Intervertebral devices

An intervertebral fusion device configured to be received in an intervertebral space between first and second vertebrae, the intervertebral fusion device defining:

• a fusion device top surface which is configured to abut against the first vertebra when the intervertebral fusion device is received in the intervertebral space;
• a fusion device bottom surface which is configured to abut against the second vertebra when the intervertebral fusion device is received in the intervertebral space;
• a bone graft conveying aperture defined in at least one of the fusion device top surface and the fusion device bottom surface;
• a fusion device side boundary, which extends between the fusion device top surface and the fusion device bottom surface, and which defines a perimeter of the intervertebral fusion device;
• and
• a bone graft material holding space within the fusion device side boundary, the bone graft material holding space enclosed except by way of at least one bone graft material delivery opening and at at least one of the fusion device top surface and the fusion device bottom surface, each at least one bone graft material delivery opening extending from the fusion device side boundary to the bone graft material holding space, wherein
• the intervertebral fusion device comprises at least one closure component each configured to close a respective at least one bone graft material delivery opening, each at least one closure component comprising a base component and a protrusion, the protrusion shaped to be a snug fit in the bone graft material delivery opening when the protrusion protrudes in a delivery opening direction into the bone graft material delivery opening to thereby pressurize bone graft material contained in the bone graft material holding space whereby bone graft material is ejected through the bone graft conveying aperture defined in at least one of the fusion device top surface and the fusion device bottom surface, and
• each at least one closure component is structured such that the base component and the protrusion are arranged relative to each other in the delivery opening direction.

A method of installing an intervertebral fusion device in an intervertebral space between first and second adjacent vertebrae, the intervertebral fusion device defining a fusion device top surface, a fusion device bottom surface, and a fusion device side boundary which extends between the fusion device top surface and the fusion device bottom surface and which defines a perimeter of the intervertebral fusion device, the method comprising:

• disposing the intervertebral fusion device in the intervertebral space such that the fusion device top surface abuts against the first vertebra and the fusion device bottom surface abuts against the second vertebra;
• disposing bone graft material in a bone graft material holding space, the bone graft material holding space enclosed except by way of at least one bone graft material delivery opening and at at least one of the fusion device top surface and the fusion device bottom surface, each at least one bone graft material delivery opening extending from the fusion device side boundary to the bone graft material holding space;
• closing each at least one bone graft material delivery opening with a respective closure component, the closure component comprising a base component and a protrusion;
• and
• pressurizing the bone graft material in the bone graft material holding space by movement into the bone graft material delivery opening of the respective protrusion in a delivery opening direction whereby bone graft material is ejected from the bone graft material holding space through a bone graft conveying aperture defined in at least one of the fusion device top surface and the fusion device bottom surface,
• wherein the respective closure component is structured such that the base component and the protrusion are arranged relative to each other in the delivery opening direction.