A sampling member defines a passageway including an inlet opening for reception of a bodily fluid therein, and a wicking member having a first portion coupled with the sampling member adjacent to the inlet opening. The wicking member further includes a second portion displaced from the first portion...http://www.google.es/patents/US7264627?utm_source=gb-gplus-sharePatente US7264627 - Wicking methods and structures for use in sampling bodily fluids
Wicking methods and structures for use in sampling bodily fluids