Device for closing a curved duct
US4920985A · kind A · utility
1Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Sep 19, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F11/08
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for closing a curved duct, especially an ear protector for insertion in the auditory canal (4) of the ear, consists of an elastic rod-shaped body (1), e.g. of foamed plastic, which is pointed at one end and the cross-sectional area of which is larger than that of the auditory canal. The pointed end of the rod-shaped body is considerably offset with respect to the longitudinal direction of the body so as to form a lip (5) which is unsymmetrical in relation to the longitudinal direction of the body and capable of conforming to the curved portion of the auditory canal when the rod-shaped body is inserted therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.