Abstract: A bone anchoring device includes an anchoring element having a shank to be anchored in a bone or a vertebra, a receiving part connected to the shank the receiving part having a first end opposite to the shank and a second end facing the shank, a longitudinal axis passing through the two ends, a bore coaxial with the longitudinal axis extending from the first end through at least a portion of the receiving part and a substantially U-shaped recess for receiving a rod The U-shaped recess forms two free legs extending in the direction of the first end, the legs are provided with an internal thread. A locking device for securing the rod in the receiving part is provided which includes an external thread cooperating with the internal thread.

Abstract: An element with a shank (1) and a holding element (2) connected to it for connecting to a rod (100) is provided, wherein the holding element (2) has a recess (3) having a U-shaped cross-section for receiving the rod (100) with two legs (4, 5) open at one end (6) and an inner thread (7) on the open legs (4, 5) and a locking element (9) with an outer thread (8) which cooperates with the inner thread of the legs, wherein the inner thread (7) of the legs and the outer thread (8) of the locking element are constructed with a flat thread in which the two flanks (7a, 7b; 8a, 8b)) enclose an angle of 90° in each case with the screw axis (S, M). This prevents splaying of the open legs when the locking element is screwed in. The flat thread is easy to produce.

Abstract: An instrument for assembling a bone anchoring device includes a shank with a shaft section to be anchored in a bone and a engagement end, a head being separate from the shank and having a through bore, and a receiving part having a first end, a second end and a longitudinal bore extending from the first to the second end, the head being positionable within the bore at the second end. The instrument includes a holding portion arranged to hold a pin, which has a rod section with a length and a diameter suited to fit and extend at least through the bore of the head, and which has a free end portion extending from the rod section such as to project from the bore of the head when the pin is inserted, and configured to engage with the engagement end of the shank.

Abstract: A bone screw is created, with a thread section (1) with a tip (6) at a first end and a head (8) for engaging with a screwdriver at the opposite second end, which serves as traction element to connect shattered or split off parts of bones to one another. So that fusion of the screw with the bones can take place, the thread section (1) is constructed as tubular and its wall has a plurality of recesses.

Abstract: A shaft for anchoring in a vertebra or bone section is connected to a receiving part which serves to connect to a rod having a pre-determined diameter (D). The receiving part provides a U-shaped recess, forming a channel for the reception of the rod, and two legs. The legs are free on their ends and have a thread that cooperates with a securing element to fix the rod in the receiving part. When inserted into the receiving part, the rod surface facing an end surface is at a pre-determined distance (A) in an axial direction from the end surface. The thread of the legs extends from the end surface a distance that is smaller than or equal to the pre-determined distance (A). Also, an undercut is provided adjacent to the thread whose edge farthest away from the thread is located at a distance (B) from the end surface.

Abstract: A bone screw is provided, with a thread section (2) of tubular construction having a tip (3) at its first end and a second end opposite the latter. The tubular thread section (2) comprises a bone thread (22) on its outer wall, and the wall of the thread section (2) comprises a plurality of recesses (21). The bone screw further includes a holding element (4, 6) with a first section (41, 61) for connection to the thread section (2) and with a rod-like second section (43, 63) which in the inserted state of the holding element (4, 6) protrudes beyond the second end of the thread section (2). A stop is provided for limiting the distance of insertion of the holding element (4, 6) in the thread section (2). The holding element (4, 6) comprises an element (44, 64) at its free end for engagement with a screw-in tool.

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 device has an anchoring element, a receiving portion, and a pressure element. The anchoring element includes a shank to be anchored in a bone or a vertebra and a head, the head having an exterior surface with a spherical segment-shaped portion. The shank and the head are separate parts. The receiving portion includes a first end, a second end, a longitudinal axis passing through the two ends, a bore coaxial with the longitudinal axis, and a first region adjacent to the second end for receiving a spherical segment-shaped section of the head. The pressure element exerts pressure on the head to lock the head in the receiving portion. The head has a hollow inner portion to receive a free end portion of the shank and wherein the head and the end portion are formed such that the end portion can be elastically clamped by the head.

Abstract: An implant is described having a shaft (1) and a holding element (3; 30) connected therewith for connecting with a rod (100). A recess is provided in the holding element. The recess has a U-shaped cross section for accommodation of the rod and two free legs (7, 8; 32, 33) at one end which include an inner thread (9; 34). A closure element (20; 36) 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 is provided at or in the holding element (3; 30) to limit tilting of the closure element about the rod at the time of final tightening of the closure element in the holding element. As a result thereof it is possible to keep the wall thickness of the receiver member small in spite of the large forces acting at the time of final tightening. The invention is applicable to both monoaxial screws and polyaxial screws as well as bone hooks.

Abstract: An implant for permanent or temporary introduction into the human or animal body includes a base body for connecting spaced body parts and/or other implant components, the implant having a load axis, along which primarily tensile and/or compressive forces are transmissible, with at least one rotary axis formed at right angle to the load axis, the rotary axis facilitating at least limited bending of the base body about the rotary axis, especially of the ends of the base body arranged along the load axis, with the at least one rotary axis being defined by a swivel joint, which is formed in one-piece at the base body.

Abstract: A bone screw is created, with a thread section with a tip at a first end and a head for engaging with a screwdriver at the opposite second end, which serves as traction element to connect shattered or split off parts of bones to one another. So that fusion of the screw with the bones can take place, the thread section is constructed as tubular and its wall has a plurality of recesses.

Abstract: An anchoring element for use in spinal or bone surgery is described. A shaft (1) for anchoring in a vertebra or bone section is connected to a receiving part (22) which serves to connect to a rod (100) having a pre-determined diameter (D). The receiving part (22) provides a U-shaped recess (26) forming a channel for the reception of the rod and two legs (27, 28). The legs are free on their end and have a thread (30, 31) that cooperates with a securing element to fix the rod in the receiving part. When inserted into the receiving part, the rod surface facing the end surface (29) is at a pre-determined distance (A) in an axial direction from the end surface (29). The thread (30, 31) of the legs extends from the end surface a distance that is smaller than or equal to the pre-determined distance (A). Also, an undercut (33, 34) is provided adjacent to the thread whose edge farthest away from the thread is located at a distance (B) from the end surface. Distance (B) is larger than the pre-determined distance (A).

Abstract: A pelvis fixing device with a screw for the latter is provided. The screw comprises a screw element with a threaded shank and a head. Also provided is a holder which receives the head and which comprises a lower portion facing towards the shank side and an upper portion facing away from the shank side. The two portions encompass a rod. Also provided is a screw element for connecting the two portions and simultaneously fixing the rod. The pelvis fixing device comprises at least two such screws and at least one rod connecting them.

Abstract: A bone anchoring device has an anchoring element, a receiving portion, and a pressure element. The anchoring element includes a shank to be anchored in a bone or a vertebra and a head, the head having an exterior surface with a spherical segment-shaped portion. The shank and the head are separate parts. The receiving portion includes a first end, a second end opposite to the first end, a longitudinal axis passing through the two ends, a bore coaxial with the longitudinal axis, and a first region adjacent to the second end for receiving a spherical segment-shaped section of the head. The pressure element exerts pressure on the head to lock the head in the receiving portion. The head has a hollow inner portion to receive a free end portion of the shank and wherein the head and the end portion are formed such that the end portion can be elastically clamped by the head.

Abstract: A bone screw includes a tubular body including a wall having a bone thread in at least a portion of an outer portion of the wall, an open first end and an open second end. A plurality of cutting teeth is provided at the open first end. An engagement structure is provided at the second end for engagement with a screwing-in tool. The wall in the vicinity of the plurality of cutting teeth is thicker in a radial direction than the wall adjacent to the plurality of cutting teeth.

Abstract: A bone screw includes a tubular body including a wall having a bone thread in at least a portion of an outer portion of the wall, an open first end and a second end. A plurality of cutting teeth is provided at the open first end, and a head is provided at the second end. An insert in the tubular body is configured to guide a wire therethrough.

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: A bone screw having a screw member possessing a threaded section and a head and a receiving part at the head end for receiving a rod to be connected to the bone screw is provided. The receiving part has on open first bore and a substantially U-shaped cross-section having two free legs provided with a thread. Furthermore, the receiving part has a second bore on the end opposite to the first bore whose diameter is greater than that of the threaded section and smaller than that of the head. On the bottom of the first bore a seat for the head is provided. In order that the screw member can be pivoted to at least one side by an enlarged angle, the edge bounding the free end of the second bore viewed relative to the axis of the first bore is of asymmetric construction.

Abstract: A stabilization device for bones or vertebrae comprises a substantially cylindrical elastic element. The elastic element has a first end and a second end opposite to the first end. An elastic section extends between the first end and the second end. The elastic section includes at least first and second helical coils. The first and second helical coils are arranged coaxially so that the first helical coil extends at least in a portion between the second helical coil. The elastic element may form, for example, a portion of a rod, bone anchoring element, or plate.

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).