Spine distraction implant and method
First Claim
Patent Images
1. An apparatus, comprising:
- a body having a central portion extending along an axis between a first end and a second end, the body comprising a first arm, a second arm, a third arm and a fourth arm, the first and fourth arms extending in a diagonal manner from the body, and each comprising a first portion extending transverse to the axis from the central portion and a second portion extending substantially parallel to the axis from the first portion, the central portion of the body configured to be disposed between adjacent spinous processes, the first arm and the third arm at a first side of the body and the second arm and the fourth arm at a second side of the body opposite of the first side of the body, the first arm having a length greater than a length of the third arm such that the first arm is moveable through a space between the adjacent spinous processes and such that the third arm is moveable through the space to position the central body between the adjacent spinous processes,wherein the arms are each free of any openings extending through opposite surfaces of a respective arm and the central portion is monolithically formed with the first, second, third and fourth arms.
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Abstract
A spine distraction implant alleviates pain associated with spinal stenosis and facet arthropathy by expanding the volume in the spine canal and/or neural foramen. The implant provides a spinal extension stop while allowing freedom of spinal flexion.
379 Citations
19 Claims
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1. An apparatus, comprising:
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a body having a central portion extending along an axis between a first end and a second end, the body comprising a first arm, a second arm, a third arm and a fourth arm, the first and fourth arms extending in a diagonal manner from the body, and each comprising a first portion extending transverse to the axis from the central portion and a second portion extending substantially parallel to the axis from the first portion, the central portion of the body configured to be disposed between adjacent spinous processes, the first arm and the third arm at a first side of the body and the second arm and the fourth arm at a second side of the body opposite of the first side of the body, the first arm having a length greater than a length of the third arm such that the first arm is moveable through a space between the adjacent spinous processes and such that the third arm is moveable through the space to position the central body between the adjacent spinous processes, wherein the arms are each free of any openings extending through opposite surfaces of a respective arm and the central portion is monolithically formed with the first, second, third and fourth arms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14, 16, 17, 18, 19)
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8. An apparatus, comprising:
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a body having a central portion extending along an axis between a first end and a second end, the body comprising a first arm, a second arm, a third arm and a fourth arm, the first and fourth arms extending in a diagonal manner from the body, and each comprising a first portion extending transverse to the axis from the central portion and a second portion extending substantially parallel to the axis from the first portion, the first arm and the fourth arm being longer than the central portion, the second arm and the third arm being no longer than the central portion, the third arm having a length less than a length of the first arm such that the first arm is moveable through a space between the adjacent spinous processes and such that the third arm is moveable through the space to position the central portion of the body between the spinous processes the central portion, the first arm and the third arm collectively defining a first saddle configured to receive a first spinous process from adjacent spinous processes, and the central portion, the second arm and the fourth arm collectively defining a second saddle configured to receive a second spinous process from the adjacent spinous processes, wherein the arms are each free of any openings extending through opposite surfaces of a respective arm and the central portion is monolithically formed with the first, second, third and fourth arms. - View Dependent Claims (9, 10, 11, 12, 13, 15)
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Specification