 , wherein the ossicle connector has an adjustable length between the proximal end and the distal end.
5. The system according to claim 1 , wherein the ossicle connector is made of titanium.
6. The system according to claim 1 , further comprising:
an external active vibration component configured to attach to the outer surface of the skin and configured to generate the sound vibrations.
7. The system according to claim 6 , wherein one of the disc-shape vibration surface and the external active vibration component includes a permanent magnet and the other includes a magnetic material configured to magnetically cooperate with the disc-shape vibration surface to couple the sound vibrations through the skin to the disc-shape vibration surface.
8. The system according to claim 6 , wherein the external active vibration component includes an attachment surface configured for adhesive attachment to the outer surface of the skin to fixedly secure the external active vibration component to the outer surface of the skin.
9. The system according to claim 6 , further comprising:
an implant magnet configured to fixedly attach to the skull bone; and
an external holding magnet contained within the external active vibration component, wherein the implant magnet and the external holding magnet are configured to magnetically cooperate to fixedly secure the external active vibration component on the outer surface of the skin.
10. The system of claim 1 , wherein the ossicle connector is configured to pass through a surgically created tunnel in the skull bone.
11. The system according to claim 1 , wherein the distal end of the ossicle connector is configured to connect to the ossicle so as to preserve a normal hearing pathway from the tympanic membrane of the patient.
12. The system of claim 1 , wherein the disc-shape vibration surface has a rectangular shape or a circular shape.
13. The system of claim 1 , wherein the ossicle connector includes a magnetic coupling including a first holding magnet connected with the proximal end and a second holding magnet connected with the distal end to releasably connect the proximal end with the distal end of the ossicle connector.
14. The system of claim 1 , wherein the ossicle connector includes an adjustment mechanism configured to allow a length of the ossicle connector to be adjusted when implanting the middle ear implant system.
15. The system of claim 1 , further comprising an elastic layer connected to the disc-shape vibration surface and configured to fixedly attach to the skull bone.