The present disclosure provides a medical device (100) with portions that are configured for fitting and being retained simultaneously into two cavities on opposite sides of the body of a subject, for example the eustachian tubes or the fallopian tubes. The device (100) may comprise an elongated member (102) with a central segment (103) and first and second peripheral segments (104, 106) extending therefrom. These segments differ in their intended function and eventual in situ positioning: the two peripheral segments (104, 106) intended for insertion and positioning within the two cavities and exerting their function within the cavities. The central segment (103) serves as a link between two peripheral segments and may also be used for some other functions by its position. The elongated member may have elastic properties.
