Dynamized interspinal implant
First Claim
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1. An implant positionable between adjacent vertebrae, the implant comprising:
- an upper portion having a porous superior bone-contacting surface adapted to bear upon an upper vertebra and to promote bony ingrowth;
first and second extensions projecting upwards from the superior surface and extending above the superior surface;
a lower portion having a porous inferior bone-contacting surface adapted to bear upon a lower vertebra and to promote bony ingrowth;
first and second extensions projecting downwards from the inferior surface and extending below the inferior surface; and
a curved anterior wall connecting the upper and lower portions;
wherein the implant is formed from titanium alloy, andwherein the implant is symmetrical about a transverse plane that extends through a midpoint of the curved anterior wall.
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Abstract
An interspinous process having a narrowed distal portion.
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Citations
16 Claims
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1. An implant positionable between adjacent vertebrae, the implant comprising:
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an upper portion having a porous superior bone-contacting surface adapted to bear upon an upper vertebra and to promote bony ingrowth; first and second extensions projecting upwards from the superior surface and extending above the superior surface; a lower portion having a porous inferior bone-contacting surface adapted to bear upon a lower vertebra and to promote bony ingrowth; first and second extensions projecting downwards from the inferior surface and extending below the inferior surface; and a curved anterior wall connecting the upper and lower portions; wherein the implant is formed from titanium alloy, and wherein the implant is symmetrical about a transverse plane that extends through a midpoint of the curved anterior wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An implant for placement between adjacent vertebrae, the implant comprising:
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an upper portion having first and second upwardly-projecting extensions and a porous region disposed between the first and second extensions, the porous region being adapted to bear upon an upper vertebra and to promote bony ingrowth; a lower portion having first and second downwardly-projecting extensions and a porous region disposed between the first and second extensions, the porous region being adapted to bear upon a lower vertebra and to promote bony ingrowth; and a curved anterior surface extending between the upper and lower portions; wherein the implant is formed from titanium alloy, and wherein each of the first and second upwardly-projecting extensions and the first and second downwardly-projecting extensions has an end surface, said end surfaces lying in a common plane. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification