Bone plate
DCFirst Claim
Patent Images
1. A bone plate defining a longitudinal axis and comprising:
- an upper surface;
a lower surface; and
at least one hole extending through the upper and lower surfaces, the hole defining a central axis and being elongated in a direction substantially aligned with the longitudinal axis, wherein the hole is at least partially threaded and the threaded portion of the hole tapers inward with respect to the central axis.
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Abstract
A bone plate includes an upper surface, a bone contacting surface, and at least one hole extending through the upper and bone contacting surfaces. The bone plate defines a longitudinal axis. The at least one hole defines a central axis and is elongated in a direction substantially aligned with the longitudinal axis. The hole may include a threaded portion and a non-threaded portion, and the threaded portion may extend through an angle of between about 190° and about 280° with respect to the central axis.
333 Citations
39 Claims
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1. A bone plate defining a longitudinal axis and comprising:
-
an upper surface;
a lower surface; and
at least one hole extending through the upper and lower surfaces, the hole defining a central axis and being elongated in a direction substantially aligned with the longitudinal axis, wherein the hole is at least partially threaded and the threaded portion of the hole tapers inward with respect to the central axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
the hole defines a first dimension on the lower surface that is substantially parallel to the longitudinal axis;
the hole defines a second dimension on the lower surface that is substantially perpendicular to the longitudinal axis; and
the first dimension is between 1.1 and 3 times larger than the second dimension.
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6. The bone plate of claim 1, further comprising a bone screw including a screw head that is configured and dimensioned to threadably engage the threaded portion and fix the bone screw at a predetermined angle with respect to the bone plate.
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7. The bone plate of claim 1, wherein the hole is configured and dimensioned to engage a substantially spherical screw head and provide compression of fractured bone fragments.
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8. The bone plate of claim 7, wherein the hole includes a non-threaded portion having a concave recessed portion in the upper surface.
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9. The bone plate of claim 8, wherein the recessed portion is substantially spherical.
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10. The bone plate of claim 1, wherein the threaded portion extends through an angle of between about 190°
- and about 280°
with respect to the central axis.
- and about 280°
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11. The bone plate of claim 1, wherein the threaded portion extends through an angle of between about 200°
- and about 250°
with respect to the central axis.
- and about 250°
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12. The bone plate of claim 1, further comprising at least one second hole that is at least partially threaded, wherein the second hole tapers inward in a direction along the central axis from the upper surface to the lower surface.
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13. The bone plate of claim 12, wherein the second hole defines an outer perimeter that is substantially circular.
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14. A bone plate defining a longitudinal axis and comprising:
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an upper surface;
a lower surface;
a first hole extending through the upper and lower surfaces, the first hole defining a central axis and being elongated in a direction substantially aligned with the longitudinal axis, wherein the first hole is at least partially threaded; and
a second hole extending through the upper and lower surfaces and defining a central axis, the second hole being at least partially threaded, and tapering inward in a direction along the central axis from the upper surface to the lower surface. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A bone plate defining a longitudinal axis and comprising:
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an upper surface;
a lower surface; and
at least one hole extending through the upper and lower surfaces, the hole defining a central axis and being elongated in a direction substantially aligned with the longitudinal axis, wherein the hole includes a threaded portion and a non-threaded portion, and the threaded portion extends through an angle of between about 190° and
about 280°
with respect to the central axis.- View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
the threaded portion extends through a first angle at the upper surface;
the threaded portion extends through a second angle at the lower surface; and
the first angle is larger than the second angle.
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27. The bone plate of claim 26, wherein the first angle is between about 200°
- and about 270°
, and the second angle is between about 180° and
about 230°
.
- and about 270°
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28. The bone plate of claim 24, wherein the hole defines first and second ends spaced apart along the longitudinal axis, and the threaded portion is disposed adjacent one of the ends.
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29. The bone plate of claim 28, wherein the threaded portion is located closer to a central portion of the bone plate than to an end portion of the bone plate.
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30. The bone plate of claim 24, wherein the non-threaded portion is configured and dimensioned to engage a substantially spherical screw head and provide compression of fractured bone fragments.
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31. The bone plate of claim 30, wherein the non-threaded portion includes a concave recessed portion in the upper surface.
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32. The bone plate of claim 31, wherein the recessed portion is substantially spherical.
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33. The bone plate of claim 24, wherein:
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the hole defines a first dimension on the lower surface that is substantially parallel to the longitudinal axis;
the hole defines a second dimension on the lower surface that is substantially perpendicular to the longitudinal axis; and
the first dimension is between 1.1 and 3 times larger than the second dimension.
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34. The bone plate of claim 24, wherein the threaded portion tapers inward in a direction from the upper surface towards the lower surface.
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35. The bone plate of claim 34, in the threaded portion conically tapers at a cone angle of between about 5°
- and about 20°
.
- and about 20°
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36. The bone plate of claim 35, wherein the threaded portion conically tapers from the upper surface to the lower surface.
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37. The bone plate of claim 24, further comprising a bone screw including a screw head that is configured and dimensioned to threadably engage the threaded portion and fix the bone screw at a predetermined angle with respect to the bone plate.
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38. The bone plate of claim 24, further comprising at least one second hole that is at least partially threaded, wherein the second hole tapers inward in a direction along the central axis from the upper surface to the lower surface.
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39. The bone plate of claim 38, wherein the second hole defines an outer perimeter that is substantially circular.
Specification