摘要:
Systems for positioning a connecting element adjacent the spinal column in minimally invasive procedures include installation instruments that guide the connecting element from a location remote from one or more anchors to a location proximate to the one or more anchors. The installation instruments include extensions mountable to anchors engageable to the spinal column or other bony structure, and inserters mountable to the anchor extensions for positioning the connecting element adjacent the anchors.
摘要:
The present invention relates to methods and instruments for placing a brace or connecting element into an animal subject for engagement with anchors secured in the animal subject. The installation instrument includes anchor extensions coupled to the anchors. The instrument is movable with respect to the anchors to position the connecting element in a position more proximate the anchors.
摘要:
A vertebral rod for stabilizing a patient's spine. The rod may include an elongated body with first and second ends and have an elongated cross-sectional shape with a major axis and a minor axis and a centroid positioned at an intersection of the axes. First and second longitudinal channels may extend through the body. The channels may be spaced apart and contained within the body. The body may have a first flexural rigidity along the major axis and a different second flexural rigidity along the minor axis.
摘要:
Devices, methods and systems for stabilizing at least a portion of the spinal column are provided. Anchors are engageable to vertebra and a stabilization member is engageable between the anchors. The stabilization member includes an elongate tension member and a compression member in a passage of the tension member.
摘要:
The present invention relates to a brace installation instrument placement that is mounted to anchors secured in an animal subject. The installation instrument includes anchor extensions coupled to the anchors. The instrument is movable with respect to the anchors to position a brace in a position more proximate the anchors. The brace can be indexed for insertion at a predetermined orientation with respect to the installation instrument. Methods and techniques for using the installation instrument are also provided.
摘要:
One nonlimiting embodiment of the present application is directed to a system for positioning a connecting element adjacent one or more bones or bony portions, such as the spinal column, through a minimally invasive surgical approach. The system generally includes a number of bone anchors engageable to the one or more bones or bony portions and a number of anchor extenders removably engaged to the bone anchors. A connecting element inserter instrument is engageable with one of the anchor extenders and is movable along a longitudinal axis of the anchor extender. As the inserter instrument is moved along the longitudinal axis toward the bone anchors, a leading end of the connecting element is rotated away from the longitudinal axis and the connecting element is positioned at a location adjacent the number of bone anchors in a minimally invasive surgical procedure. However, in other embodiments, different forms and applications are envisioned.
摘要:
Methods of assembling a vertebral anchor to a body shaped to receive a longitudinal member. The methods may include inserting a wear member and a head of an anchor into a cavity through an inlet in a first end of a body. The body may further include a second end with a channel to receive the longitudinal member. The method may include deforming the first end of the body and reducing a width of the inlet measured perpendicular to a longitudinal axis of the body and capturing the wear member and the head in the cavity. The method may also include compressing the wear member against the head of the anchor and increasing an amount of interference between the wear member and the head.
摘要:
A spinal implant is provided that includes a first component for engaging a first vertebra, a second component for engaging a second vertebrae, and a damping member is positioned therebetween. The damping member has at least two chambers connected by an opening. A fluid is disposed within the chambers such that compression of the first and second components towards one another causes the fluid to be displaced from one of the chambers to another chamber through an opening. The opening has a reduced size relative to the chambers to restrict the flow of the fluid between the chambers and provide a dampening effect. In some instances, the rheologic properties of the fluid positioned within the chambers are dependent upon the strength a magnetic field passing through the fluid. In other aspects of the present disclosure, prosthetic devices, intervertebral implants, spinal systems, implantation methods, and treatment methods are provided.
摘要:
The present invention concerns spinal fixation systems, and particularly systems utilizing pedicle screws, connectors and elongated members positioned adjacent to the spinal column. More specifically, the invention concerns improvements to spinal connectors having set screws used to connect to the elongate members, such as spinal rods, that include a means for inhibiting rotational movement of a partially inserted set screw before such connectors are implanted by the surgeon.
摘要:
Instruments and methods include a guide instrument mountable to at least one anchor extension to guide the positioning of an anchor in a bony segment. The guide instrument facilitates aligning the anchor with one or more other anchors already engaged to the bony segment. The anchors can then be engaged with a connecting element extending therebetween. The guide instrument facilitates multi-level fixation of bony segments with bone anchors and one or more connecting elements in a minimally invasive surgical approach.