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US 10,117,682 B2Granted
Adjustable spine distraction implant
AssigneeLife Spine, Inc.
InventorsMadeline C. Wolters, Michael S. Butler
Life of this patent
Estimating the term…
Abstract
An adjustable spine distraction implant alleviates pain associated with spinal stenosis and facet arthropathy by expanding the volume and/or cross sectional area in the spinal canal and/or neural foramen. The adjustable implant provides a spinal extension inhibitor. The implant includes elliptical or oval shaped adjustable member or spacer for positioning between and adjustably spacing apart the spinous processes.
Claims17
An adjustable spinal implant comprising:
- a body portion including:
- a first end;
- a second end,
- a wedging member including an external wedging member surface configured to interface with an adjacent vertebral body, the wedging member including an elongated channel extending from a closed first end defined in a side wedging member surface to an open second end defined in the external wedging member surface;
- and
- a retention pin extending through a sidewall of the body portion and slidingly received in the channel such that the retention pin engages the first closed end to limit the maximum expansion of the at least one wedging member;
- a first wing fixed relative to the first end of the body portion;
- and
- a second wing adjustably coupled to the body portion such that the distance between the first wing and the second wing is adjustable by a user;
- wherein the first and second wings include inward facing surfaces configured to be positioned adjacent vertebral bodies of a patient.
7 more elements
An adjustable spinal implant comprising:
- a body portion including:
- a first end;
- a second end including a solid bull nose;
- at least one wedging member received in a cavity of the body portion to be adjustable in a first direction and including a channel extending parallel to the first direction, the at least one wedging member including an external wedging member surface configured to engage bone;
- and
- at least one retention member received within the channel and configured to limit a degree of movement of the at least one wedging member;
- a first wing fixed relative to the first end of the body portion;
- and
- a second wing adjustably coupled to the body portion such that the distance between the first wing and the second wing is adjustable by a user;
- wherein the first and second wings include inward facing surfaces configured to be positioned adjacent vertebral bodies of a patient, wherein each inward facing surface comprises a plurality of spikes configured to engage vertebral bone;
- wherein the retention member includes a pin slidably movable within the channel between a first open end of the channel defined in the external wedging member surface, where the wedging member is at a position of minimum expansion, and a second closed end of the channel defined in a side wedging member surface, where the pin engages the second closed end to limit the wedging member to a position of maximum expansion.
8 more elements
An adjustable spinal implant comprising:
- a body portion including:
- a first end;
- a second end;
- a sidewall extending from the first end to the second end;
- at least one wedging member movable relative to the sidewall and including an external wedging member surface configured to engage bone, the wedging member including a channel elongated in a direction of movement of the wedging member, the channel extending from a first closed end defined in a side wedging member surface to a second open end defined in the external wedging member surface;
- and
- a retention pin extending through the sidewall and slidingly received in the channel such that the retention pin engages the first closed end to limit the maximum expansion of the at least one wedging member;
- a first wing fixed relative to the first end of the body portion;
- and
- a second wing adjustably coupled to the body portion such that the distance between the first wing and the second wing is adjustable by a user;
- wherein the first and second wings include inward facing surfaces configured to be positioned adjacent vertebral bodies of a patient, wherein each inward facing surface comprises a plurality of spikes configured to engage vertebral bone.
8 more elements
Dependencies are inferred from the claim text.