Modular Spinal Anchor Assembly for Deformity Correction
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Solution Overview
Problem
Current spinal fixation systems lack the necessary modularity and versatility to accommodate the unique anatomical characteristics and deformities of individual patients, requiring a high degree of custom configuration and complex procedural maneuvers for effective stabilization and correction.
Innovation Solution
A modular spinal anchor assembly featuring a bone screw and receiver system with polyaxial motion capabilities, allowing for secure attachment to vertebrae and flexible positioning of spinal rods, enabling both provisional and final locking configurations to facilitate correction of spinal deformities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing spinal fixation systems use a combination of rods, plates, pedicle screws and bone hooks for fixing the framework to the affected vertebrae, then the spine can be stabilized, but the system lacks modularity and versatility to accommodate unique anatomical characteristics and deformities of individual patients
Solution Approach 1:
The spinal fixation system is divided into modular components including receivers with polyaxial capability, rods, and connection elements. Each receiver can be independently positioned and oriented, allowing the system to be configured to match various anatomical deformities without requiring complex custom procedures. The segmentation enables flexible assembly tailored to each patient's specific spinal geometry.
Solution Approach 2:
The receivers in the system possess polyaxial capability, meaning a single receiver design can accommodate rods at multiple angles and orientations. This multi-functionality allows the same basic component to adapt to various anatomical configurations and deformity types, reducing the need for multiple specialized components and simplifying the overall procedural complexity.
2Adaptability or versatility
If a modular spinal fixation system allows for a large degree of custom configurations, then it can assist in corrective maneuvers for severe deformities, but the system requires high degree of custom configuration and complex procedural maneuvers
Solution Approach 1:
The receivers incorporate polyaxial dynamic capability, allowing the rod insertion angle to be adjusted within a range of motions before final locking. This dynamic adjustment feature enables clinicians to easily achieve the optimal configuration for each patient's anatomy and deformity without requiring complex pre-planning or multiple specialized components, thereby improving ease of operation while maintaining high adaptability.
Solution Approach 2:
The system allows for parameter changes in rod orientation and receiver positioning through the polyaxial mechanism. By enabling continuous adjustment of angular parameters within defined ranges, the system simplifies the customization process compared to fixed-configuration systems, allowing clinicians to achieve corrective maneuvers through straightforward parameter adjustments rather than complex procedural steps.
Data Source
AI summary
The present invention relates generally to medical devices and methods generally aimed at spinal surgery. In particular, the disclosed system and associated methods relate to performing spinal fixation with the use of a deformity system.