Interbody fusion devices, systems and methods

A spinal fusion system comprising:

• a spinal implant comprising an endplate system and an insert;
• wherein the endplate system comprises an upper endplate and a lower endplate;
• an insert configured to be advanced and positioned between the upper endplate and the lower endplate to secure the spinal implant within a target intervertebral space;
• and
• a guiding assembly comprising upper and lower guiding members or plates and a proximal end comprising a housing and an actuator extending through the housing, wherein proximal ends of the upper and lower guiding members are secured to the housing, and wherein the upper and lower guiding members or plates are configured to removably attach to the upper and lower plates of the plate system to form a pathway;
• wherein, when the insert is advanced between the upper endplate and the lower endplate, the upper endplate is configured to at least partially contact the upper vertebral member, and the lower endplate is configured to at least partially contact the lower vertebral member;
• and
• wherein, upon advancement of the insert between the upper and lower endplates, the upper vertebral member is distracted relative to the lower vertebral member.

A spinal fusion system comprising:

• a spinal implant comprising upper and lower endplates and an insert configured to be positioned between the upper and lower endplates;
• wherein the insert is configured to be advanced and positioned between the upper endplate and the lower endplate to secure the implant within a target intervertebral space of a subject, the target intervertebral space extending between an upper vertebral member and a lower vertebral member of the subject;
• and
• a guiding assembly comprising an upper guiding member, a lower guiding member and an actuator, wherein the upper guiding member is configured to removably couple to the upper endplate, and wherein the lower guiding member is configured to removably couple to the lower endplate to form a pathway between the guiding members and between the endplates;
• wherein the actuator is configured to exert a force on the insert to advance the insert through the pathway and between the upper and lower endplates, wherein the insert includes at least one alignment feature to help predictably move the insert relative to the guiding members and the endplates as the insert is being advanced to the target intervertebral space;
• wherein, when the insert is advanced between the upper endplate and the lower plate, the upper endplate is configured to contact the upper vertebral member and the lower endplate is configured to contact the lower vertebral member;
• and
• wherein, upon advancement of the insert between the upper and lower endplates, the upper vertebral member is distracted relative to the lower vertebral member.