Double-valved variable pressure device for hydrocephaly
US5660200A · kind A · utility
11Cited by
9References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1995 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Apr 26, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7881
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to a double-valved variable pressure device for hydrocephaly having a vertical capsule with sloped ends ending in upper and lower coupling sectors appropriate for connection to a proximal catheter and a distal catheter that constitute the input and output for a cephalo-rachidian liquid through the body. The liquid or volume has its pressure controlled by means of two valves which maintain a constant drained volume along a wide range of pressures the device is submitted to.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.