FIELD: medicine.
SUBSTANCE: device comprises a body comprising ribs coupled in the form of a hinged parallelogram; in the middle of the body, there are two cross-wise plates. Each plate is particularly parallel with its pair of sides, and four points of the plates and two internal ribs of the body comprise concave cuts that form hollow annular space in the stationary position (a rectangular position of the body ribs) in the body between the plates and sides thereof; surfaces of the concave cuts comprise pointed projections within at least one hollow annular space.
EFFECT: higher load and improved massage effect.
7 cl, 4 dwg
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