Microdosing Device for Dosing of Smallest Quantities of a Medium

Abstract

A microdosing device for dosing smallest quantities of a medium, having an inlet device, an outlet device, a pump device and a media duct that leads from the inlet device to the outlet device, the inlet device having an inlet opening and an inlet valve having an inlet valve piston, and the outlet device having an outlet opening and an outlet valve having an outlet valve piston, and the pump device having a pump piston. The inlet valve piston, the outlet valve piston and the pump piston are situated on a common diaphragm layer. The microdosing device has the advantage that it is able to be produced in a simple and cost-effective manner.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a microdosing device for the dosing of smallest quantities of a medium, having an inlet device, an outlet device and a pump device, the inlet device having an inlet opening and an inlet valve having an inlet valve piston, and the outlet device having an outlet opening and an outlet valve having an outlet valve piston, and the pump device having a pump piston.BACKGROUND INFORMATION[0002]Microdosing devices are important in various fields of application, such as in medicinal technology, and are used, for instance, for continually dispensing insulin to a diabetes patient. In this context, smallest quantities of a medium have to be dispensed in an accurately dosed manner.[0003]Various implementations of microdosing devices are known from the related art. Most of these microdosing devices use silicon bulk micromechanics for patterning silicon wafers or glass wafers which are subsequently joined on top of each other by bonding.[...

AI Technical Summary

Benefits of technology

[0006]By contrast, the microdosing device according to the present invention has the advantage that it is able to be manufactured simply and cost-effectively.

[0008]That being the case, according to the exemplary embodiments and / or exemplary methods of the present invention only one single diaphragm layer is required, which acts as a diaphragm for both the inlet valve and the outlet valve and also for the pump device. Since only one diaphragm layer is required, the production of the microdosing device is made considerably easier, and a compact design of the overall unit is achievable.

Problems solved by technology

These constructions as well as others known from the related art are consequently very costly, for they frequently have a large number of layers, so that their production is complicated and costly.

Furthermore, it is difficult to ensure the tightness of such microdosing devices, both on the inlet and the outlet side.

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