ROD REDUCTION DEVICE AND METHOD OF USE
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a novel rod reducing device including a screw jack mechanism that is moveably engaged with an elongated grasping fork assembly, the screw jack mechanism having an elongated threaded portion, the elongated threaded portion being connected at its most distal end to a rod contact member, which is positioned in sliding circumferential contact with each of the two opposing elongated grasping members and the most proximal end of the elongated threaded portion terminating in a controlling member, which can be activated in a measured and controlled manner. A method of using the device is also provided.
5 Citations
20 Claims
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1. (canceled)
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2. A method of advancing a rod into a housing of a bone anchor comprising:
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coupling a rod reducing device to a bone anchor, the bone anchor having a rod-receiving housing and a bone engaging shaft extending therefrom, the rod reducing device including; a rotatable member, a rod contact member positioned at a distal end of the rotatable member, and a body including first and second elongated grasping members extending therefrom, each of the first and second elongated grasping members having a screw grasping element, the rotatable member threadably coupled with the body, the first and second elongated grasping elements defining a plane, the rotatable member and the rod contact member movable within the plane; securing the rod reducing device to the bone anchor by engaging the first and second elongated grasping elements with the rod-receiving housing so that the rod-receiving housing is disposed between the first and second elongated grasping elements; and rotating the rotatable member thereby causing the rod contact member to move relative to the body within the plane to advance a rod disposed between the first and second elongated grasping members toward the rod-receiving housing. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A kit for reducing a rod, the kit comprising:
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a bone anchor; and a rod reducing device including; a housing defining a longitudinal axis, the housing including first and second grasping members configured to grasp a portion of the bone anchor therebetween, the first and second grasping members defining a plane; a rotatable member extending through the housing along the longitudinal axis; and a rod contact member positioned at a distal end of the rotatable member, the rod contact member translatable along the longitudinal axis in response to rotation of the rotatable member about the longitudinal axis, wherein the rod contact member and the rotatable member are translatable within the plane defined by the first and second grasping members. - View Dependent Claims (10, 11, 12)
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13. A system for reducing a connecting rod, the system comprising:
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a bone anchor; a connecting rod; and a rod reduction device including; a housing defining a longitudinal axis, the housing including first and second grasping members configured to grasp a portion of the bone anchor therebetween, the first and second grasping members defining a plane; a rotatable member extending through the housing along the longitudinal axis; and a rod contact member positioned at a distal end of the rotatable member, the rod contact member translatable within the plane in response to rotation of the rotatable member about the longitudinal axis. - View Dependent Claims (14, 15, 16, 17)
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18. A surgical construct comprising:
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a plurality of bone anchors; a connecting rod; and a plurality of rod reduction devices, each rod reduction device of the plurality of rod reduction devices connectable to a bone anchor of the plurality of bone anchors, each rod reduction device of the plurality of rod reduction devices including; a housing defining a longitudinal axis, the housing including first and second grasping members configured to grasp a portion of the bone anchor therebetween, the first and second grasping members defining a plane; a rotatable member extending through the housing along the longitudinal axis; and a rod contact member positioned at a distal end of the rotatable member, the rod contact member translatable within the plane in response to rotation of the rotatable member about the longitudinal axis. - View Dependent Claims (19, 20)
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Specification