Vorrichtung und Verfahren zur Aufnahme und Abgabe von Speichel

摘要

A device for collecting and releasing a sample liquid, especially saliva as well as a system and method are provided. The device and system obtains and provides a defined saliva sample, i.e., a filtered and homogeneously mixed saliva sample of a predetermined volume, in the simplest possible manner. The device has a sampling tip (2) made of an incompressible and porous material, which is moved with its mouthpiece (4) in the mouth of a test subject for 1 to 2 minutes and collects saliva based on the capillary action. A reagent depot containing reagent liquid is subsequently cut up by a puncturing cylinder (9) at the sample collector, and the reagent liquid then enters the cavity (10) of the sampling tip (2). Finally, the complete pushing together of the pneumatic cylinder (26) and the cylinder tube (1) of the sample collector finally presses the saliva and the reagent liquid present in the cavity (10) through the sampling tip (2) and the filter reactor (21), which is fitted thereto in a positive-locking manner and is likewise incompressible and porous with a smaller mean pore size, so that saliva and liquid are discharged as droplets (40) in a filtered and mixed manner.