Blade anchor systems for bone fusion

A fusion device comprising:

• a central portion comprising a biconcave leading edge, a blunt trailing end opposite the leading edge, a first lateral end, and a second lateral end opposite the first lateral end;
• a first lateral blade transversely mounted to the first lateral end of the central portion, wherein the first lateral blade comprises a tapered first leading point and a first trailing portion opposite the first leading point;
• and
• a second lateral blade transversely mounted to the second lateral end of the central portion, wherein the second lateral blade comprises a tapered second leading point and a second trailing portion opposite the second leading point;
• wherein the leading edge and the first and second leading points all face the same way, wherein the trailing end and the first and second trailing portions all face the same way;
• wherein the first lateral blade extends outwardly from the leading edge and the trailing end of the central portion so that the leading edge and the trailing end are between the first leading point and the first trailing portion and;
• wherein the first lateral blade comprises a first exterior surface and a first interior surface opposite the first exterior surface, wherein the first exterior surface faces away from the central portion, wherein the first interior surface is sloped and intersects the first exterior surface at the first leading point.