Bone fixation plate
AssigneeAce Medical Company
InventorCorey M. Selman
Life of this patent
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Abstract
An implantable bone plate comprises a solid, elongated, generally circular rod member having a plurality of axially-aligned flat members spaced apart along the length thereof. Each flat member has a width greater than the thickness of the rod member and an aperture for receiving a bone screw or the like. The apertures are normal to and intersect the axis of the rod member. The thickness of the flat members is preferably at least as great as the thickness of the rod member so that only the flat members bear against a bone. Preferably, the flat members are truncated spherical members whose spherical surfaces intersect the rod member.
Claims18
An implantable bone plate comprising a solid rod member having a length defining a longitudinal axis, the rod member having a plurality of enlarged bone-engaging members spaced apart along the length of the rod member, cylindrical portions between the bone-engaging members, the cylindrical portions having an essentially circular cross-section defining a first thickness to the rod member, the bone-engaging members and the cylindrical portions being centered on the longitudinal axis, each of the bone-engaging members having a first surface defining a bearing surface for bearing against a bone and having a second surface opposite the first surface, the first and second surfaces defining a second thickness not smaller than the first thickness, the bone-engaging members each having an aperture therein for receiving a bone fastener, each aperture having an aperture axis normal to the bearing surface and intersecting the longitudinal axis of the rod member.
An implantable bone plate comprising:
- (a) a solid rod member having a length defining a longitudinal axis and an essentially cylindrical portion defining a sized diameter;
- (b) a plurality of screw-aperture members spaced apart by the cylindrical portion along the length of the rod member and centered on the longitudinal axis, each of the screw-aperture members having
- (i) first and second surfaces arranged substantially parallel to each other and spaced apart by a distance at least as great as the diameter, the first surface defining a bearing surface for bearing against a bone,
- (ii) a frusto-spherical outer surface between the first and second surfaces, the frusto-spherical surface forming generally circular outer edges to the respective first and second surfaces, the cylindrical portion joining the frusto-spherical surface so that the first and second surfaces are each substantially parallel to the axis of the rod member, and
- (iii) an aperture extending between the first and second surfaces, the aperture having an axis substantially normal to the longitudinal axis of the rod member and arranged to receive a bone fastener.
Dependencies are inferred from the claim text.