Abstract: A bone fixing device and in particular a device for stabilizing cervical vertebrae is provided, (with) a plate (2, 200) with at least one recess (5) for guiding through a section (15, 61, 62) of a bone screw (6, 60), a connecting element (20, 30), displaceable in the recess, for connecting the bone screw to the plate and a securing device (10, 11) for securing the connecting element against falling out of the recess.

Abstract: A bone anchoring device includes a receiving part for receiving a rod, the receiving part has a first bore coaxial with a longitudinal axis and a second bore, and an anchoring element having a first end for insertion into the bone and a second end positionable within a second bore, the anchoring element being movable relative to the receiving part in limited angular range about the longitudinal axis, the angles lying in a single plane. The bone anchoring device further includes a fixation element cooperating with the receiving part to lock the anchoring element relative to the receiving part. The anchoring element is pivotable relative to the receiving part around one rotational axis transverse to the longitudinal axis.

Abstract: A bone screw includes a thread section of tubular construction having a first end and a second end and a tip at the first end. The tubular thread section has a bone thread on its outer wall, which has a plurality of recesses. The bone screw further includes a holding element with a first section for connection to the thread section and a rod-like second section. The rod-like second section protrudes beyond the second end of the thread section in the inserted state of the holding element. The boric screw also includes a stop for limiting the distance of insertion of the holding element in the thread section. The holding element also includes an element at its free end for engagement with a screw-in tool.

Abstract: A bone anchoring device includes an anchoring element having a shank to be anchored in a bone or a vertebra and a head, a connection element for connecting at least two anchoring elements, a receiving part having a first end receiving the head, wherein the head is pivotable in the receiving part, and a second end comprising a recess for receiving the connection element, a first pressure element which exerts pressure on the head to lock the head in the receiving part, and a second pressure element which exerts pressure on the connection element to press the connection element against the first pressure element. The contour of the surface of at least the first pressure element or the second pressure element facing the connection element deviates from the contour of the surface of the connection element.

Abstract: A dynamic stabilization device for bones, in particular vertebrae, is made with two bone anchoring elements and a rigid rod with a longitudinal axis connecting them. An elastic element is inserted between the two bone anchoring elements. It acts on the bone anchoring elements to exert a force in a direction of the longitudinal axis. Each bone anchoring element has a first section to be anchored in a bone and a second section to be connected to the rod. At least one of the bone anchoring elements is fixedly connected to the rod to prevent translational movement of the rod relative to it. Further, at least one of the bone anchoring elements is a polyaxial bone screw. Also disclosed is a method for stabilizing vertebrae adjacent to a defective intervertebral disc. A dynamic stabilization device is provided. The anchoring elements are attached to two vertebrae on opposite sides of the defective intervertebral disc.

Abstract: A bone screw has a screw head and a threaded shank. An axial bore into which a plurality of radial bores set at a distance from each other open, extends through the threaded shaft. The axial bore is open at the screw head side end, and the radial bores are also open at the radially outer end. The axial bore is closed in an axial direction in the area of the end of the screw shank that lies opposite the screw head.

Abstract: A bone anchoring element (1) for anchoring an external device in a bone is described. A head (2) capable of connection to the external device is provided with a shaft (3) that can be anchored in a bone. A predetermined section of the shaft (3) has a bone thread (5). Moreover, the shaft (3) also has at least one bone thread-free surface (6,7; 11,12; 16,17; 21,22,23) that extends from a first end to a second end of the predetermined section essentially along the direction of the shaft axis. The bone anchoring element (1), thus provided, is pressed or soft-hammered into a hole (8, 28) previously generated in the bone and fixed in the bone by rotation by a predetermined angle. If the bone anchoring element has to be removed this can be achieved by unscrewing it in the standard fashion. The disclosure also describes methods for using the bone anchoring element.

Abstract: A rod-shaped implant element for the connection of bone anchoring elements includes at least one rigid section that is configured to be placed in a receiver member of a bone anchoring element and a flexible section that is adjacent to the rigid section. The flexible section and the rigid section are formed as a continuous one-piece element.

Abstract: A rod-shaped element for use in spinal or trauma surgery, having a first section for connecting to a first bone anchoring element and a second section for connecting to a second bone anchoring element is described. The rod-shaped element also includes a first elastic flexible element that is capable of elastic deformation when a force acts on it transverse to the rod axis. The first section and the second section are capable of shifting relative to each other in the direction of the rod axis. In a stabilization device for use in spinal or trauma surgery, the rod-shaped element allows for a controlled motion of the parts to be stabilized relative to each other so flexural motion is adjusted separately from the adjustment of the mobility in axial direction.

Abstract: An intervertebral implant for insertion between two vertebrae is disclosed. A first part has a first contact surface extending between its two ends a first guide surface extending out from the first contact surface. A second part has a second contact surface extending between its ends, and a second guide surface recessed into the second contact surface. The first guide surface and the second guide surface cooperate so that the first contact surface of the first part can slide relative to the second contact surface of the second part with a translation motion guided by the cooperating structures of the first and second guide surfaces. The height of the intervertebral implant can be altered by shifting the first part and the second part relative to each other by moving the contact surfaces relative to each other by using the cooperating guide surfaces.

Abstract: A stabilization device includes a first bone anchoring element, a second bone anchoring element, and a rod shaped element for connecting the first and the second bone anchoring elements. The rod-shaped element includes a curved section, that undergoes an elastic deformation under the action of a force acting on the rod-shaped element via an anchoring element. The rod-shaped element and the anchoring elements are arranged so that deformation occurs when a force acts in a main direction of motion of bone parts or vertebra relative to each other, whereas a deformation is suppressed when a force acts in a direction that is essentially perpendicular to the main direction of motion.

Abstract: A bone anchoring element comprises a bone anchoring element and a receiving member. The bone anchoring element can be in the form of a screw with a shaft and a first head. A second head is elastically connected to the first head. The second head is arranged in the receiving member such that the second head can swivel. The second head is fixed in the receiving member in an angular resting position. The screw is deflectable from the angular resting position relative to the second head. The second head is elastically connected to the first head such that a restoring force returns the screw to the angular resting position.

Abstract: A space keeper for insertion between two vertebrae which has a variable axial length is provided. The space keeper possesses a sleeve-like first member (2) and a second member (3) guided in the latter and movable relative to the first member in the axial direction for adjusting an overall length. In order that adjustability during operating is facilitated the two members (2, 3) are connected to one another by a lever (7, 8), wherein one centre of motion (16) of the lever is connected to one member (3) and the other centre of motion (18) is connected in terms of action to the other member (2).

Abstract: A bone anchoring device for stabilizing bone segments is provided, with a bone anchoring element which has a shank part and a head, a receiver part for articulated connection of the bone anchoring element to a rod, wherein the receiver part has a first end and a second end opposite this, a bore extending from the first end in the direction of the second end for guiding through the shank part, adjacent to the bore a section for receiving the head, an opening extending from the second end in the direction of the first end for inserting the shank part with the head and a recess extending from the second end in the direction of the first end for forming a channel for receiving the rod, forming two open legs, wherein the receiver part has two slit-shaped recesses extending at the front from the floor of the channel in the direction of the first end.

Abstract: An implant is described having a shaft and a holding element connected therewith for connecting with a rod. A recess is provided in the holding element that includes a U-shaped cross section for accommodation of the rod and two free legs at one end which include an inner thread. A closure element fixes the rod inserted into the U-shaped recess. The closure element has an outer thread cooperating with the inner thread of the legs. An abutment at or in the holding element limits tilting of the closure element about the rod at the time of final tightening of the closure element in the holding element.

Abstract: A connecting element for connecting two rods or screws used for bone or vertebra stabilization is provided. The connecting element comprises a connecting portion, a first portion which can be connected to one of the rods and a second portion which can be connected to the other rod. In order that not only rods parallel to each other, but also those inclined at an angle to each other or oblique can be fixed to each other, the first portion is connected to the connecting portion by a device allowing polyaxial orientation.

Abstract: A fastening assembly is provided for fastening a fixing element, for example a plate, a brace, an angle, a profile, an armature, a retainer or the like to a substructure by means of at least one screw, which can be passed through at least one bore in the fixing element and can be screwed into the substructure. A bushing is arranged in the bore to be able to be swiveled in arbitrary spacial direction. The screw is passed through the bushing. The bushing comprises a seat for at least partially receiving a head of the screw.

Abstract: The present invention concerns a space holder, especially for vertebrae or intervertebral discs for implantation into human or animal organisms, having a cylinder-like body (1) and, at the ends of the cylinder-like body, means (2) provided for connecting to adjacent body parts, said cylinder-like body (1) essentially being formed as a solid cylinder from at least one material that is elastically deformable under the conditions of use, such that the space holder is compressible and extensible in the axial direction and, with reference to means (2) provided at the ends for connecting the space holder to adjacent body parts, can bend about a radial axis of rotation (13).

Abstract: An element with a shank (1) and a holding element (2; 21; 21?) connected to it for connecting to a rod (100) is provided, wherein the holding element (2; 21; 21?) has a recess having a U-shaped cross-section for receiving the rod with two legs (4, 5; 26, 27) open at one end (6, 28) and an inner thread (7; 29) on the open legs and with a locking element (8; 80) with an outer thread (9) in at least one section of its outer wall, wherein the outer thread (9) cooperates with the inner thread (7; 29) of the legs and wherein the locking element has a central bore, characterised in that the locking element (8, 80) has a slit (14) extending substantially in the axial direction through its outer wall.

Abstract: A locking device is provided for securing a rod in a receiving part, in particular a polyaxial bone screw. The locking device has a sleeve-type element with a cylindrical outer face and is dimensioned such that the element is displaceable between the legs of the receiving part. The element has an inner thread for receiving an inner screw. An outer nut can be screwed on to an outer thread of the legs to fix the element. The element acts on a pressure element provided in the receiving part to fix the position of the head of the polyaxial bone screw and the inner screw acts on the rod to fix it. The element is preferably provided with slits. During screwing in of the inner screw, the element splays out against the outer nut and thus effectively prevents loosening or detaching.