A transmissive joint with elastic response for transmitting a torsional load between an actuating and an actuated device, the joint comprising a unitary body having a tubular structure around a central or longitudinal axis (X), the body showing a basic outline defined by sections on any planes orthogonal with said axis (X) that are mutually identical aside from a scale factor; a distribution of slots being formed in said body through removal of material, said slots defining the following elements in the same body: - at respective longitudinal ends of said body, a first and second annular element , lying over planes orthogonal with said central axis (X) and spaced along it, said annular elements being adapted for a mechanical connection with the actuating or the actuated device; and - a beam-shaped pattern extending between said annular elements and providing for a plurality of junctions to respective of said elements; ▪ wherein said junctions are in the same number for each annular element and regularly spaced following a direction defined by a circle (c) circumscribed to said outline, in a sequence that comprises alternatively a junction to the first annular element and a junction to the second annular element; characterised in that said pattern comprises at least two modules (M) each comprised between the midpoint of respective consecutive junctions on the same annular element, said modules repeating serially along said circumference, at least one junction being shared among two adjacent modules, the modules having each an internal symmetry mirrored with respect to plane (α) passing through said central axis (X) and for the midpoint of the single junction of the module to the opposed annular element; and wherein between a junction to an annular element and the consecutive junction to the other annular element said pattern follows a path substantially in accordance with a curved line, a polyline with at least three straight line segments, or a combination of straight line segments and curved lines. - at respective longitudinal ends of said body, a first and second annular element , lying over planes orthogonal with said central axis (X) and spaced along it, said annular elements being adapted for a mechanical connection with the actuating or the actuated device; and - a beam-shaped pattern extending between said annular elements and providing for a plurality of junctions to respective of said elements; ▪ wherein said junctions are in the same number for each annular element and regularly spaced following a direction defined by a circle (c) circumscribed to said outline, in a sequence that comprises alternatively a junction to the first annular element and a junction to the second annular element; characterised in that said pattern comprises at least two modules (M) each comprised between the midpoint of respective consecutive junctions on the same annular element, said modules repeating serially along said circumference, at least one junction being shared among two adjacent modules, the modules having each an internal symmetry mirrored with respect to plane (α) passing through said central axis (X) and for the midpoint of the single junction of the module to the opposed annular element; and wherein between a junction to an annular element and the consecutive junction to the other annular element said pattern follows a path substantially in accordance with a curved line, a polyline with at least three straight line segments, or a combination of straight line segments and curved lines. <EOS>