Abstract: The invention relates to a cardiotocography girdle. It is in the form of a spherical cap and comprises at least nineteen ultrasound transducers, denoted USTs, which are positioned on a first support layer (23) made of an elastic material, each UST being positioned in a support cavity (20), said girdle comprising a second support layer (24), likewise made of an elastic material and which encapsulates said USTs housed in the support cavities (20) with the first support layer (23), assembly being performed by adhesively bonding the first support layer (23) to the second support layer (24).