Orthopedic plating assembly for bone fixation and subsidence
First Claim
1. An orthopedic plate assembly for bone fixation, comprising:
- at least one orthopedic anchor having a head portion;
an 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 the 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 faces the orthopedic anchor and in the blocking position, the cut-out portion faces away from the orthopedic anchor; and
a second blocking member, the 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,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, andwherein the first blocking member and the second blocking member cooperate to prevent the at least one orthopedic anchor from uninstalling from the 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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Accused Products
Abstract
In an exemplary embodiment, the present invention provides an orthopedic plating assembly for bone fixation that includes 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 assembly, in one embodiment, includes an orthopedic plate and at least one orthopedic anchor, the orthopedic anchor capable of rotating and translating with respect to the plate. The assembly further includes a first blocking member and a second blocking member, the blocking members cooperate to prevent the at least one orthopedic anchor from uninstalling from an installed position.
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Citations
16 Claims
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1. An orthopedic plate assembly for bone fixation, comprising:
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at least one orthopedic anchor having a head portion; an 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 the 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 faces the orthopedic anchor and in the blocking position, the cut-out portion faces away from the orthopedic anchor; and a second blocking member, the 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, 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, and wherein the first blocking member and the second blocking member cooperate to prevent the at least one orthopedic anchor from uninstalling from the 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)
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11. An orthopedic plate assembly for bone fixation, comprising:
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at least one orthopedic anchor having a head portion; an 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 the orthopedic anchor; a first blocking member, the first blocking member having a blocking position and a non-blocking position; and a second blocking member, the second blocking member removably connected to the orthopedic plate and positioned to cover at least a portion of the opening, 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, 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 (12, 13, 14, 15)
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16. An orthopedic plate assembly for bone fixation, comprising:
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at least one orthopedic anchor having a head portion; an 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 the orthopedic anchor; a first blocking member, the first blocking member having a head, the first blocking member having a blocking position and a non-blocking position; and a second blocking member, the 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, 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, 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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Specification