Orthopedic plating assembly for bone fixation and subsidence
First Claim
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1. A method for installing an orthopedic plate assembly for bone fixation comprising:
- placing an orthopedic plate at or near an area of treatment, the orthopedic plate having an upper surface, a lower surface, and at least one opening that extends between the upper surface and the lower surface configured and dimensioned to receive an orthopedic anchor, a first blocking member including a cut-out portion, the first blocking member having a blocking position and a non-blocking position, the first blocking member being rotatable from the non-blocking position to the blocking position, wherein in the non-blocking position, the cut-out portion is configured to face the orthopedic anchor and in the blocking position, the cut-out portion is configured to face away from the orthopedic anchor, and a second blocking member removably connected to the orthopedic plate and positioned to cover at least a portion of the opening, wherein the second blocking member rests above an uppermost surface of the orthopedic plate; and
installing at least one orthopedic anchor through the at least one opening from an uninstalled position to an installed position where the at least one orthopedic anchor engages the orthopedic plate and respective anatomy in the area of treatment, wherein the orthopedic anchor is able to pivot and laterally translate with respect to the orthopedic plate when in the installed position, and wherein the first blocking member and the second blocking member cooperate to prevent the at least one orthopedic anchor from uninstalling from the orthopedic plate when the first blocking member is in the blocking position, wherein the second blocking member comprises a top surface, a bottom surface and sidewalls between the top surface and the bottom surface, such that rotation of the first blocking member causes the orthopedic anchor to be bounded by a sidewall of the first blocking member and the bottom surface of the second blocking member.
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Abstract
Orthopedic plating assemblies and methods for bone fixation that include an orthopedic plate and orthopedic anchors that can accommodate subsidence in the vertebral bodies as well as prevent the anchors from “backing out” of their installed position. The orthopedic anchors may be capable of rotating and translating with respect to the plate, and the plate may be able to translate after being fastened to the vertebral bodies.
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Citations
20 Claims
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1. A method for installing an orthopedic plate assembly for bone fixation comprising:
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placing an orthopedic plate at or near an area of treatment, the orthopedic plate having an upper surface, a lower surface, and at least one opening that extends between the upper surface and the lower surface configured and dimensioned to receive an orthopedic anchor, a first blocking member including a cut-out portion, the first blocking member having a blocking position and a non-blocking position, the first blocking member being rotatable from the non-blocking position to the blocking position, wherein in the non-blocking position, the cut-out portion is configured to face the orthopedic anchor and in the blocking position, the cut-out portion is configured to face away from the orthopedic anchor, and a second blocking member removably connected to the orthopedic plate and positioned to cover at least a portion of the opening, wherein the second blocking member rests above an uppermost surface of the orthopedic plate; and installing at least one orthopedic anchor through the at least one opening from an uninstalled position to an installed position where the at least one orthopedic anchor engages the orthopedic plate and respective anatomy in the area of treatment, wherein the orthopedic anchor is able to pivot and laterally translate with respect to the orthopedic plate when in the installed position, and wherein the first blocking member and the second blocking member cooperate to prevent the at least one orthopedic anchor from uninstalling from the orthopedic plate when the first blocking member is in the blocking position, wherein the second blocking member comprises a top surface, a bottom surface and sidewalls between the top surface and the bottom surface, such that rotation of the first blocking member causes the orthopedic anchor to be bounded by a sidewall of the first blocking member and the bottom surface of the second blocking member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of securing an orthopedic plate assembly for bone fixation comprising:
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positioning an orthopedic plate adjacent to bone tissue, the orthopedic plate having an upper surface, a lower surface, and at least one opening that extends between the upper surface and the lower surface, the at least one opening configured and dimensioned to receive an orthopedic anchor, a first blocking member having a blocking position and a non-blocking position, and a second blocking member removably connected to the orthopedic plate and positioned to cover at least a portion of the opening, wherein the second blocking member rests above an uppermost surface of the orthopedic plate; and installing at least one orthopedic anchor through the at least one opening such that the at least one anchor engages the orthopedic plate and the bone tissue, wherein the at least one orthopedic anchor has a head portion, wherein the orthopedic anchor is able to pivot and laterally translate with respect to the orthopedic plate when in an installed position in the opening, wherein a sidewall of the first blocking member contacts a sidewall of the head portion of the at least one orthopedic anchor when the first blocking member is rotated from the non-blocking position to the blocking position, and wherein the second blocking member comprises a top surface, a bottom surface and sidewalls between the top surface and the bottom surface, such that rotation of the first blocking member causes the orthopedic anchor to be bounded by a sidewall of the first blocking member and the bottom surface of the second blocking member. - View Dependent Claims (14, 15, 16, 17)
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18. A method to accommodate subsidence in vertebral bodies comprising:
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positioning an orthopedic plate adjacent to the vertebral bodies, the orthopedic plate having an upper surface, a lower surface, and at least one opening extending between the upper surface and the lower surface, the at least one opening configured and dimensioned to receive an orthopedic anchor, a first blocking member having a head, the first blocking member having a blocking position and a non-blocking position, and a second blocking member removably connected to the orthopedic plate and positioned to cover at least a portion of the opening, wherein the second blocking member rests above an uppermost surface of the orthopedic plate; and inserting at least one orthopedic anchor into the opening in the orthopedic plate to secure the orthopedic plate to at least one of the vertebral bodies, wherein the at least one orthopedic anchor has a head portion, wherein the orthopedic anchor is able to pivot and laterally translate with respect to the orthopedic plate when in an installed position in the opening, wherein at least a portion of a side of the head of the first blocking member is in a same plane as the head portion of the orthopedic anchor so as to restrict lateral translation of the orthopedic anchor, wherein an upper most surface of the second blocking member has a distance of separation from the plate that is greater than a distance of separation between an uppermost surface of the first blocking member and the plate in the installed position, wherein a sidewall of the first blocking member contacts a sidewall of the head portion of the at least one orthopedic anchor when the first blocking member is rotated from the non-blocking position to the blocking position, wherein the first blocking member does not cover the top surface of the head portion of the at least one orthopedic anchor when the first blocking member is in a blocking position, and wherein the second blocking member comprises a top surface, a bottom surface and sidewalls between the top surface and the bottom surface, such that rotation of the first blocking member causes the orthopedic anchor to be bounded by a sidewall of the first blocking member and the bottom surface of the second blocking member. - View Dependent Claims (19, 20)
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Specification