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US 6,190,414 B1Granted
Apparatus for fusion of adjacent bone structures
AssigneeSurgical Dynamics, Inc.
InventorsWayne P. Young, Peter W.J. Hinchliffe
Life of this patent
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AssigneeSurgical Dynamics, Inc.
InventorsWayne P. Young, Peter W.J. Hinchliffe
Estimating the term…
A prosthetic implant for facilitating fusion of adjacent vertebrae includes an implant member dimensioned to be at least partially positioned within an intervertebral space defined between adjacent vertebrae. The implant member includes first and second vertebral engaging plates operatively connected to each other for respectively engaging vertebral end plates of the adjacent vertebrae and having discontinuous surfaces to engage the vertebral end plates and promote bone ingrowth. A displacement member is associated with the engaging plates and is deployable to cause relative movement of the engaging plates to thereby at least laterally displace the engaging plates whereby in a deployed position the engaging plates are in supportive engaged relation with the adjacent vertebrae. The first and second engaging plates are preferably pivotally connected to each other at respective end portions thereof to define a reduced entry profile to facilitate insertion within the intervertebral space. The implant member may also define an interior cavity for accommodating bone growth inducing substances. The first and second engaging plates preferably include apertures extending therethrough to permit communication with the bone growth inducing substances within the interior cavity. The first and second engaging plates may also include projections for engaging the vertebral end plates to assist retention of the implant within the intervertebral space. An apparatus and method for facilitating fusion of adjacent vertebrae are also disclosed.
A prosthetic implant apparatus for facilitating fusion of adjacent vertebrae, comprising an implant member dimensioned to be at least partially positioned within an intervertebral space defined between adjacent vertebrae, the implant member including first and second vertebral engaging plates pivotally connected to each other about a pivot pin extending through corresponding aligned openings of the first and second engaging plates, and adapted for relative pivotal movement to respectively engage vertebral surfaces of the adjacent vertebrae, the implant member defining a longitudinal median plane extending between the engaging plates in equidistant relation therewith, the first and second engaging plates having discontinuous surfaces to engage the vertebral surfaces and promote bone ingrowth, and a displacement member associated with the engaging plates and being movable in a transverse direction relative to the longitudinal median plane, to cause relative movement of the engaging plates, to thereby at least laterally displace the engaging plates to supportingly engage the adjacent vertebrae.
An apparatus for facilitating fusion of adjacent vertebrae, which comprises:
An apparatus for facilitating fusion of adjacent vertebrae, which comprises:
An implant for facilitating fusion of adjacent vertebrae, comprising an implant member including first and second members pivotally connected and pivotally moveable relative to each other, and having first and second supporting surfaces for engaging respective vertebral surfaces of the adjacent vertebrae, the implant member defining a longitudinal median plane disposed between the first and second members in equidistant relation therewith, the first member having a threaded portion cooperatively engageable with a threaded portion of the second member, one of the threaded portions of the first and second members being rotatable about an axis which is generally transverse relative to the longitudinal plane to thereby cause corresponding relative movement of the first and second members through the cooperation of the respective threaded portions to thereby move the implant member to a deployed position wherein the first and second supporting surfaces are in oblique angular relation and contact the vertebral surfaces to maintain the adjacent vertebrae in predetermined spaced relation during healing.
A prosthetic implant for facilitating fusion of first and second adjacent vertebral portions, which comprises an implant member dimensioned to be at least partially positioned within an intervertebral space defined between adjacent vertebrae, the implant member including first and second separate and independent members pivotally connected about a fixed pivot pin extending through corresponding aligned openings of the first and second members, the first and second members having contacting surfaces for respectively engaging first and second adjacent vertebral portions, the first and second members pivotally movable about a fixed axis of rotation defined by the pivot pin from an initial position to facilitate insertion between the first and second vertebral portions to a deployed position wherein the contacting surfaces of the first and second members are in oblique angular relation and support the first and second vertebral portions in spaced relation.
The apparatus according to clam 11 wherein the first and second engaging plates are pivotally connected about a pivot pin received within corresponding aligned openings of the first and second engaging plates.
A prosthetic implant for positioning between adjacent vertebrae, which comprises an implant member dimensioned to be at least partially positioned within an intervertebral space defined between adjacent vertebrae, the implant member including first and second members, each member having contacting surfaces for respectively engaging first and second adjacent vertebral portions, and means for pivotally mounting the first and second members to permit pivotal movement of the first and second members between an initial position to facilitate insertion between the first and second vertebral portions to a deployed position wherein the contacting surfaces of the first and second members are in oblique angular relation and support the first and second vertebral portions in spaced relation, wherein the means for pivotally mounting includes a pivot pin, the pivot pin defining a fixed axis of rotation, the first and second members being pivotally movable about the first axis of rotation of the pivot pin.
Dependencies are inferred from the claim text.