Anchoring devices, intervertebral implants and intervertebral systems are disclosed. In preferred configurations, these various objects share the feature of comprising or cooperating with an anchoring device (1) having a body comprising at least one curved plate (10) elongated along a longitudinal axis (L), designed to be inserted through a passage (21) crossing at least a part of implant (2), in order to penetrate into at least one vertebral endplate and attach implant (2) onto this vertebral endplate by means of at least one stop retaining the implant, characterized in that the curvature of said body is oriented in the width of plate.
