Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Ear or nose prosthesis
Patent
1985-01-29
1986-07-22
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Ear or nose prosthesis
128 92C, A61F 218
Patent
active
046017232
ABSTRACT:
Ossicular prostheses for total reconstructive surgery of an infection-destroyed or traumatically damaged middle ear. Each prosthesis comprises a pair of cooperating assemblies which are adapted to be extended between the tympanic membrane and the fenestra vestibuli (oval window) in replacement of the auditory ossicles, namely the malleus, incus, and stapes. In the best mode a first rigid, preferably stainless steel shaft is pivotally received by a flanged socket surgically secured to the ear drum. Flanged socket structure secured surgically to the oval window receives the balled end of an outwardly projecting, rigid, generally tubular shaft. The extreme end of the latter shaft is adapted to be axially mated with the first shaft which is coaxially, slidably telescoped thereto. In an alternative embodiment each of the two cooperating assemblies preferably comprises elongated shaft structure including twin, parallel, closely-spaced shaft members which originate from an integral loop-like base. The base portion of the first assembly is adapted to be sutured to at least a portion of the reconstructed tympanic membrane, and the base portion of the other shaft assembly is adapted to be secured with fascia in contact with the oval window. The elongated shafts are coupled together permitting length compensating, relative axial displacements. An extensible bridge is thus established in replacement of the middle ear ossicles by the installed prosthesis and variations in air pressure etc., experienced by the thus-repaired human ear are compensated for by pivotal and/or swivelling movement of the prosthesis and by relative axial displacements facilitated by the coupled shaft assemblies thereof.
REFERENCES:
patent: 963346 (1910-07-01), Wilt
patent: 3254651 (1966-06-01), Collito
patent: 3710399 (1973-01-01), Hurst
patent: 4281419 (1981-08-01), Treace
patent: 4326512 (1982-04-01), Peerless
Apley Richard J.
Carver Stephen D.
Isabella David J.
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