Implantable device, in particular of the inter vertebral spacer type

An implantable device for maintaining an intervertebral space between overlying and underlying vertebrae, the implantable device comprising:

• an intervertebral wedge comprising an upper bearing zone configured to bear against at least a portion of the lamina of the overlying vertebra, and a lower bearing zone configured to bear against at least a portion of the lamina of the underlying vertebra, said upper bearing zone and said lower bearing zone being separated by a minimum distance Da to maintain an intervertebral space, wherein the intervertebral wedge is configured to be received in an interlaminar space between said laminae, and the intervertebral wedge includes further first and second lateral faces extending between said upper and lower bearing zones, and front and rear faces extending between said upper and lower bearing zones,
• and said implantable device further comprises:
• a first lateral spring and a second lateral spring, each of said first and second lateral springs having a position A relative to the intervertebral wedge in a position for inserting the implantable device and a position B relative to the intervertebral wedge in a position for implanting the implantable device, the positions A and B being different, and wherein both of said first lateral spring and second lateral spring are configured:
• to freely translate from position A to position B, and
• to form a retention component arranged relative to the intervertebral wedge to block the migration of the intervertebral wedge toward the spinal canal in position B, and
• wherein the first and second lateral springs extend from said first and second lateral faces of the intervertebral wedge respectively,
• wherein said implantable device comprises a main armature comprising a first armature and a second armature, and wherein the main armature extends partly through the intervertebral wedge, the first armature and the second armature are joined together by one or more junction arms extending through the intervertebral wedge between said first and second lateral faces of the intervertebral wedge, said junction arm(s) including at least one elongated metallic element,
• wherein the first lateral spring comprises the first armature comprising one or more at least partially metallic elongated elements,
• wherein the second lateral spring comprises the second armature comprising one or more at least partially metallic elongated elements,
• wherein the first armature comprises a first upper arm and a first lower arm which diverge from each other,
• wherein the first armature comprises a first intermediate arm, continuous or discontinuous, in connection with the first upper arm and with the first lower arm,
• wherein in position A, the first lateral spring and the second lateral spring are folded down respectively against the first and second lateral faces of the intervertebral wedge in order that the first lateral spring is in a sagittal plane S1 and the second lateral spring is in a sagittal plane S2,
• wherein in position B, the first lateral spring is in a frontal plane F1 and the second lateral spring is in a frontal plane F2,
• wherein sagittal planes S1 and S2 are intersecting with the planes F1 and F2 respectively, and wherein the intervertebral wedge includes a core in at least one polymer material that is overmoulded over at least a part of the main armature comprising said one or more junction arms, said core being enveloped at least partially by an outer textile envelope.