Abstract: A polyaxial pedicle screw includes a screwed shaft section for anchoring the pedicle screw in a vertebra, on one axial end of which a shaft head is configured which is coupled in a rotating and/or pivoting manner as well as in a tensile-force transmitting manner to a receiving sleeve for a longitudinal support. The receiving sleeve has a fastening means for selective positional fastening of the receiving sleeve with respect to the shaft section, the fastening means at least consisting of an inlay/pin mounted in the receiving sleeve and acting on the shaft head, and a locking element acting on the inlay/pin. The inlay/pin is configured with attachment points or engagement elements, which are not covered or overlapped by the locking element, for the provisional introduction of a compressive force on the inlay/pin parallel to the locking element.

Abstract: A bone screw includes a screw head and a seating sleeve or tulip on the screw head. The bone screw includes two sleeve flanks having a thread. A seat for a rod for surgical connection of adjacent bone screws is formed between the sleeve flanks. On at least one of the sleeve flanks, a guide surface extending in the circumferential direction for a clamping screw to be screwed into the thread is configured on the run-in side, with the guide surface offset in the radial direction vis-à-vis the thread diameter of the female thread.

Abstract: A medical instrument for holding and handling a surgical securing element has a proximal and a distal end. The surgical securing element includes a securing part and a holding part, and is assembled such that in an assembled disposition, the holding part for a connection element is movable in relation to the securing part. The instrument defines a longitudinal axis and includes a pulling part and, movable in relation to the latter in the direction of the longitudinal axis, a pushing part. The proximal end is temporarily couplable to the securing element in the assembled disposition. The instrument further includes an uncoupling device for actively transferring the instrument from a coupled position, in which the pulling part and the holding part are coupled, to an uncoupled position, in which the pulling part and the holding part are separable from one another.

Abstract: A surgical instrument for manipulating and positioning a surgical rod relative to a surgical implant features two legs rotatably coupled to each other by a hinge. Each leg includes a working end. The working ends come into engagement with the implant upon closing the instrument by rotating the legs around the hinge and pivotally position the instrument relative to the implant around a swivel axis transverse to its longitudinal axis. At least one of the legs includes a contact structure for a surgical rod by which the rod is manipulated and positioned upon swiveling the instrument around the swivel axis relative to a rod seating of the implant. At least one of the legs includes a guide structure for guiding a fixation screw, to be screwed in, for the rod and/or for a tool for screwing in the fixation screw after having positioned the rod in the rod seating.

Abstract: 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.

Abstract: A pedicle screw system, including a pedicle screw having a screw shaft with an external thread and having a screw head supported on the screw shaft in a ball-and-socket joint relationship. The screw head includes a connecting element receptacle for a connecting element of a spinal stabilization system. The pedicle screw system further includes: a bone alignment apparatus and a coupling device for at least one of force-locking coupling and form-locking coupling of the bone alignment apparatus and the pedicle screw in an alignment position in which a mobility of the screw head and the screw shaft is reduced from three degrees of freedom of movement in rotation of the screw head supported on the screw shaft in a ball-and-socket joint relationship therewith by at least one degree of freedom of rotation.

Abstract: A pedicle screw system, including a pedicle screw having a screw shaft with an external thread and having a screw head supported on the screw shaft in a ball-and-socket joint relationship. The screw head includes a connecting element receptacle for a connecting element of a spinal stabilization system. The pedicle screw system further includes: a bone alignment apparatus and a coupling device for at least one of force-locking coupling and form-locking coupling of the bone alignment apparatus and the pedicle screw in an alignment position in which a mobility of the screw head and the screw shaft is reduced from three degrees of freedom of movement in rotation of the screw head supported on the screw shaft in a ball-and-socket joint relationship therewith by at least one degree of freedom of rotation.

Abstract: A medical screw driver includes a shank having a coupling for a handling member for applying torque to the shank. A screw driver portion can be inserted in a pedicle screw head and transmit torque to the screw head. A sleeve is rotatable about the shank and includes a male thread for coupling to a female thread formed at the pedicle screw head. The sleeve has a first sleeve portion having a first engaging portion and a second sleeve portion having a second engaging portion. The first and second engaging portions engage so that the second sleeve portion can transmit torque to the first sleeve portion, and so that the second sleeve portion can be disengaged from the first sleeve portion and drawn off the shank without having to release the first sleeve portion from the pedicle screw head.

Abstract: A surgical fastening element for a spinal column stabilization system includes at least two fastening elements and at least one connecting element, the surgical fastening element including a fastening section, a holding section with a connecting element receptacle, and a fixing element fixable on the holding section for fixing the connecting element in the connecting element receptacle. The fixing element carries a holding down element for holding the connecting element down in the connecting element receptacle.

Abstract: A fixing element for an implant system includes at least two fixing elements that are fixable to bone parts or the like and at least one connecting element that is fixable to the at least two fixing elements. The fixing element includes a distal end fixing part having a fixing section and a seating part which is connected to the fixing part. The seating part includes a connecting element seating for accommodating the connecting element and a fixing element for fixing the fixing element in the connecting element seating. The seating part is formed from a seating part material. The seating part includes at least one reinforcement element which is formed from a reinforcement element material that has at least one of a greater stiffness and strength than the seating part material.

Abstract: A medical instrument for holding and handling a surgical securing element has a proximal and a distal end. The surgical securing element includes a securing part and a holding part, and is assembled such that in an assembled disposition, the holding part for a connection element is movable in relation to the securing part. The instrument defines a longitudinal axis and includes a pulling part and, movable in relation to the latter in the direction of the longitudinal axis, a pushing part. The proximal end is temporarily couplable to the securing element in the assembled disposition. The instrument further includes an uncoupling device for actively transferring the instrument from a coupled position, in which the pulling part and the holding part are coupled, to an uncoupled position, in which the pulling part and the holding part are separable from one another.

Abstract: A polyaxial pedicle screw includes a screwed shaft section for anchoring the pedicle screw in a vertebra, on one axial end of which a shaft head is configured which is coupled in a rotating and/or pivoting manner as well as in a tensile-force transmitting manner to a receiving sleeve for a longitudinal support. The receiving sleeve has a fastening means for selective positional fastening of the receiving sleeve with respect to the shaft section, the fastening means at least consisting of an inlay/pin mounted in the receiving sleeve and acting on the shaft head, and a locking element acting on the inlay/pin. The inlay/pin is configured with attachment points or engagement elements, which are not covered or overlapped by the locking element, for the provisional introduction of a compressive force on the inlay/pin parallel to the locking element.

Abstract: A bearing for a wellbore tool includes a flow device. The flow device may be a pump such as a positive displacement pump or a hydrodynamic pump. In arrangements, a pump stator connects to a wellbore wall. A pump rotor rotates with a drilling motor, and/or a drill string. Rotation of the pump rotor may generate a pressure differential to displace the fluid. The pump may be configured to flow fluid across a gap between a rotating section and a non-rotating section of the bearing. The fluid may be drawn from a wellbore annulus and also returned into the wellbore annulus. The bearing may support thrust loadings and/or a radial loadings. In embodiments, inserts in the bearing may be used to filter the fluid.

Abstract: An analysis system, tool, and method for performing downhole fluid analysis, such as within a wellbore. The analysis system, tool, and method provide for a tool including a spectroscope for use in downhole fluid analysis which utilizes an adaptive optical element such as a Micro Mirror Array (MMA) and two distinct light channels and detectors to provide real-time scaling or normalization.

Abstract: A spectroscope designed to utilize an adaptive optical element such as a micro mirror array (MMA) and two distinct light channels and detectors. The devices can provide for real-time and near real-time scaling and normalization of signals.

Abstract: A bearing for a wellbore tool includes a flow device. The flow device may be a pump such as a positive displacement pump or a hydrodynamic pump. In arrangements, a pump stator connects to a wellbore wall. A pump rotor rotates with a drilling motor, and/or a drill string. Rotation of the pump rotor may generate a pressure differential to displace the fluid. The pump may be configured to flow fluid across a gap between a rotating section and a non-rotating section of the bearing. The fluid may be drawn from a wellbore annulus and also returned into the wellbore annulus. The bearing may support thrust loadings and/or a radial loadings. In embodiments, inserts in the bearing may be used to filter the fluid.

Abstract: An analysis system, tool, and method for performing downhole fluid analysis, such as within a wellbore. The analysis system, tool, and method provide for a tool including a spectroscope for use in downhole fluid analysis which utilizes an adaptive optical element such as a Micro Mirror Array (MMA) and two distinct light channels and detectors to provide real-time scaling or normalization.

Abstract: An analysis system, tool, and method for performing downhole fluid analysis, such as within a wellbore. The analysis system, tool, and method provide for a tool including a spectroscope for use in downhole fluid analysis which utilizes an adaptive optical element such as a Micro Mirror Array (MMA) and two distinct light channels and detectors to provide real-time scaling or normalization.

Abstract: A spectroscope designed to utilize an adaptive optical element such as a micro mirror array (MMA) and two distinct light channels and detectors. The devices can provide for real-time and near real-time scaling and normalization of signals.

Abstract: A spectroscope designed to utilize an adaptive optical element such as a micro mirror array (MMA) and two distinct light channels and detectors. The devices can provide for real-time and near real-time scaling and normalization of signals.