Grommet

Details Grommet Grommet

1992-11-13

1995-02-14

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604284, A61M 2700

Patent

active

053890884

ABSTRACT:
A grommet at one side comprises a tubular part which widens out either in a regular trumpet-shaped curve ("monotonic") or via one or more "steps" or "bends" with the result that the risk of blockage is considerably reduced and the grommet is less quickly expelled from the eardrum. At the other side, the grommet is provided with a flange via which the grommet remains hooked behind the eardrum. This flange is so large - either round and the same size as the widely "fanning" top side of the trumpet-shaped top part of the grommet, or provided with one or more symmetrical or asymmetrical projections - that the grommet is held fast by the eardrum for a relatively long time. A recurrence of the fluid accumulation in the tympanic cavity or of an ear infection is consequently less likely to occur.

REFERENCES:
patent: 3818511 (1974-06-01), Goldberg et al.
patent: 3871380 (1975-03-01), Heros
patent: 4650488 (1987-03-01), Bays
patent: 4695275 (1987-09-01), Bruce et al.
patent: 4775370 (1988-10-01), Berry
patent: 4808171 (1989-02-01), Berger
patent: 5064417 (1991-11-01), Andreussi
patent: 5137523 (1992-08-01), Peerless et al.
patent: 5139502 (1992-08-01), Berg et al.

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