Plastically deformable inter-osseous device
First Claim
1. An orthopedic stabilizing device for placement in an interosseous space defined by adjacent bony surfaces, comprising a plastically deformable monolithic bodya.) expandable along a height axis between a first smaller height to a second larger expanded height by plastic deformation of the monolithic body said monolithic body having an upper bone contact structure and a lower bone contact structure,b.) having first and second matchable, partial columns that are not engaged with each other at the first height and are operative to directly engage each other and jointly span the distance between said upper bone contact structure and said lower bone contact structure at the second height to form a supporting structure along the height axis,c.) having a longitudinal axis,d.) having a lateral axis, ande.) operative to contact those adjacent bony surfaces when expanded,wherein the first and second matchable, partial columns are latchable directly with each other at the second height.
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Accused Products
Abstract
Described here are deformable, monolithic, stabilization devices, or implants, suitable for use within bone and between bones, for instance, to fuse vertebral bodies, to repair herniated discs, or to repair spinal compression fractures. The implants are introduced into a chosen site at a first, smaller height and then plastically deformed to achieve a second, but unique, pre-selected, larger height. Variations of the device provide one or more specific larger heights. The devices are particularly suitable as intervertebral spinal fusion implants for the immobilization of adjacent vertebral bodies. Methods of deploying the implants are also described as are instruments for such deployment.
Also described are variations of the device particularly suitable as sizing instruments. These versions are elastic, i.e., not plastically deformable, and may be restored to their original size. Many of the described variations include deformable regions serving as hinges. Other variations are non-monolithic or may have one or more classical hinges substituted for the deformable regions.
180 Citations
31 Claims
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1. An orthopedic stabilizing device for placement in an interosseous space defined by adjacent bony surfaces, comprising a plastically deformable monolithic body
a.) expandable along a height axis between a first smaller height to a second larger expanded height by plastic deformation of the monolithic body said monolithic body having an upper bone contact structure and a lower bone contact structure, b.) having first and second matchable, partial columns that are not engaged with each other at the first height and are operative to directly engage each other and jointly span the distance between said upper bone contact structure and said lower bone contact structure at the second height to form a supporting structure along the height axis, c.) having a longitudinal axis, d.) having a lateral axis, and e.) operative to contact those adjacent bony surfaces when expanded, wherein the first and second matchable, partial columns are latchable directly with each other at the second height.
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25. An orthopedic stabilizing device for placement in an interosseous space defined by adjacent bony surfaces, comprising a plastically deformable monolithic body
a.) expandable along a height axis between a first smaller height to a second larger expanded height by plastic deformation of the monolithic body said monolithic body having an upper bone contact structure and a lower bone contact structure, and b.) having first and second matchable, partial columns that are not engaged with each other at the first height, that are latchable to each other, and are operative to latch to each other and jointly span the distance between said upper bone contact structure and said lower bone contact structure only at the second height to form a supporting structure along the height axis.
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26. An orthopedic stabilizing device for placement in an interosseous space defined by adjacent bony surfaces, comprising a plastically deformable monolithic body
a.) expandable along a height axis between a first smaller height to a second larger expanded height by plastic deformation of the monolithic body, said monolithic body having an upper bone contact structure and a lower bone contact structure, b.) having first and second matchable, partial columns that are not engaged with each other at the first height and are operative to directly engage each other and jointly span the distance between said upper bone contact structure and said lower bone contact structure at the second height to form a supporting structure along the height axis, c.) having a longitudinal axis, d.) having a lateral axis, and e.) operative to contact those adjacent bony surfaces when expanded, wherein the first and second matchable, partial columns are operative to maintain the monolithic body at the expanded height by direct contact between the matchable, partial columns.
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27. An orthopedic stabilizing device for placement in an interosseous space defined by adjacent bony surfaces, comprising:
a plastically deformable monolithic body having a distal end and a proximal end, an upper bone contact structure and a lower bone contact structure, a rotatable locator arm adjacent the distal end and a rotatable locator arm adjacent the proximal end, each locator arm being joined to a respective upper bone contact structure and a lower bone contact structure by a deformation joint, a first partial column between said locator arms and projecting from said upper bone contact structure toward said lower bone contact structure, and a second matchable partial column between said locator arms projecting from said lower bone contact structure toward said upper bone contact structure, said body being expandable along a height axis between a first smaller height to a second larger expanded height by the rotation about and plastic deformation of said deformation joints, said first and second matchable partial columns not being engaged with each other at the first height and operative to directly engage each other at the second height to form a supporting structure along the height axis. - View Dependent Claims (28, 29, 30, 31)
Specification