Myringopexy type titanium prosthesis
A middle ear prosthesis comprises a one piece disk shaped prosthesis including a generally circular malleable body including a bore. The body engages a tympanic membrane and the bore receives a head of a stapes when implanted in a middle ear. More particularly, the middle ear prosthesis comprises a body comprising an annular head, a collar, and a plurality of radially extending members connecting the head to the collar. The head engages a tympanic membrane and the collar receives a head of a stapes when implanted in a middle ear.
1. A middle ear prosthesis comprising:
a one piece disk shaped prosthesis comprising a generally circular malleable body including a bore, the body for engaging a tympanic membrane and the bore for receiving a head of a stapes when implanted in a middle ear, wherein the body comprises a ring, a hub and spokes connecting the ring to the hub and wherein the hub comprises a tubular hub having opposite arch shaped notches formed in the tubular hub to align with arches of the stapes.
2. The middle ear prosthesis of claim 1 wherein the body has a height of about 0.5 mm.
3. The middle ear prosthesis of claim 1 wherein the body comprises a titanium body.
4. The middle ear prosthesis of claim 1 wherein the body is cannulated on opposite sides of the bore to provide visibility of the stapes during implantation.
5. The middle ear prosthesis of claim 1 wherein the body has a diameter substantially greater than its thickness to provide the disk shape.
6. The middle ear prosthesis of claim 1 wherein the body has a diameter of about 3.0 mm and a thickness of about 0.5 mm.
7. A middle ear prosthesis comprising:
a body comprising an annular head, a collar, and a plurality of radially extending members connecting the head to the collar, the head for engaging a tympanic membrane and the collar for receiving a head of a stapes when implanted in a middle ear, wherein the collar comprises a tubular hub having opposite arch shaped notches formed in the tubular hub to align with arches of the stapes.
8. The middle ear prosthesis of claim 7 wherein the body comprises a titanium body.
9. The middle ear prosthesis of claim 7 wherein the body is cannulated between the radially extending members to provide visibility of the stapes during implantation.
10. The middle ear prosthesis of claim 7 wherein the plurality of radially extending members comprise a pair of aligned, malleable radially extending members to enable the head to be tilted relative to the collar.
11. The middle ear prosthesis of claim 7 wherein diameter of the head is relatively large compared to height of the collar.
12. The middle ear prosthesis of claim 7 wherein an axis of the collar is perpendicular to a plane of the head.
13. The middle ear prosthesis of claim 7 wherein the body has a diameter substantially greater than its thickness.
14. The middle ear prosthesis of claim 7 wherein the body has a diameter of about 3.0 mm and a thickness of about 0.5 mm.
15. The middle ear prosthesis of claim 1 wherein the collar is substantially coplanar with the head.