Abstract: The invention relates to a sensor for a body monitoring system comprising micro-needles for measuring body analyte, characterized in that it comprises a support base, at least one basic support plate, and at least one micro-needle distributed on the basic support plate, the basic support plate being adapted to be fixedly mounted on the support base.

Abstract: A capsule (220), said capsule (220) having a coupling face (222) configured to be coupled to a complementary shape on a housing (120), and a microneedle array (210) that is positioned on a planar contact surface (229). The coupling face (222) has rotational symmetry about an axis of rotation (Z) which extends orthogonally to the planar surface (229) and about which at least two coupling positions are permitted with a single and unique complementary shape on a housing (120), there being, within a fixed reference frame, no microneedle (210) in the same location as that of a different microneedle (210), in the two positions.