Abstract: The present invention relates to a sound diffusion device (300) comprising a single box (310) and, in this single box (310), at least two superimposed high-frequency acoustic sources (320), and a plurality of superimposed medium and/or low-frequency sources (330) and arranged to the left and/or to the right of the high-frequency acoustic sources (320), the high-frequency acoustic sources (320) being coupled individually to a wave guide (340) so as to generate a vertical wave front with a fixed non-constant curvature. Such a device (300) makes it possible to minimise discontinuities between the acoustic sources providing high quality sound diffusion (no parasite lobe), to considerably reduce the weight and the cost of manufacturing and also enables rapid installation which does not require the angular adjustment of each acoustic source relative to one another contrary to existing devices.

Abstract: The present invention relates to a sound diffusion device (300) comprising a single box (310) and, in this single box (310), at least two superimposed high-frequency acoustic sources (320), and a plurality of superimposed medium and/or low-frequency sources (330) and arranged to the left and/or to the right of the high-frequency acoustic sources (320), the high-frequency acoustic sources (320) being coupled individually to a wave guide (340) so as to generate a vertical wave front with a fixed non-constant curvature. Such a device (300) makes it possible to minimise discontinuities between the acoustic sources providing high quality sound diffusion (no parasite lobe), to considerably reduce the weight and the cost of manufacturing and also enables rapid installation which does not require the angular adjustment of each acoustic source relative to one another contrary to existing devices.

Abstract: A forceps (1) for gripping an intervertebral implant (2), said forceps comprising two rigid arms (11) that are hinged relative to one another at a connection member (10), the two arms (11) defining between them an internal space (120), each arm (11) forming a jaw (17), the two jaws (17) being for coming into engagement with an intervertebral implant (2), the jaws (17) being movable between an open position and a closed position in clamping engagement with the implant (2), at least one of the two arms (11) including a cam surface (16) for urging the jaws (17) in the open position; said forceps being characterized in that the cam surface (16) extends outside the internal space (120) defined between the arms (11). The present invention further provides an implantation kit and an implantation assembly comprising said forceps and an intervertebral implant.