Silony Medical International Ag

Mimeo Medical Gmbh

Aces Ingenieurgesellschaft Mbh

Ortho Hub Ventures Ug (Haftungsbeschränkt)

Aces Gmbh

Frank Heuer

Frank Thilo Trautwein

Timo Ohnmacht

Ralph Kothe

Ulf Liljenqvist

Michael Putzier

Christoph Mehren

Jorg Franke

Guy Matge

Ralf Riesinger

Axel Hempfing

Lorin M Benneker

Enrico Wirth

Jörg Franke

Guy Matgé

Marc Sanders

A screw element and a process for manufacturing of the screw element for the fixation of bone components and bone fragments are disclosed including a shaft with a bone thread, and a longitudinal central axis extending along the shaft defining a distal direction and a proximal direction. The screw element further includes a head, and a neck area, and a tool attachment point is provided in the head. At least three cantilever elements are attached to the proximal end of the head and said cantilever elements extend in proximal direction beyond the proximal end of the head and are positioned mainly along the longitudinal central axis.

Screw element and method for additive manufacture

A screw element for the fixation of bone components and bone fragments is disclosed having a shaft with an outside screw thread and a longitudinal axis extending along the shaft and defining a distal direction and a proximal direction, and an insertion direction and an opposite removal direction, and has a tool attachment point starting radially inwards and the tool attachment point has a central opening and in the wall of this opening at least five tooth profiles directed radially outwards and mainly parallel to the screw axis directed radially outwards and mainly parallel to the screw axis are formed in the wall of this opening, and for each tooth profile an insertion wall in insertion direction and a removal wall in removal direction can be separated, and that the surface of the insertion wall is greater than the surface of the removal wall.

Tool attachment point with alignment aid for screw elements

An osteosynthesis device for the fixation of bone components and bone fragments is disclosed including a bone anchor having a shaft which extends along a central axis and thereby defines a distal and a proximal direction, and includes at least one blade area with a first and a second wing, and proximally adjoins a neck area and further has a head with at least one spherical segment, and the bone anchor has a central and continuous cannula opening with a diameter. The blade area at least one window with an opening width is provided. The window interacts with the cannula opening, and the head area has an opening with an opening diameter, which also interacts with the cannula opening. The diameter of the cannula opening is smaller than the opening width of the window and the diameter of the cannula opening is also smaller than the opening diameter at the head and the shaft is formed in one piece with the blade area, the neck area and the head with spherical segment.

Blade-like osteosynthesis device

The invention relates to an extension device for a bone anchor, in particular for a bone screw, in particular for a pedicle screw, in particular in minimally invasive spinal surgery, the device having an axial longitudinal direction, a peripheral direction concentric therewith, and a radial direction, wherein the extension device extends in the axial longitudinal direction and engages, by means of a radial projection, an engageable region on the head of the bone anchor in the longitudinal direction and also in the radial direction and can be supported against the head of the bone anchor in the opposite direction so that the extension device can thereby be fixed to the head of the bone anchor so as to be detachable, yet also rigid in the longitudinal direction and non-rotatable.

Extension device for a bone anchor

The invention relates to a device for correcting a bone fracture using bone anchors, in particular bone screws, and extension devices attachable to the bone anchors.

Device for correcting bone fractures

The invention relates to a polyaxial screw including a screw anchor and a fork head which has two arms, is U-shaped in a lateral view and has a receiving opening for a correction element, and including a pressure piece which can be arranged in the fork head between the head of the screw anchor and the correction element, rests on the head of the screw anchor and can be loaded by the correction element.

Polyaxial screw

An osteosynthesis device for the treatment of the spine is disclosed having a fork head which is U-shaped in a side view, and which fork head, in the proximal direction, has two fork legs with an internal thread and in which a connecting rod can be received, and a grub screw is passed through the internal thread, and the fork head is detachably connected to a bone anchor. The bone anchor is pivotably mounted in the ball seat of the fork head, wherein the fork head in the ball seat area has slots open towards the distal side and thereby at least one deflectable leg is formed.

Modular osteosynthesis device for vertebrae

The invention relates to a polyaxial pedicle screw () comprising a screw anchor (), which has a threaded shaft () and a head (), and comprising a fork head (), which is U-shaped in side view and has a receiving opening () for a corrective element, in particular a correcting rod, and two arms (),

Polyaxial pedicle screw

The invention refers to an extension device () for a bone screw () and to a screwdriver instrument () connectable to the extension device (); it is proposed that the screwdriver instrument () comprises a toggle lever mechanism () having a first and a second lever arm (), which are pivotally connected to each other through a common articulation point (), that the first lever arm () may be removably applied, in the area of its free end (), at a first pivot bearing point () on the extension device () and is pivotally mounted and axially supported in the applied state, and that the second lever arm () is pivotally mounted and axially supported at a second pivot bearing point () on the shank, that the first lever arm () is elastically and longitudinally extendable, and that this longitudinal extensibility and a distance between the second pivot bearing point () and the common articulation point () of the lever arms () are adapted to each other in such a way that when manually pivoting the second lever arm () in the direction of a parallel alignment with the axial longitudinal direction (), a dead center is overcome, and the toggle lever mechanism () reaches a tilt-stable position (), in which the shank of the screwdriver instrument () is forced in the axial direction () against the tool application point of the bone screw.

Extension device for a bone screw and screwdriver instrument

The invention relates to a handling instrument for a pedicle screw. The handling instrument is connectable to the pedicle screw in a rigid and rotationally fixed manner. The handling instrument includes a housing part which extends in an axial longitudinal direction and which is tubular or sleeve-shaped in some sections, and a rod part, which is arranged in the outer housing part and which can engage into a tool placement point of the pedicle screw. The housing part has a guide slot, and the rod part has a transverse opening, which extends in a radial direction, in particular in the region of the guide slot of the housing part. A coupling element can be arranged in the transverse opening of the rod part arranged in the housing part, and the coupling element protrudes into the guide slot of the housing part and can be moved in the guide slot in the longitudinal direction in a sliding manner such that the rod part and the housing part can be moved relative to each other in the longitudinal direction while being rotationally fixed to each other by means of the coupling element.

Handling instrument for a bone screw

The invention relates to an extension device () for a bone anchor (), in particular for a pedicle screw having an axial longitudinal direction (), a circumferential direction () concentric thereto and a radial direction (), wherein the extension device () is extended in the axial longitudinal direction () and can be detachably fixed to the head () of the bone anchor (), wherein the extension device () comprises two shell parts () that are separate from each other and extended in the longitudinal direction characterized in that, the extension device further comprises a sleeve-like housing part () that can be slid in the axial longitudinal direction () onto the two shell parts () which are separated from each other and detachably fixed to the head of the bone anchor and, in the applied state, limits and defines a tunnel-like access () to the bone anchor () that extends in the axial direction ().

Extension device for a bone anchor, in particular for a pedicle screw

Osteosynthesis device, in particular a pedicle screw, having a bone anchor, in particular a bone screw, with a shank and a head, and having a fork head which is U-shaped in a side view and which has two arms at a proximal end area and is formed in one piece, wherein the head of the bone anchor is mounted pivotably on a distal end area of the fork head directed away from the arms, wherein the fork head has, at the distal end area, a receiving opening for the head of the bone anchor, which receiving opening is delimited in the radial direction by spring portions, wherein the spring portions are delimited radially inwards by the receiving opening and radially outwards by an annular groove arranged concentrically with respect to the receiving opening, said annular groove forming a seat for a securing element, wherein the head of the bone anchor is inserted into the receiving opening from the direction of the distal end of the fork head.

Osteosynthesis device

The invention relates to a handling instrument for connecting to a bone anchor, comprising a first outer and a second inner sleeve-shaped housing part with a respective longitudinal direction, a first housing part internal thread which extends in the respective longitudinal direction, and a second housing part external thread. The handling instrument is characterized by a threadless section of the first housing part in the region of the internal thread, said section extending distally from a proximal longitudinal end of the internal thread in the longitudinal direction and in a circumferential direction, and the handling instrument is characterized in that the outer thread of the second housing part is formed only in the region of the extension of the threadless section such that the second housing part can be plugged into the first housing part in the longitudinal direction in a translational manner at a suitable rotational position and can subsequently be screwed into the internal thread of the first housing part.

Handling instrument for a bone anchor

Disclosed is a device for carrying out a distraction and/or compression of vertebral bodies. The device includes a first and a second extension part with a longitudinal direction, each of which part can be secured on a bone anchor, and having a spreading arrangement for the extension parts, wherein the spreading arrangement has a first receptacle for detachable securing on the first extension part, and the spreading arrangement has at least two arms which form a scissor mechanism, which arms can pivot orthogonally to the longitudinal direction, wherein one end of the first arm is pivotally arranged in the region of the first receptacle and the other end is pivotally connected to the second arm, and the second arm is pivotally connected to a second receptacle which is designed for detachable securing on the second extension part, and the spreading arrangement has a threaded spindle and an inner threaded part which are arranged in such a way that the arms are pivoted with respect to one another when the threaded spindle is screwed in or out in relation to the inner threaded part, the pivoting being such that the receptacles are moved towards each other or away from one another.

Device for carrying out a distraction for a compression of vertebral bodies during a spinal surgery

Disclosed is a device for carrying out a distraction and/or a compression of vertebral bodies during spinal surgery, said device comprising a first and a second sleeve-shaped extension part, each part having a longitudinal direction and each of which parts can be secured on a bone anchor in a detachable but rigid and rotationally fixed manner. The device is characterized by a first eccentric bearing part and a second counter bearing part, which parts can be positioned on the first and on the second extension part respectively in corresponding positions, and in that, at least the eccentric bearing part can be rotated relative to the first extension part about the longitudinal direction of said extension part, such that due to the eccentricity, the first bearing part can be brought into contact with the second counter bearing part and thus a bearing position is formed for forming a pivot joint between the two extension parts in order to perform the distraction or compression.

Growing community of inventors

Filderstadt, Germany

Frank Heuer