Patent 7160273 was granted and assigned to Medela on January, 2007 by the United States Patent and Trademark Office.
The suction pump is essentially comprised of three separate pump parts, namely of a drive unit located inside a main casing (1), of a collecting reservoir (8) and of a valve block (6), which is arranged directly between the casing (1) and reservoir, whereby these parts can be easily coupled to one another in a manner that enables them to be detached.