3D printed vertebral implant with Anti-backout features

A 3D printed vertebral implant with a resilient locking tab addresses the issue of bone screw backout in spinal implants, providing enhanced stability and ease of deployment.

WO2025064398A1 Publication Date: 2025-03-27ORTHOFIX US LLC
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Patent Information

Application Number
PCT/US2024/047037
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-21
Filing Date
2024-09-17
Publication Date
2025-03-27

AI Technical Summary

Technical Problem

Conventional spinal implants face challenges with bone screw backout, which can lead to implant loosening and pain, and existing anti-backout features are often difficult to deploy.

Method used

The development of a 3D printed vertebral implant with a resilient locking tab within a channel, allowing bone screws to pass through while preventing backout, and featuring a monolithic design or additive manufacturing process.

Benefits of technology

The solution effectively prevents bone screw backout, enhancing the stability of the implant and reducing the risk of complications such as implant loosening and pain, while being easier to implement compared to conventional anti-backout features.

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Abstract

The present disclosure may include intervertebral implantation systems and devices for spinal fusion treatment. An intervertebral implant may have a top surface configured to contact a first vertebrae, a bottom surface opposite the top surface configured to contact a second vertebrae, a distal surface extending between the top surface and the bottom surface, and a proximal surface opposite the distal surface extending between the top surface and the bottom surface. There may be a channel extending from the proximal surface to one of the top surface or the bottom surface, where the channel may be configured to receive a bone screw. The implant may further include a resilient locking tab extending along a length of the channel. The resilient locking tab may include a serpentine-shaped base extending along the length of the channel and a head projecting from a first end of the serpentine-shaped base into the channel.
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