1. The infusion part containing the cannula part (7) and the path of the fluid, however! the cannula part (7) comprises a body (24) formed of solid material, the body (24) having an internal through hole, where the through hole is fluidly connected to the cannula (22), the cannula (22) having an internal hole that provides fluid communication with the patient, wherein the housing (24) of the cannula portion (7) has an opening (20) matching the inlet or outlet (12) of the fluid path, which leads to fluid communication between the fluid path and cannula part (7), and indicated s consistent two holes (12, 20) allow for unlimited when they are positioned opposite one another! the fluid path contains at least one inlet and one outlet (12, 13) through which the fluid can enter and flow out of the fluid path, and! a seal (18) is located between the cannula part (7) and the inlet / outlet (12) of the fluid path when the cannula part (7) is in the use position in order to maintain the fluid path to the cannula,! characterized in that the seal (18) surrounds the inlet / outlet (12) and / or the distance d1 between the center line c of the cannula part and a point on the outer surface of the cannula part located on or above the upper edge of the seal (18) is greater than the distance d2 between the center line with the cannula and the point on the outer surface of the cannula, located on or under the lower edge of the seal1. Инфузионная часть, содержащая канюльную часть (7) и путь прохождения текучей среды, при этом ! канюльная часть (7) содержит корпус (24), сформированный из твердого материала, причем корпус (24) имеет внутреннее сквозное отверстие, где сквозное отверстие связано по текучей среде с канюлей (22), причем канюля (22) имеет внутреннее отверстие, которое обеспечивает связь по текучей среде с пациентом, при этом корпус (24) канюльной части (7) имеет отверстие (20), согласующееся с впускным или выпускным отверстием (12) пути прохождения текучей среды, что приводит