Minimal access occipital plate
First Claim
Patent Images
1. A bone plate for securing a spinal fixation element to bone, the bone plate comprising:
- a base portion having a top face;
a rod receiving portion extending from the base portion, the rod receiving portion including a channel for receiving a spinal fixation element; and
a bone anchor receiving portion comprising a plurality of raised projections, each raised projection projecting from the top face of the plate and forming a hole for receiving a bone anchor into the raised projection and through the base portion, each hole having a hole axis extending at an acute angle with respect to the top face, wherein the bone anchor receiving portion is characterized by an X-Y plane, a Y-Z plane and an X-Z plane, with at least one hole axis oriented at an acute angle with respect to the top face in a plane parallel to one of the X-Y plane, Y-Z plane and X-Z plane, and another hole axis oriented at an acute angle with respect to the top face in a plane parallel to another of the X-Y plane, Y-Z plane and X-Z plane.
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Abstract
A bone plate for securing a spinal fixation element to bone includes a base portion having a top face, a rod receiving portion and a bone anchor receiving portion. The bone anchor receiving portion includes a plurality of angled holes for receiving bone screws. At least one of the screw holes is oriented at an acute angle relative to the top face of the plate.
38 Citations
16 Claims
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1. A bone plate for securing a spinal fixation element to bone, the bone plate comprising:
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a base portion having a top face; a rod receiving portion extending from the base portion, the rod receiving portion including a channel for receiving a spinal fixation element; and a bone anchor receiving portion comprising a plurality of raised projections, each raised projection projecting from the top face of the plate and forming a hole for receiving a bone anchor into the raised projection and through the base portion, each hole having a hole axis extending at an acute angle with respect to the top face, wherein the bone anchor receiving portion is characterized by an X-Y plane, a Y-Z plane and an X-Z plane, with at least one hole axis oriented at an acute angle with respect to the top face in a plane parallel to one of the X-Y plane, Y-Z plane and X-Z plane, and another hole axis oriented at an acute angle with respect to the top face in a plane parallel to another of the X-Y plane, Y-Z plane and X-Z plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A bone plate for securing a spinal fixation element to bone, the bone plate comprising:
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a base portion having a top face; a rod receiving portion for receiving a spinal fixation element; and a bone anchor receiving portion comprising a plurality of raised projections, each raised projection projecting from the top face of the plate and forming a hole for receiving a bone anchor into the raised projection and through the base portion, each hole having a hole axis extending at an acute angle with respect to the top face, the axes of the holes converging toward one another as they extend away from the top face of the plate, wherein the bone anchor receiving portion is characterized by an X-Y plane, a Y-Z plane and an X-Z plane, with at least one hole axis oriented at an acute angle with respect to the top face in a plane parallel to one of the X-Y plane, Y-Z plane and X-Z plane, and another hole axis oriented at an acute angle with respect to the top face in a plane parallel to another of the X-Y plane, Y-Z plane and X-Z plane. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification