Blood sampling device
US4657028A · kind A · utility
16Cited by
28References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1985 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Apr 19, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/150259
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood sampling device (10), in particular intended for arterial blood sampling and blood gas analysis, is disclosed. The sampling device is provided with valve means which in the dry state permits expulsion of gas from the sampler reservoir (18), but which automatically closes on contact with blood. The valve means comprises two mating surfaces (21, 26) retained apart by an interlayer of a porous or fluffy fibrous material (22), which collapses on contact with a liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.