Liquid sampling and test apparatus
US5636640A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Feb 6, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/4905
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for sampling blood which includes a deformable housing defining a chamber that retains liquid. The housing has a pierceable membrane. The apparatus also includes a resilient piercer member that is adjacent the wall of a chamber and adapted to puncture the pierceable membrane. A removable layer that covers at least a portion of the pierceable membrane. Depression of the deformable housing proximate the piercer member urges the piercer member to puncture the pierceable membrane. The piercer member thereby forms an opening, allowing liquid to be drawn through the opening and into the chamber. Thereafter, the piercer member returns into the deformable housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.