Biological drainage shunt
US4175563A · kind A · utility
116Cited by
3References
11Claims
0Family size
Inventors
Key dates
| Filing date | Oct 5, 1977 |
| Grant date | Nov 27, 1979 |
| Priority date | — |
| Expiry date | Oct 5, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F11/202
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A body fluid drainage apparatus or shunt for implantation in the inner ear or elsewhere includes an essentially rigid elongated tube having one open end and a closed, flexible end with a valve, a generally rigid housing fixedly secured to and telescoping over the closed end of said elongated tube, a pair of angularly, oppositely extending arms fixedly secured to the assembly, and a pair of plastic films, with open sides, secured to the apparatus enclosing the valve. When the valve is a slit valve, it is sealed in a flexible tube sealed to and extending a short distance beyond the elongated tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.