Aesculap Ag

Aesculap Implant Systems, LLC

Andrea Peukert

Alexander Haas

Matthew Kovach

Jens Beger

Stephan Lindner

Sven Krüger

Andrew Dauster

Paul Weaver

Fabian Hoefer

David Wimberley

Michael Rauschmann

Bronek Boszczyk

Scott Leary

David W Wimberley

A bone screw includes a screw shaft with an external thread. The screw shaft anchors the bone screw in a bone. A proximal end of the screw shaft includes a screw head. The ratio between the outer thread diameter and the thread core diameter increases toward the screw head in a proximal screw shaft portion or in the area of the thread's run-out.

Bone screw

A medical apparatus for parallel alignment of at least two medical instruments for holding and manipulating a surgical fastening element is described. The fastening element includes a fastening part and a holding part for a connection element, the holding part being movably mounted relative to the fastening part in a mounting position. The medical instruments have a distal end couplable to the fastening element. The apparatus includes at least two coupling devices, each defining a coupling longitudinal axis, for temporary coupling with proximal ends of the at least two medical instruments, wherein the apparatus comprises a frame, wherein the coupling longitudinal axes of the at least two coupling devices are alignable parallel to one another. Improved sets of medical instruments and improved spine stabilization systems are also described.

Spine stabilization system, set of medical instruments and medical apparatus for parallel alignment of medical instruments

A polyaxial pedicle screw includes a threaded shaft portion for anchoring the pedicle screw in a vertebra, the pedicle screw having one axial end provided with a shaft head which is coupled to a mounting sleeve for a longitudinal beam in a rotatable and/or pivotable manner, including a fixing device for the selective positional fixation of the mounting sleeve with respect to the shaft portion. The fixing device includes a locking element as well as a counterforce part which is formed so as to be separate from the pedicle screw and counteracts the holding force of the locking element, preferably a grub screw or threaded nut, and is designed and/or retained in such a manner that the holding force of the locking element can be selectively released by means of the counterforce part, viz. is without any effect.

Readjustable polyaxial pedicle screw

Instruments and methods for inserting a spinal fixation rod include various components for inserting a rod with visual guidance. One kit includes a plurality of hollow elongated extension tubes and rod templates. The tube connectors connect the extension tubes in series. Another kit includes a rod guidance instrument having a sleeve. A guide member is attachable to the midsection of the sleeve, and a spinal fixation rod is attachable to the distal end of the sleeve. A method for inserting a spinal fixation rod into a plurality of rod receiving implants includes the steps of contouring a fixation rod to conform to a predetermined shape, contouring a guide member to match the shape of the contoured rod, and guiding the fixation rod into a rod receiving implant by maneuvering the guide member through a guide slot representing the location of the rod receiving implant.

Percutaneous rod insertion system and method

A fixation plate system includes a plate with elongated slots, and first and second anchors for attaching the plate to vertebrae. The first and second anchors have different head configurations that are selected by the surgeon to control how settlement occurs at each fused segment. The head of the first fastener is insertable in any of the slots and resists translation. The head of the second fastener is insertable in any of the slots in free sliding engagement to allow translation of the head in that slot. In one method of use, the surgeon selects a segment where settling needs to be limited, and uses the first fastener to fix the plate near the segment and limit settling at that segment. The first and second fasteners have a built-in spring that assists in securing the fasteners in the plate.

Semi-dynamic fixation plate system

In order to improve a bone screw with a shaft defining a longitudinal axis and with a head which can be brought into engagement with a bone screw receiving means of a bone plate for the releasable connection of the bone screw to the bone plate, wherein a securing element for securing a connection between the bone screw and the bone plate is provided, wherein the bone screw can be brought from a position of engagement, in which the bone screw is held on the bone plate, into a release position, in which the bone screw can be released from the bone plate, wherein the securing element can be brought from a non-securing position, in which the bone screw can be brought into the release position, into a securing position for securing the connection between the bone screw and the bone plate, in which the bone screw takes up the position of engagement, such that a bone plate can be fixed to bone parts more easily and more securely it is suggested that the securing element be supported on the bone screw so as to be movable.

In an intervertebral implant having an abutment element for abutment on at least one vertebral body, in order to be able to apply pulling forces to the abutment element without the risk of damage to the abutment element, it is proposed that the abutment element carry at a side edge a pull element which extends along the side wall of the abutment element and is held on the abutment element by pull members extending at the sides of the abutment element in the direction towards the opposite side edge, the pull element being made of a material whose tensile strength is greater than the tensile strength of the material of the abutment element, and that an interspace for receiving a handling instrument engaging the pull element from behind be arranged at least in a section along the pull element between the pull element and the abutment element. A handling instrument for handling such an intervertebral implant is also described.

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Tuttlingen, Germany

Andrea Peukert