Depuy Synthes Products, Inc.

Synthes Usa, LLC

Fridolin Johannes Schlaepfer

Stefan Saladin

Christian Ammann

Martin Schnider

Helmut Rutschmann

Peter Senn

Martin Hess

Renzo De Franceschi

The present invention is directed an anchor assembly for use in spinal fixation to interconnect a longitudinal spinal rod with a patient's vertebra. The anchor assembly preferably includes a bone anchor, a body with a rod-receiving channel, an insert member (preferably a bushing), and a locking cap with a saddle. The anchor assembly preferably enables in-situ assembly where the bone anchor may be secured to the patient's vertebra prior to being received within the body of the bone anchor assembly. Accordingly, the anchor assembly enables a surgeon to implant the bone anchor without the body to maximize visibility and access around the anchoring site. Once the bone anchor has been secured to the patient's vertebra, the body may be snapped onto the bone anchor and a spinal rod may be inserted into the rod-receiving channel.

Bone fixation assembly

An anchor assembly for use in spinal fixation to interconnect a longitudinal spinal rod with a patient's vertebra. The anchor assembly preferably includes a bone anchor, a body with a rod-receiving channel, an insert member (preferably a bushing), and a locking cap. The anchor assembly enables in-situ assembly where the bone anchor may be secured to the patient's vertebra prior to being received within the body of the bone anchor assembly. Accordingly, the anchor assembly enables a surgeon to implant the bone anchor without the body to maximize visibility and access around the anchoring site. Once the bone anchor has been secured to the patient's vertebra, the body may be snapped onto the bone anchor and a spinal rod may be inserted into the rod-receiving channel.

The present invention is directed an anchor assembly for use in spinal fixation to interconnect a longitudinal spinal rod with a patient's vertebra. The anchor assembly preferably includes a bone anchor (), a body () with a rod-receiving channel, an insert member () (preferably a bushing), and a locking cap with a saddle (). The anchor assembly preferably enables in-situ assembly where the bone anchor may be secured to the patient's vertebra prior to being received within the body of the bone anchor assembly. Accordingly, the anchor assembly enables a surgeon to implant the bone anchor without the body to maximize visibility and access around the anchoring site. Once the bone anchor has been secured to the patient's vertebra, the body may be snapped onto the bone anchor and a spinal rod may be inserted into the rod-receiving channel.

A rod connector () is provided for use in attaching a bone anchor () to a support rod (). The connector () comprises a first portion () defining a clamping means () with an aperture () in which the support rod () can be located, and a second portion () defining a first bore () in which a stem of the anchor () can be inserted. The connector () also comprises a means () defining a pivot axis () enabling it to be connected to an implantation instrument () and orientated in a first position wherein the clamping means () can be located around a support rod () and then rotated around the rod () into a second position relative thereto wherein said bone anchor () can be inserted into the bore () and then secured to an adjacent bone. In addition, the connector defines first and second retaining means () enabling it to be retained by the instrument () respectively in said first position and in its second position.

Rod connector for attaching a bone anchor to a support rod and implantation instrument therefor

An apparatus for connecting a bone anchor to a support rod includes a connector body and a cap. The connector body has a channel to receive and locate the support rod relative to the bone anchor. The cap is moveable longitudinally into a partially installed position in the channel, and snaps into non-threaded engagement with the connector body by rotating from the partially installed position to an installed position without moving axially relative to the connector body. In some embodiments, a sleeve fits over a socket portion of the connector body in a temporary position in which the sleeve permits insertion of the bone anchor into the socket. The sleeve engages the connector body so as to be restrained from axial and rotational movement relative to the connector body when in the temporary position. Tools are provided for installing the connector body, sleeve, cap, and support rod.

Bone support apparatus

A device for dynamic stabilization of bones or bone fragments comprising at least one anchor member for attachment to vertebrae having an opening configured to receive a longitudinal member; and the longitudinal member being viscoelastically deformable and having a predetermined bending resilience.

Growing community of inventors

Hoelstein, Switzerland

Fridolin Johannes Schlaepfer