Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Ear or nose prosthesis
Patent
1990-02-27
1991-09-10
Isabella, David J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Ear or nose prosthesis
A61F 218
Patent
active
050470531
ABSTRACT:
A permanent middle ear vent tube and method for permanent ventilation of the middle ear include implanting a tube with a tubular base portion have at one end an eccentric flange and formed of a non-compressible material. The tube is implanted in a notch drilled into the bony canal wall and rotating the tube into place.
REFERENCES:
patent: 3982545 (1976-09-01), Silverstein
patent: 4094303 (1978-06-01), Johnston
patent: 4676796 (1987-06-01), Merwin et al.
patent: 4744792 (1988-05-01), Sander et al.
William M. Luxford, et al., Ventilation Tubes: Indications and Complications, Oct. 1984.
Mark T. Weigel, MD, et al., A Prospective Randomized Study of Four Commonly Used Tympanotomy Tubes, Jan. 16, 1988.
"Vitalluum Surgical Appliances", Austenal Laboratories, Inc. (Catalog) Surgical Div., New York, N.Y., Mar. 1948, p. 20.
Isabella David J.
Smith & Nephew Richards Inc.
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