Vertebral interbody compression implant
First Claim
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1. An implant for securing boney structures, the implant comprising:
- a compression mechanism having bone engagement members slideably coupled to a housing and rotatably coupled to the implant, the housing moveably positioned within the implant, wherein a movement of the housing relative to the implant causes the bone engagement members to slide within the housing and the bone engagement members to rotate away from the implant; and
a force transfer mechanism coupled to the compression mechanism and configured to move the housing.
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Abstract
An apparatus and method for securing boney structures is disclosed which includes a compression mechanism and a force transfer mechanism. The compression mechanism may have bone engagement members that have one portion slideably coupled to a housing positioned within the implant and another portion rotatably coupled to the implant so that a movement of the housing causes the slideable portion to move within the housing and a penetrating member to rotate about the rotatably coupled portion. The force transfer mechanism may be coupled to the compression mechanism to move the housing.
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Citations
17 Claims
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1. An implant for securing boney structures, the implant comprising:
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a compression mechanism having bone engagement members slideably coupled to a housing and rotatably coupled to the implant, the housing moveably positioned within the implant, wherein a movement of the housing relative to the implant causes the bone engagement members to slide within the housing and the bone engagement members to rotate away from the implant; and a force transfer mechanism coupled to the compression mechanism and configured to move the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A vertebral interbody compression implant for maintaining the spacing between adjacent bony structures, the implant comprising:
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a compression mechanism for securing the implant to the adjacent bony structures, wherein the compression mechanism comprises; a housing having arm extension members extending along a longitudinal axis in a first direction, wherein the housing is configured to move linearly within a passage in the implant; and bone engagement members comprising bone penetrating elements, wherein the bone engagement members are slideably coupled to the arm extension members and rotatably coupled to the implant, such that a linear movement of the housing causes a tab portion of the bone engagement members to slide within a slot of the arm extension members and the bone penetrating elements to follow an arcuate path away from the implant; and a force transfer mechanism for moving the plurality of bone engagement members, the force transfer mechanism comprising; a drive shaft coupled to one end of the housing and extending along the longitudinal axis in a second direction opposite the first direction; and a drive element coupled to the drive shaft and configured to apply a force to the housing to move the housing axially in the first direction relative to the drive element to cause the tab of the bone engagement member to slide in the slot and rotate about the first end, wherein the bone engagement members rotate from a first position to a second position. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A vertebral interbody compression implant for maintaining the spacing between adjacent boney structures, the implant comprising:
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a compression mechanism for securing the implant to the adjacent bony structures, wherein the compression mechanism comprises; a housing configured to slide along a passageway in the implant, the housing having a first arm extension and a second arm extension that extend in a first direction along a longitudinal axis in the passageway within the implant, wherein the first arm extension and the second arm extension form a channel, and wherein the first arm extension and the second arm extension comprise a first slot and second slot that extend in a generally transverse direction relative to the longitudinal axis and that are opposing across the channel; a first bone engagement member comprising a first arm extending from a first tab slidingly coupled to the housing in the first slot to a first end rotatably coupled to the implant, and a second arm extending from the first tab to a second end having a bone penetrating element for piercing adjacent bony structures, wherein the second arm is configured to rotate away from a first side of the implant towards a first adjacent boney structure; a second bone engagement member comprising a first arm extending from a second tab slidingly coupled to the housing in the second slot to a first end rotatably coupled to the implant, and a second arm extending from the second tab to a second end having a bone penetrating element for piercing adjacent bony structures, wherein the second arm is configured to rotate away from a second side of the implant towards a second adjacent boney structure; and wherein a force applied to the housing by a force transfer mechanism coupled to the housing moves the housing longitudinally in the passageway in the first direction to slide the first tab of the first bone engagement member within the first slot and the second tab of the second bone engagement member within the second slot in generally the opposite direction as the first tab, and to rotate the second arm of the first bone engagement member and the second bone engagement member about the first end in generally opposite directions away from the implant, wherein the first bone engagement member and the second bone engagement member rotate from a first position to a second position. - View Dependent Claims (16, 17)
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Specification