Arched Fixation Components and Intervertebral Implants
A technology for fixing parts and implants, which is applied in the field of orthopedics and can solve problems such as obstruction, patient obstruction of screw insertion trajectory, and difficulty of linear entry line anatomy.
Active Publication Date: 2015-09-09
SYNTHES GMBH
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Problems solved by technology
However, in many surgical situations, achieving the desired trajectory for screw insertion can be difficult due to patient anatomy that obstructs the linear line of entry
For example, it is desirable to place pedicle screws medially in the sacrum in order to prevent screw loosening and / or extraction, but this may be prevented by the iliac crest obstructing the linear access line
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[0056] Certain terms used in the following description are for convenience only and not for limitation. The words "right", "left", "top" and "bottom" indicate directions in the drawings to which reference is made. The words "inwardly" and "outwardly" refer to directions towards and away from, respectively, the geometric center of the device and its indicated components. The words "anterior", "posterior", "superior", "below", "lateral", "middle", "sagittal", "axial", "coronal", "cranial", "caudal" and related words and / or phrases refer to preferred positions and orientations of the human body with reference, without limitation.
[0057] The words "arcuate" and "curved" as used herein generally refer to the varying physical geometry of an object along an axis coincident with it, for example the body of an arcuate fixation member along a center defined within the body of the object between its proximal and distal ends The longitudinal axis deviates from a straight line. Genera...
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Arcuate fixation members with varying configurations and / or features are provided, along with additional components for use therewith in provided fixation systems and intervertebral implant systems. The arcuate fixation members may be of varying lengths, cross sectional geometries, and / or cross sectional areas, and may be configured with various features such as heads configured to accept other fixation system components, tabs to allow arcuate fixation member-in-arcuate fixation member or fixation anchor-in-arcuate fixation member configurations. Applications of fixation systems and intervertebral implants systems utilizing arcuate fixation members are particularly suitable when a linear line-of-approach for delivering fixation members is undesirable.
Description
[0001] Cross References to Related Applications [0002] This patent application claims priority from US Patent Application No. 12 / 761101, filed April 15, 2010, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates generally to orthopedics, and more particularly to fixation systems, intervertebral implants, and related surgical methods and procedures using them. Background technique [0004] Spinal fixation systems such as pedicle screw and rod structures are commonly used to promote fusion between the intervertebral bodies. Insertion of pedicle screws typically requires a linear "entry line" trajectory aligned with the longitudinal axis of the screw in order to accommodate access and delivery instruments. Similarly, anchors such as bone screws can be used to secure intervertebral implants directly to the vertebral bodies, thus often requiring multiple screws to be inserted at unique angles oblique to the sagittal ...
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IPC IPC(8): A61F2/44
CPCA61B17/7032A61F2002/30517A61B17/8052A61F2/4465A61F2002/30841A61F2002/30784A61B17/92A61F2/30965A61F2002/30604A61F2002/4475A61F2220/0025A61F2220/0008A61F2/4455A61F2002/30509A61F2002/4627A61F2230/0097A61F2002/30904A61F2/30744A61B17/70A61F2/4611A61F2002/4628A61F2/28A61F2002/30879A61F2002/30306A61F2002/30578A61F2310/00017A61F2/30771A61B17/7076A61F2002/30787A61F2002/30514A61F2310/00359A61F2002/30387A61F2002/30843A61F2002/0081A61F2310/00023A61F2002/2835A61F2002/30845A61F2002/30616A61B17/8042A61B17/7037A61B17/7056A61F2/442A61B17/7044A61F2310/00131A61B2017/8655A61F2002/30777A61F2/30749A61F2002/30507A61F2002/30593A61F2220/0016A61F2/44A61F2002/4615
Inventor T·多纳J·舍尼利D·埃文斯A·格费勒
Owner SYNTHES GMBH