Hydrophobic ear plugs

Details Hydrophobic ear plugs Hydrophobic ear plugs

1994-11-30

1996-02-06

Brown, Michael A.

Surgery

Body protecting or restraining devices for patients or infants

Head or face protector

128867, A61F 1100, A61F 1106

Patent

active

054889618

ABSTRACT:
Ear plugs for swimming, snorkeling, scuba diving and other water related activities form a watertight seal within an individual's outer ear canals. The ear plugs have a lumen extending along the ear canal. A hydrophobic membrane extending across the lumen, which admits air into or out of the ear canal but blocks water, seals the ear against water but transmits air. This passage of air equalizes pressure across the plug, improves hearing with the ear plug in place, and prevents water contaminants, such as harmful infectious agents and pollutants, from entering the ear canal.

REFERENCES:
patent: 706975 (1902-08-01), Macbeth
patent: 904715 (1908-11-01), McWilliams
patent: 1279396 (1918-09-01), Wilson
patent: 1355276 (1920-10-01), Schultz
patent: 2070403 (1937-02-01), Hershman
patent: 3842829 (1974-10-01), Ellis
patent: 4465159 (1984-08-01), Stallings
patent: 4537187 (1985-08-01), Scott
patent: 4540063 (1985-09-01), Ochi et al.
patent: 4683587 (1987-07-01), Silverman
patent: 5113967 (1992-05-01), Killion et al.
Versapor.RTM.R Membrane-hydrophobic for venting applications, GelmanSciences Membrane & Device Division Product Data, Sep. 1993.
Doc's Proplugs.RTM. Performed Protective Earplugs, Nov. 1993.

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