Pedicle screw system and spinal stabilization system
AssigneeAesculap AG
InventorsJens Beger, Claudia Stoerk, Stefan Gassner, Sven Krüger
Life of this patent
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Abstract
A pedicle screw system and/or a spinal stabilization system includes 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 therewith. 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 device and a coupling device for at least one of force-locking coupling and form-locking coupling of the bone alignment device and the screw shaft when in an alignment position.
Claims21
A pedicle screw system comprising 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 therewith, which screw head comprises a connecting element receptacle for a connecting element of a spinal stabilization system, said pedicle screw system further comprising a bone alignment device and a coupling device for form-locking coupling of the bone alignment device and the screw shaft when in an alignment position, wherein the coupling device is designed for allowing an axially fixed but rotatable connection to be established between the bone alignment device and the screw shaft with respect to a screw shaft longitudinal axis of the screw shaft.
A spinal stabilization system comprising at least two bone screws and at least one connecting element fixable on the at least two bone screws, wherein at least one of the at least two bone screws is configured in the form of a pedicle screw system comprising 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 therewith, which screw head comprises a connecting element receptacle for a connecting element of a spinal stabilization system, said pedicle screw system further comprising a bone alignment device and a coupling device for form-locking coupling of the bone alignment device and the screw shaft when in an alignment position, wherein the coupling device is designed for allowing an axially fixed but rotatable connection to be established between the bone alignment device and the screw shaft with respect to a screw shaft longitudinal axis of the screw shaft.
Dependencies are inferred from the claim text.