This invention uses specialized washers and screws to secure interbody grafts in spinal fusion, ensuring precise placement and stability.

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  1. General Details

    Various embodiments of the spinal fusion involve methods and apparatuses for securing an interbody graft between adjacent vertebrae after a direct lateral interbody fusion (DLIF) or anterior lumbar interbody fusion (ALIF) procedure.

    Key Features

    • Unique Fastener Assembly
      The invention includes a fastener assembly with an asymmetric washer, featuring a major and minor lobe, and a screw designed to secure the major lobe near the interbody region, effectively retaining the graft in place after a DLIF procedure.
    • Locking Screw Assembly
      A locking screw assembly with a washer and a screw having mating locking features allows surgeons to adjust the washer’s angular position relative to the interbody region for precise placement.
    • Graft Retention Methods
      The method for replacing disc material involves inserting a washer and screw through a guide sleeve adjacent to the interbody space, then attaching the screw to the vertebral bodies to hold the graft in place during bony growth.
    • Enhanced DLIF Graft Retention Assemblies
      Additional embodiments feature a dog bone washer secured by fasteners, a screw locking mechanism for precise washer positioning, and designs that facilitate angled screw insertion while keeping the screw head aligned with the vertebral body surface. Other designs include washers with angled threaded holes for angled screw insertion and washers that resiliently deform as screws are driven into the vertebral body.

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  2. Patent Portfolio

    The IP and assets available for sale include:

    • US11076902 – “Locking screw assembly for facilitating direct lateral interbody fusion procedures”
    • US20190254725 – “Locking Screw Assembly For Facilitating Direct Lateral Interbody Fusion Procedures”
    • US10376382 – “Methods and apparatus for facilitating a posterior lumbar interbody fusion procedure”
    • WO2018094102 – “Methods and apparatus for facilitating a posterior lumbar interbody fusion procedure”
    • US6837905 – “Spinal vertebral fusion implant and method”
    • US11717372 – “Shape memory surgical sponge for retracting the dura during a laminectomy procedure”
    • WO2019165247 – “Shape memory surgical sponge for retracting the dura during a laminectomy procedure”
  3. Data Room Access & Additional Details

    Other Public Data Room Materials Available at VIP-3306 Public Data Room for Spinal Fusion and Surgical Sponge IP:

    •  Introductory Materials
    • Patents and Patent Applications
    • Patent File Histories
    • Publicly Available Patent Assignment Documents
    • Non-Disclosure Agreement Draft to access more files listed below

    Additional Materials (available upon signing a mutual non-disclosure agreement):

    • Due Diligence Review
  4. More Information

    Pricing guidance for this transaction may be available. All parties interested in the IP above are authorized to contact Spencer Rogers at Vibrant IP, LLC at spencer@vibrantip.com and 415-997-9772.