摘要:
ABSTRACT Systems (10) for positioning a connecting element (90) adjacent the spinal column in minimally invasive procedures include installation instruments (20) that guide the connecting element (90) from a location remote from one or more anchors (100) to a location proximate to the one or more anchors (100). The installation instruments (20) include extensions (130) mountable to anchors (100) engageable to the spinal column or other bony structure, and inserters (24) mountable to the anchor extensions (130) for positioning the connecting element (90) adjacent the anchors (100).
摘要:
ABSTRACT Systems and methods for multi-directional stabilization of a spinal column segment (10) are provided. The systems (30, 130, 230, 330, 520) include one or more motion preserving constructs (32, 132, 230, 330, 530) that are engaged to adjacent vertebrae (12, 14) and extend trans-axially between the vertebrae (12, 14) obliquely to the central axis (11) of the spinal column. The systems permit motion of at least a portion of a vertebral level while providing stabilization at least when tensioned. Systems that provide stabilization in compression are also contemplated.
摘要:
Systems and methods for multi-level, multi-functional stabilization of a spinal column segment are provided. The systems (20) include one or more constructs (22, 122, 222, 322, 422) having a motion preserving portion (40, 140, 240, 340, 440, 540, 640, 740, 840, 860, 870, 880) that permits motion of at least a portion of a vertebral level (11, 17) and a motion preventing portion (50, 250, 350, 450, 550, 650, 750, 850, 865, 875, 885) that substantially prevents motion of at least a portion of a second, adjacent vertebral level (11, 17).
摘要:
Embodiments of the invention include expandable, implantable devices and methods. Devices expand linearly within the volume of a membrane and laterally to provide secure fixation between or among anatomical structures. In some embodiments, an implant replaces one or more vertebral bodies, or portions of vertebral bodies, of the spine.
摘要:
ABSTRACT Systems (10) for positioning a connecting element (90) adjacent the spinal column in minimally invasive procedures include installation instruments (20) that guide the connecting element (90) from a location remote from one or more anchors (100) to a location proximate to the one or more anchors (100). The installation instruments (20) include extensions (130) mountable to anchors (100) engageable to the spinal column or other bony structure, and inserters (24) mountable to the anchor extensions (130) for positioning the connecting element (90) adjacent the anchors (100).
摘要:
An implant assembly (30) for stabilizing a spinal motion segment includes a spacer member (32) positionable between adjacent spinous processes and upper and lower engaging members (50, 70) extending from the spacer member (32) . The upper and lower engaging members engage at least one lamina (16, 18) to resist flexion of the spinal motion segment.
摘要:
A bone anchor system including a bone anchor having an integral head, a stabilization member, and a coupling member molded around the integral head of the bone anchor is provided for coupling the bone anchor to the stabilization member. The coupling member includes an interface to the stabilization member. Advantageously, the interface to the stabilization member is made of a deformable material to reduce surface stress concentration in the stabilization member. The interface of the coupling member may be integral to the coupling member, or the interface may be an interface piece that may be inserted into the coupling member. The integral head of a bone anchor may include a molded cap that is formed from a deformable material and configured to provide an interface to the stabilization member.