The present invention relates to the method of using polysulphated cyclodextrins or addition salts thereof for use in the treatment of arthrosis, and pharmaceutical compositions thereof. The tool comprises a magnetic assembly using one or more permanent magnets and at least one pole piece for extending a magnet pole and shaping the magnetic field to simulate a magnetic monopole in a sensitive volume within the formation. The message board is attached to the perimeter or side of the computer monitor or case, or used in conjunction with the keyboard or mouse. , button for activating the dispensing and aspiration of the sample. At least two of those diffractive zones have different areas so as to cause broadening of optical energy profiles at a near and a far foci of the diffractive zones for generating an intermediate focus.