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Non-expandable multiple-segment lockable cage

a lockable cage, multiple-segment technology, applied in the field of multiple-segment lockable cage, can solve the problems of lack of manipulation control, and achieve the effect of enhancing attachment with bone and easy steering

Inactive Publication Date: 2018-08-23
EXPANDING ORTHOPEDICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a simple and articulated device made of medical materials that can be easily steered and locked in a desired position. It can be used in spinal fusion cases or other spinal or bone applications where a controllable spacer is needed. The device can have regular or irregular surfaces that enhance attachment with bone, and its surfaces can be parallel or tilted to fit any intervertebral space shape. It can be made of titanium or titanium alloy, PEEK, polymers, resorbable materials, or any other metal or natural / synthetic material combination. The invention offers greater flexibility and precision in spinal and bone applications.

Problems solved by technology

However, such devices suffer from a lack of manipulation control during the insertion process and while in the intervertebral space, including difficulty in locking the device in the final desired position.

Method used

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  • Non-expandable multiple-segment lockable cage
  • Non-expandable multiple-segment lockable cage
  • Non-expandable multiple-segment lockable cage

Examples

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Embodiment Construction

[0023]Reference is now made to FIGS. 1A-1B, which illustrate a cage device 10, in accordance with a non-limiting embodiment of the present invention.

[0024]Cage device 10 includes first and second segments 12 and 14 connected by an eccentric hinge 16. The first and second segments 12 and 14 are formed with cooperating first and second ratchets 18 and 20, respectively, which ratchet together as first segment 12 pivots about hinge 16 relative to second segment 14. The hinge 16 is eccentric, which means the pivot point of the hinge is off-center from the center point 22 of the first ratchet 18, that is, the origin of the radius of curvature of the curved contour on which the ratchet teeth are formed. The segments can be steered in one direction in controlled steps per the teeth spacing of the ratchet system, until reaching a final limit when a first stopper portion 24 of first segment 12 abuts against a second stopper portion 26 of second segment 14. The segments may include bone graft ...

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Abstract

A cage device includes first and second segments pivotally connected by a hinge. Pivoted movement of the segments with respect to each other is limited by a first stopper portion of the first segment abutting against a second stopper portion of the second segment.

Description

FIELD OF THE INVENTION[0001]The present invention generally relates to devices and methods for spinal fusion or other spinal techniques and particularly to a multiple-segment lockable cage for such spinal techniques.BACKGROUND OF THE INVENTION[0002]Cages for spine fusion are used to fuse two or more vertebrae for treatment of different pathologies. The cages improve the anterior column stability, preserve the disc space height, include chambers for bone graft that enhance the fusion process and are used in some cases with the addition of supplementary screws. The most efficient cages have a large contact surface for contacting both vertebrae endplates, superior and inferior, and are able to be located preferably in the periphery of the disc space.[0003]Simple cages include a spacer of rectangular, circular or trapezoidal shape made of a single segment device. If one cage is insufficient to cover the space to be treated, more than one cage can be introduced into the space. Some cages...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/44A61F2/46
CPCA61F2/4425A61F2/4611A61F2002/448A61F2002/4475A61F2002/443A61F2/4455A61F2002/30471A61F2002/30507A61F2002/30522A61F2002/30523A61F2002/30528A61F2002/30538A61F2002/30593
Inventor LEVY, MARK M.ISHAY, ERANHLEIHIL, JAFFARGUY, ASSAF
Owner EXPANDING ORTHOPEDICS
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