Depuy Synthes Products, Inc.

Synthes Gmbh

Brian Dec

David Rathbun

Tom Keyer

Dustin M Harvey

Michael D Daubs

Michael Daubs

A reduction sleeve for facilitating insertion of a spinal rod into a rod-receiving channel formed in a bone fixation element. The reduction sleeve may include a through-bore sized and configured to receive the bone fixation element and a substantially transverse channel sized and configured to receive the spinal rod. The channel being substantially aligned with the rod-receiving channel formed in the bone fixation element so that, once the bone fixation element has been inserted into the reduction sleeve, the spinal rod can pass through the aligned channels. The reduction sleeve may also include at least one break-off point or region for facilitating breaking and removal of the reduction sleeve once the spinal rod has been clamped into the rod-receiving channel of the bone fixation element. The reduction sleeve may also include a plurality of threads formed thereon for engaging a reduction instrument, an alignment mechanism so that the bone fixation element can only be inserted into the reduction sleeve when the rod-receiving channels are aligned, and an inwardly projecting protrusion formed on the inner surface of the reduction sleeve so that, once inserted, the projection contacts a top surface formed on the bone fixation element.

Reduction sleeve

A bone fixation assembly includes a plurality of bone fixation elements that each include a bone anchor configured to be implanted into underlying bone, such as a vertebra. Each bone anchor is received in an anchor seat, and the anchor seats are joined by a fixation rod so as to operatively couple and fix the position and orientation of the vertebrae relative to each other. The bone anchor is free to rotate relative to the anchor seat, and is also free to pivot in a desired direction relative to the anchor seat.

Uni-planer bone fixation assembly

Spinal rod reduction apparatuses, systems, and methods are provided. In various examples, a rod reduction apparatus includes a first threaded member including an engagement feature configured to selectively anchor the first threaded member to the implantable screw assembly. A second threaded member is configured to threadably engage with the first threaded member. The second threaded member is axially movable with respect to the first threaded member with rotation of the second threaded member. A spinal rod urging member is axially movable with the second threaded member. The urging member includes a bearing surface that is configured to selectively abut the spinal rod and selectively urge the spinal rod toward the implantable screw assembly with rotation of the second threaded member in a first rotational direction.

Rod reducer apparatus and method for spinal corrective surgery

Devices and methods for facilitating insertion of a spinal rod into a rod-receiving channel formed in a bone fixation element are described herein. In some embodiments, a reduction sleeve can include a through-bore sized to receive the bone fixation element and a transverse channel sized to receive the spinal rod and substantially aligned with the rod-receiving channel formed in the bone fixation element. The reduction sleeve can also include at least one break-off point for breaking and removal of the reduction sleeve The reduction sleeve can also include a plurality of threads for engaging a reduction instrument, an alignment mechanism so that the bone fixation element can only be inserted into the reduction sleeve when the rod-receiving channels are aligned, and an inwardly projecting protrusion formed on the inner surface of the reduction sleeve so that, once inserted, the projection contacts a top surface formed on the bone fixation element.

Spinal rod reduction apparatuses, systems, and methods are provided. In various examples, a rod reduction apparatus includes a first threaded member () including an engagement feature (A,B,) configured to selectively anchor the first threaded member to the implantable screw assembly. A second threaded member () is configured to threadably engage with the first threaded member. The second threaded member is axially movable with respect to the first threaded member with rotation of the second threaded member. A spinal rod urging member () is axially movable with the second threaded member. The urging member includes a bearing surface () that is configured to selectively abut the spinal rod and selectively urge the spinal rod toward the implantable screw assembly with rotation of the second threaded member in a first rotational direction.

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Exton, PA, United States of America

Brian Dec