Abstract: An extension device for a bone anchor is provided, where the bone anchor includes an anchoring section for anchoring to a bone and a receiving part connected to the anchoring section. The receiving part includes a central axis and a channel for receiving a rod, where sidewalls of the channel form two free legs. The extension device includes a first sleeve with a first sleeve axis that is coaxial with the central axis, where the first sleeve is configured to be detachably coupled to the receiving part. The extension device includes a second sleeve with a second sleeve axis, where the second sleeve is positioned within the first sleeve. The first sleeve is configured to be coupled to the receiving part to inhibit translational movement of the first sleeve relative to the receiving part along the central axis.

Abstract: A polyaxial bone anchoring device includes a bone anchoring element having a shank and a head, a receiving part including a rod receiving portion, and a head receiving portion having a first end and an open second end with a bounding edge, wherein the head receiving portion is configured to be rotatably connected to the rod receiving portion and is flexible for introduction and clamping of the head, and a locking ring configured to be mounted around the head receiving portion, wherein the head is insertable into the head receiving portion from the second end, is pivotable in the head receiving portion at a larger maximum pivot angle relative to the receiving part at a first location of the bounding edge, and can be locked at an angle relative to the receiving part by compressing the head receiving portion with the locking ring.

Abstract: A rod-shaped implant for stabilizing bone structures, in particular the spinal column includes a rod-shaped implant having a rod-shaped member with a first end and a second and a longitudinal axis. The rod-shaped member is at least partly made from a plastic material exhibiting flexibility and includes a longitudinal bore. A reinforcing rod is accommodated in the bore and is made from a material which is more rigid than the material of the rod-shaped member itself. The reinforcing rod is slidable in the bore.

Abstract: An insert for a tool for assembling a bone anchoring device including a bone anchoring element with a head and a shaft to be anchored in bone and a receiving part, the insert configured for insertion into a holder of the tool, the insert including an elongate body with a longitudinal axis, wherein a first recess configured to receive a shaft of a bone anchoring element extends on a surface of the elongate body along the longitudinal axis, has a first diameter, and is oriented towards a first radial direction relative to the longitudinal axis, wherein a second recess configured to receive a shaft of a bone anchoring element extends on a surface of the elongate body along the longitudinal axis, has a second diameter greater than the first diameter, and is oriented towards a second radial direction relative to the longitudinal axis different than the first radial direction.

Abstract: A receiving part for coupling a rod to a bone anchoring element includes a receiving part body having a first end, a second end, a channel for receiving a rod, an accommodation space for accommodating a head of a bone anchoring element, and an opening at the second end for inserting the head, and a pressure element configured to be positioned at least partly in the accommodation space, the pressure element having a first end, a second end, a central axis, and a flexible portion to clamp an inserted head. The flexible portion has a first slit spaced apart from the second end of the pressure element that extends at least partially around the central axis, and a second slit that extends from the second end of the pressure element into the first slit. The first slit extends away from the second slit and is longer than the second slit.

Abstract: A receiving part for coupling a rod to a bone anchoring element includes a receiving part body including a rod receiving portion having a channel for receiving a rod, and a head receiving portion for accommodating a head of a bone anchoring element, the head receiving portion having an open end and being flexible for inserting and clamping of the head; and a locking ring around the head receiving portion, wherein in a pre-locking position, a spring portion on one of the locking ring or the receiving part body engages a corresponding portion on the other one of the locking ring or the receiving part body, and the locking ring exerts a first force onto the head receiving portion, and wherein in a locking position, the locking ring exerts a second force greater than the first force onto the head receiving portion to lock the head therein.

Abstract: A receiving part of a polyaxial bone anchoring device includes a first member with a top end and a bottom end, a central axis, a head receiving portion having an inner wall defining a passage at the bottom end for introducing a head of a bone anchoring element, and a channel at the top end for receiving a rod, a second member having a bore and being connectable to the first member at the bottom end of the first member; and at least one clamping member configured to be positioned at or near the bottom end of the first member and to protrude into the passage. The second member is movable relative to the first member from a first position wherein the clamping member is movable radially, to a second position wherein the clamping member is prevented from moving, to hold a head of a bone anchoring element therein.

Abstract: A bone anchoring device includes a bone anchoring element having a shaft for anchoring in the bone and a head; and a receiving part for coupling a rod to the bone anchoring element. The receiving part includes a first portion with a first end and a second end and a U-shaped recess for receiving the rod, the recess extending from the first end in the direction of the second end thereby forming two free legs and a second portion at the side of the second end opposite to the first end for accommodating the head, the second portion having a free end and being flexible so as to allow introduction and clamping of the head. The bone anchoring device also includes a locking ring embracing the second portion. The head is locked by means of exerting pressure with the rod onto the locking ring resulting in compression of the second portion of the receiving part and wherein the locking ring is mounted to the receiving part from the free end of the second portion.

Abstract: A bone anchoring device includes a receiving part including a rod receiving portion with a first end, a second end, and a U-shaped recess for receiving a rod, the recess defining two free legs, and a head receiving portion at the second end for introducing and clamping the head, and a locking ring configured to be arranged around the head receiving portion, the locking ring including an engagement structure for engagement with a tool, the engagement structure defining a width of the locking ring that is greater than a greatest width of the rod receiving portion, wherein the locking ring can assume a locking position exerting a greatest compressive force on the head receiving portion of the receiving part to lock an inserted head, and wherein the locking ring is movable out of the locking position towards the first end of the rod receiving portion.

Abstract: A bone anchoring device includes a bone anchoring element including a shaft and a head, a receiving part for coupling a rod to the bone anchoring element, the receiving part including a rod receiving portion having a channel with a bottom for receiving a rod, and a head receiving portion to allow introduction and clamping of the head, and a locking ring including at least one projection, wherein the rod receiving portion has at least one cutout, wherein when the head is not locked, the projection is configured to extend through the cutout and into the channel, and wherein a first engagement portion is provided on the locking ring for engaging a second engagement portion at an inner wall of the cutout to hold the locking ring in a first position where the head is pivotable in the head receiving portion but is prevented from removal therefrom.

Abstract: A bone anchoring element includes an anchoring section for anchoring in the bone and a receiving part connected to the anchoring section. The receiving part includes an opening suitable for accommodation of a stabilization rod having a rod axis, the opening being limited along the rod axis by two side walls. The side walls include guides orientated along the rod axis for guiding at least one connection rod therethrough.

Abstract: An extension device for a bone anchor is provided, wherein the bone anchor comprises an anchoring section and a receiving part connected to the anchoring section, the receiving part having a central axis, the extension device comprising a first sleeve with a first sleeve axis that is coaxial to the central axis and being configured to be coupled to and decoupled from the receiving part; a second sleeve with a second sleeve axis coaxial to the central axis, being positioned within the first sleeve and positionable relative to the first sleeve along the central axis, and being configured to be coupled to and decoupled from the receiving part; a locking member that, in a first configuration, inhibits decoupling of the first sleeve or the second sleeve from the receiving part when the other one of the first sleeve or the second sleeve is coupled to the receiving part.

Abstract: A receiving part for coupling a rod to a bone anchoring element includes a receiving part body including a rod receiving portion having a channel for receiving a rod, and a head receiving portion for accommodating a head of a bone anchoring element, the head receiving portion having an open end and being flexible for inserting and clamping of the head; and a locking ring around the head receiving portion, wherein in a pre-locking position, a spring portion on one of the locking ring or the receiving part body engages a corresponding portion on the other one of the locking ring or the receiving part body, and the locking ring exerts a first force onto the head receiving portion, and wherein in a locking position, the locking ring exerts a second force greater than the first force onto the head receiving portion to lock the head therein.

Abstract: A bone anchoring device includes a receiving part including a rod receiving portion with a first end, a second end, and a U-shaped recess for receiving a rod, the recess defining two free legs, and a head receiving portion at the second end for introducing and clamping the head, and a locking ring configured to be arranged around the head receiving portion, the locking ring including an engagement structure for engagement with a tool, the engagement structure defining a width of the locking ring that is greater than a greatest width of the rod receiving portion, wherein the locking ring can assume a locking position exerting a greatest compressive force on the head receiving portion of the receiving part to lock an inserted head, and wherein the locking ring is movable out of the locking position towards the first end of the rod receiving portion.

Abstract: A bone anchoring element includes an anchoring section for anchoring in the bone and a receiving part connected to the anchoring section. The receiving part includes an opening suitable for accommodation of a stabilization rod having a rod axis, the opening being limited along the rod axis by two side walls. The side walls include guides orientated along the rod axis for guiding at least one connection rod therethrough.

Abstract: A bone anchoring device includes a bone anchoring element having a shaft for anchoring in the bone and a head; and a receiving part for coupling a rod to the bone anchoring element. The receiving part includes a first portion with a first end and a second end and a U-shaped recess for receiving the rod, the recess extending from the first end in the direction of the second end thereby forming two free legs and a second portion at the side of the second end opposite to the first end for accommodating the head, the second portion having a free end and being flexible so as to allow introduction and clamping of the head. The bone anchoring device also includes a locking ring embracing the second portion. The head is locked by means of exerting pressure with the rod onto the locking ring resulting in compression of the second portion of the receiving part and wherein the locking ring is mounted to the receiving part from the free end of the second portion.

Abstract: An extension device for a bone anchor is provided, wherein the bone anchor comprises an anchoring section (100) for anchoring in a bone and a receiving part (200, 200?) connected to the anchoring section, the receiving part comprising a central axis (C) and a channel (204) for receiving a rod, wherein sidewalls of the channel form two free legs (205a, 205b), the extension device comprising a first sleeve (1, 1?, 1?) with a first sleeve axis (c) that is coaxial with the central axis (C), wherein the first sleeve (1, 1?, 1?) is configured to be detachably coupled to the receiving part (200, 200?) and a second sleeve (2, 2?, 2?, 2??) with a second sleeve axis, wherein the second sleeve is positioned within the first sleeve (1, 1?, 1?), wherein the first sleeve (1, 1?, 1?) is configured to be coupled to the receiving part (200, 200?) such as to inhibit a translational movement of the first sleeve relative to the receiving part along the central axis and wherein the second sleeve (2, 2?, 2?, 2??) is config

Abstract: A rod insertion system and at least two bone anchors including: a rod guide configured to accommodate a spinal stabilization rod therein; a holding device including a clamping portion configured to hold a portion of the rod guide; and an adapter configured to moveably support the holding device. The holding device is configured to move and pivot along an adapter such that the rod guide is positioned proximal to a rod channel of one of the at least two bone anchors. In a first state, the rod guide is fixed to the holding device by the clamping portion, and, in a second state in which the holding device supports the portion of the rod guide, the clamping portion is released from the portion of the rod guide to permit the orientation of the rod guide relative to the holding device to be polyaxially adjusted.

Abstract: A rod insertion device for inserting a rod into a bone anchor includes a shaft having a first end, a second end, and a shaft axis; a rod holding member connected to the first end of the shaft and configured to pivot relative to the shaft about a pivot axis and to receive a portion of a rod therein, the rod holding member comprising at least two recesses in an outer surface of the rod holding member and separated from each other along a circumferential direction about the pivot axis; a handle at the second end of the shaft; a locking member configured to lock an inserted rod in the rod holding member; and a detent member configured to selectively engage the rod holding member to latch a pivot position of the rod holding member relative to the shaft.

Abstract: A receiving part for coupling a rod to a bone anchoring element includes a receiving part body including a rod receiving portion having a channel for receiving a rod, and a head receiving portion for accommodating a head of a bone anchoring element, the head receiving portion having an open end and being flexible for inserting and clamping of the head; and a locking ring around the head receiving portion, wherein in a pre-locking position, a spring portion on one of the locking ring or the receiving part body engages a corresponding portion on the other one of the locking ring or the receiving part body, and the locking ring exerts a first force onto the head receiving portion, and wherein in a locking position, the locking ring exerts a second force greater than the first force onto the head receiving portion to lock the head therein.