Bone Plate with Complex, Adjacent Holes Joined by a Relief-Space

A bone plate adapted for use in situ to fix a spatial relationship of two bone parts, the bone plate comprising:

• a) an elongated plate having a longitudinal axis, a bone contacting bottom surface side with a recessed clearance channel disposed along the axis, and a top side, a plurality of through screw apertures each having a radius (r), and through which screw apertures bone screws are insertable into an underlying bone part to anchor the elongated plate to the bone part;
• b) at least two of the screw apertures being adjoined by a relief-zone that is further defined by two opposed unthreaded surfaces, each unthreaded surface has a compression ramp extending from the top side downwardly and inwardly part way through the plate thickness to an unthreaded lower portion, to form a complex aperture;
• c) the relief-zone is disposed on the parallel radii between the adjoined screw apertures, the complex aperture has a center-to-center distance (d) along the parallel radii between the two adjoined screw apertures that is at least equal to a sum of their radii (r), and the relief-zone facilitating inserting a bone screw into the underlying bone part to compress the elongated plate to the bone part;
• and
• d) at least one of the complex apertures has the relief zone disposed between a first threaded screw aperture and a second screw aperture.

A bone plate having a thickness extending from a bone-contacting bottom side to a top side with at least two complex apertures extending through the plate thickness, each complex aperture comprised of a first screw aperture, a second screw aperture and a relief-space,

• wherein the first screw aperture comprises a compression ramp extending from the top side of the plate downwardly and inwardly part way through the plate thickness to a first threaded lower portion;
• wherein the second screw aperture comprises a compression ramp extending from the top side of the plate downwardly and inwardly part way through the plate thickness to a second threaded lower portion;
• the relief-space interconnects the first screw aperture and the second screw aperture, and is further defined by two unthreaded surfaces, each unthreaded surface has a compression ramp extending from the top side downwardly and inwardly at least part way through the plate thickness to an unthreaded lower portion;
• the first threaded lower portion, unthreaded lower portion and the second threaded lower portion having a bar-bell shape extending from where the upper portion ends at the bar-bell shape to the bottom side of the bone plate with the first threaded lower portion not contacting the second threaded lower portion,
• the first threaded lower portion and the second threaded lower portion being adapted to lock with threads of a corresponding bone screw in one or both screw apertures;
• and
• the unthreaded lower portion being adapted to receive a corresponding bone screw.

A bone plate having a thickness extending from a bone-contacting bottom side to a top side with at least one complex aperture extending through the plate thickness, each complex aperture comprised of a first screw aperture, a second screw aperture and a relief-space,

• wherein the first screw aperture comprises a compression ramp extending from the top side of the plate downwardly and inwardly part way through the plate thickness to a first threaded lower portion;
• wherein the second screw aperture comprises a compression ramp extending from the top side of the plate downwardly and inwardly part way through the plate thickness to a second threaded lower portion;
• the first screw aperture and the second screw aperture (a) have an offset of a given distance between centers thereof, and (b) having centers staggered about the longitudinal axis of the plate;
• the relief-space interconnects the first screw aperture and the second screw aperture, and is further defined by two opposed unthreaded surfaces, each unthreaded surface has a compression ramp extending from the top side downwardly and inwardly at least part way through the plate thickness to an unthreaded lower portion;
• the first threaded lower portion, the unthreaded lower portions and the second threaded lower portion has a bar-bell shape extending from where the upper portion ends at the bar-bell shape to the bottom side of the bone plate with the first threaded lower portion not contacting the second threaded lower portion,
• the first threaded lower portion and the second threaded lower portion being adapted to lock with threads of a corresponding bone screw in one or both screw apertures;
• and
• the unthreaded lower portion being adapted to receive a corresponding bone screw.

A bone plate having a thickness extending from a bone-contacting bottom side to a top side with at least one complex aperture extending through the plate thickness, each complex aperture comprised of a first screw aperture, a second screw aperture and a relief-space,

• wherein the first screw aperture comprises a compression ramp extending from the top side of the plate downwardly and inwardly part way through the plate thickness to a first threaded lower portion;
• wherein the second screw aperture comprises a compression ramp extending from the top side of the plate downwardly and inwardly part way through the plate thickness to a second threaded lower portion;
• the relief-space interconnects the first screw aperture and the second screw aperture, and is further defined by two opposed unthreaded surfaces, each unthreaded surface has a compression ramp extending from the top side downwardly and inwardly at least part way through the plate thickness to an unthreaded lower portion;
• the first threaded lower portion, the unthreaded lower portions and the second threaded lower portion has a bar-bell shape extending from where the upper portion ends at the bar-bell shape to the bottom side of the bone plate with the first threaded lower portion not contacting the second threaded lower portion,
• the first threaded lower portion and the second threaded lower portion being adapted to lock with threads of a corresponding bone screw in one or both screw apertures;
• and
• the unthreaded lower portion being adapted to receive a corresponding bone screw.