Tympanic membrane vent

Details Tympanic membrane vent Tympanic membrane vent

1977-02-16

1978-06-13

Frinks, Ronald L.

Surgery

Truss

Perineal

3 1, 128151, A61B 1900, A61F 118

Patent

active

040943038

ABSTRACT:
The middle ear space is vented through the tympanic membrane by a piece of porous plastic material positioned to extend through the tympanic membrane. The pore size is in the range of 5 to 25 micrometers in diameter to effectively prevent water passage and permit tissue ingrowth a few pores deep from the tympanic membrane into the side walls of the vent. The vent is generally cylindrical in shape provided with a section of reduced cross-sectional area intermediate its ends, which section engages the tympanic membrane when the vent is in position.

REFERENCES:
patent: 3807409 (1974-04-01), Paparella et al.
patent: 3916873 (1975-11-01), Wasserman

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