1. The drive unit of the system for expressing breast milk containing a casing and a vacuum pump that fits in the specified casing, and the specified casing has a connector (15) for attaching the tube (4) and additionally an outer surface (11) around which you can wrap the specified tube (4 ); wherein at least a portion of said outer surface (11) is bent so that said tube can be wrapped around the casing without creasing; while the outer surface (11) contains a recess (14), and the connector (15) is located in the specified recess (14); characterized in that the surface (17, 29) of said recess (14) is bent away from the connector (15) so that said surface (17, 29) of recess (14) directs and supports the tube (4) when said tube (4) ) is connected to the connector (15) so that the portion of the tube (4) closest to the connector (15) does not form creases. 2. The drive unit according to claim 1, wherein at least a portion of the outer surface (11) that is curved comprises a plurality of linear sections extending at an oblique angle to each other. The drive unit according to claim 1, in which at least a portion of the outer surface (11), which is curved, contains a radius. The drive unit according to claim 1, in which the outer surface (11) further comprises a straight section. The drive unit according to any one of paragraphs. 1-4, in which the outer surface (11) has a flange (18) made to hold the tube (4) wrapped around the casing. 6. The drive unit according to any one of paragraphs. 1-4, in which the outer surface (11) is formed with at least one ridge to guide the tube (4) around the casing. The drive unit according to any one of paragraphs. 1-4, in which the connector (15) comprises a pipe (16) extending from said recess (14) so that the tube (4) can be attached1. Приводной узел системы сцеживания грудного молока, содержащий кожух и вакуумный насос, вмещаемый в указанный кожух, причем указанный кожух имеет коннектор (15) для прикрепления трубки (4) и дополнительн