Spinal Implant with Adjustable Bone Screw Plates
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Solution Overview
Problem
Current spinal facet joint and laminoplasty implants require complex installation procedures due to pre-defined geometries and configurations, which can lead to increased risks of complications and inefficiencies in spinal facet joint fixation and laminoplasty procedures.
Innovation Solution
A versatile spinal implant with a base plate and pivotally connected bone screw plates that allow for adjustable angular orientation, along with a spacer component with serrations for vertebral bone interface, facilitating easier installation and adaptation to various facet joint configurations and laminoplasty cuts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pre-defined geometry implants are used for spinal facet joint fixation and laminoplasty, then the implant structure is simplified and manufacturing is easier, but the installation procedure becomes complex and requires in-situ contouring
Solution Approach 1:
The implant incorporates adjustable components including a bone screw plate with adjustable angular orientation relative to the base plate, and a distractor component with adjustable angular orientation relative to the bone screw plate. This dynamic adjustability allows the implant to adapt to various anatomical configurations without requiring complex pre-defined geometries or in-situ contouring, thereby simplifying both manufacturing and installation procedures.
2Device complexity
If pre-bent laminoplasty plates with pre-defined configurations are used, then the implant design is simplified, but the installation procedure requires numerous iterations and increases surgical time
Solution Approach 1:
The implant provides pre-configured adjustment capabilities through its modular design with adjustable bone screw plate and distractor component. This preliminary action allows surgeons to quickly adapt the implant to the specific anatomical configuration without requiring multiple iterative adjustments during surgery, thereby reducing surgical time while maintaining appropriate device complexity.
3Stability of the object's composition
If complex installation procedures are used to achieve precise fit, then the implant stability is improved, but the risk of complications increases and procedural efficiency decreases
Solution Approach 1:
The adjustable angular orientation of the bone screw plate and distractor component allows for precise fit and optimal implant stability through direct adjustment rather than complex installation procedures. This reduces the risk of complications associated with complex procedures while maintaining high stability through proper anatomical alignment.
4Ease of manufacture
If fixed configuration implants are used, then the manufacturing process is simplified, but the adaptability to different anatomical configurations is reduced
Solution Approach 1:
The implant features adjustable angular orientation capabilities for both the bone screw plate and distractor component, providing versatility to accommodate different anatomical configurations. This dynamic design maintains relatively simple manufacturing processes while significantly improving adaptability compared to fixed configuration implants.
Data Source
AI summary
A spine implant for use in spinal facet joint fixation or to connect distracted portions of a vertebral lamina in a laminoplasty through use or non-use of a spacer. One or two bone screw plates are angularly adjustable relative to a base plate for attachment by bone screws to vertebral bone. One form of the spine implant has a base plate, a first plate pivotally connected to the base plate for angular adjustment relative to the base plate and configured to hold one or two bone screws for attaching the first plate to first vertebral bone, and a second plate configured to hold two bone screws for attaching the second plate to second vertebral bone. The second plate may be pivotally connected to the body for angular adjustment of the second plate relative to the base plate or fixed to the base plate at a predetermined angle.