An infusion equipment system, comprising: a base (102, 190, 326, 374, 396, 398, 402, 406, 408, 420, 440, 506, 600) that can be attached on a distal side thereof to a patient at an infusion site, the base comprising: a base pillar extending proximally from a surface of the base, the base pillar comprising: an interlocking part (113, 333, 381)； and a base interlocking element (114, 208, 328, 376, 616) extending proximally from the interlocking part； wherein the interlocking part has a lateral width smaller than the base interlocking element, and the base abutment has a plurality of substantially flat side surfaces； and a fluid connector (338, 360, 394) that can be removably coupled to the base, the fluid connector comprising: a part (339, 430) of fluid path, comprising: a cannula (353, 372) extending from an upper inner surface of the fluid path part； and a plurality of internal side walls corresponding to at least two of the plurality of flat side surfaces of the base pillar, thus facilitating the connection between the base and the connector (338, 360, 394) for fluids in a plurality of connection positions of discrete rotation； where, when the connector (338, 360, 394) is interlocked for fluids in the base, the connector interlocking element (s) are coupled to the interlocking part of the base pillar and limit the proximal displacement of the fluid connector in relationship with the base characterized in that the fluid connector (338, 360, 394) further comprises: at least one connector interlocking element (342, 386) that is connected with the possibility of displacement to the part (339, 430) of path for fluids and which can move in relation to the inner side walls to an interlocking position in which at least a part of the connector interlocking element extends into the part of the fluid path part (339, 430)Un sistema de equipo de infusión, que comprende: una base (102, 190, 326, 374, 396, 398, 402, 406, 408, 420, 440, 506, 600) que puede unirse en un lado distal
