Scienion Ag

Wita Gmbh

Christian Wurzel

Holger Eickhoff

Brigitte Wittmann-Liebold

The invention relates to a microdispenser () for dispensing a liquid sample in a dispensing device, with a sample container () for receiving the liquid sample, and with a nozzle () for dispensing the sample located in the sample container (). The microdispenser () with the filled sample container () can in this case be stored independently of and fluidically separately from the dispensing device, without the sample escaping from the sample container () during storage.

Microdispenser and associated operating method

This invention describes a new analysis and dosing system and a method to manufacture such devices based on the latest microelectronic and micromachining working methods. On chip or wafer 1 which consists of the one- or multilayer substrate 2 and one- or multilayer cover 3, are arranged the essential construction components as reactor 6a, detector 6b, converter/collector 6c, injection valve 6d, micropumps, sensors, and valves V1 to V30, of the system, and the connection(s) to a detecting/metering device. The substrate 2 and/or the cover 3 show depressions 4 to build cavities and the co-operation of the elements 6a . . . 6n.

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Berlin, Germany

Christian Wurzel