Spinal nucleus replacement implants and methods
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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app pub date -
Jan 6, 2005
filing date -
Aug 30, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Improved nucleus pulposus implants are provided to better accommodate the disc nucleus space, to provide a modified compressive modulus, to facilitate positioning, to enhance fixation, and to facilitate effective implantation and use. Some implants have sloped upper and/or lower surfaces to provide a 'wedge-shaped' implant, while other implants have circumferential grooves, and/or have radiographic markers, and/or are modified by including a material having a compression profile that differs from the compression profile of the predominant material of the implant. Some implants have surface features to enhance fixation to surrounding surfaces.
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