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...http://www.google.de/patents/US5636640?utm_source=gb-gplus-sharePatent US5636640 - Liquid sampling and test apparatus
