This implantation device (1) comprises: a set of separable implants (2), a guide member (6) defining a passage (8) for guiding the set of implants (2) in translation towards the outlet orifice (10), a transmission member (12) for transmitting a pushing force (P2) in order to move the set of implants (2) towards an outlet, the transmission member (12) having several successive projections (14), a pushing member (16) to allow the practitioner to generate the pushing force (P2), a bearing part (20) being configured to bear against several of the projections (14) during successive movements of the pushing member (16), the bearing part (20) having in succession a bearing position and a clearing position, and a unidirectional stop element (26) connected to the guide member (6) and configured to have in succession i) a configuration of clearance by a projection (14) and ii) a stop configuration so as to immobilize the transmission member (12) in the inverse direction of the translation towards the outlet.
