Device and method for autologous bone graft harvesting

A device for autologous bone graft harvesting, the device comprising:

• a longitudinal drill assembly having:
• a drill wall comprising an upper section and a lower section, the lower section forming an opening to a cavity, the lower section comprising a plurality of drill cutting teeth, the drill wall further forming at least one wall pocket;
• a drill plate disposed at the upper section of the drill wall, the drill plate forming one or more rod holes;
• a drill shaft extending perpendicular from the drill plate, the drill shaft defined by a flat surface, the drill shaft forming a longitudinal guide wire channel,
• the drill shaft being substantially aligned with, and rotatable about a longitudinal axis;
• a module assembly having:
• a module plate disposed above the drill plate in an adjacent, parallel relationship,
• the module plate being defined by an upper face and a lower face, the module plate forming one or more rod holes, the rod holes in the module plate being in substantial alignment with the rod holes in the drill plate;
• one or more pins extending from the upper face of the module plate;
• a module shank extending perpendicular from the module plate, the module shank defined by a wide upper end, a narrow lower end, whereby a shank shoulder forms between the upper and lower ends, the module shank further being defined by a module tunnel having a flat surface, the module tunnel adapted to receive the drill shaft, whereby the module assembly is operable to be displaced axially relative to the longitudinal drill assembly,
• whereby the flat surfaces of the drill shaft and the module shank align to at least partially restrict rotation by the module assembly relative to the longitudinal drill assembly;
• a saw assembly having:
• a saw plate being disposed between the module plate and the shank shoulder of the module shank in a snug relationship, the saw plate forming a central aperture sized and dimensioned to receive the drill shaft,
• whereby axial displacement of the saw plate relative to the module plate is at least partially restricted,
• whereby the saw assembly is operable to be displaced axially relative to the longitudinal drill assembly,
• the periphery of the saw plate forming one or more elongated slots having a pair of opposing ends, the slots adapted to receive the pins extending from the upper face of the module plate,
• whereby the saw plate is adapted to rotate in two directions until the pins engage one of the ends of the elongated slots,
• the saw plate comprising an internal mesh;
• one or more gears operatively joined with the internal mesh of the saw plate, whereby the saw plate and the gears rotate in opposite directions;
• one or more rods extending through the rod holes in the drill plate and the module plate,
• the rods being defined by a top end and a bottom end, the top end of the rods being operatively joined with the gears, whereby the rods rotate in conjunction with the gears;
• a pair of saws comprising multiple saw cutting teeth and a tip, the saws joined with the saw end of the rods, whereby the saws rotate in conjunction with the rods,
• whereby, during rotation, the tips of the saws move distally from each other to an open position, until the pins of the module plate engage a second end of the slot formed in the saw plate,
• whereby, during rotation, the tips of the saws move in proximity to each other near the longitudinal axis to a closed position, until the pins of the module plate engage a first end of the slot formed in the saw plate.