Dynamic Vertebral Stabilization Connector
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current spinal stabilization systems face challenges due to anatomical considerations such as bone degeneration and interference with neural elements, leading to undesirable side effects and a need for further development in vertebral stabilization techniques.
Innovation Solution
A system comprising bone anchors with threaded stems and connectors that transition between open and closed configurations, along with elongate support members and a crosslink device, providing bilateral or unilateral stabilization by engaging with vertebrae through posterior arches and allowing for flexible and rigid fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If rigid fixation systems are used to stabilize vertebrae, then stabilization effectiveness is improved, but interference with neural elements and bone degeneration worsen
Solution Approach 1:
The connector transitions from a static to a dynamic structure, allowing movement between open and closed configurations. In the open configuration, neural elements have clearance to prevent interference. In the closed configuration, the connector provides rigid fixation for vertebral stabilization. This dynamic adaptability resolves the contradiction between stabilization effectiveness and neural element protection.
2Adaptability or versatility
If connectors are designed to allow movement for flexibility, then adaptability to anatomical variations is improved, but stabilization reliability worsens
Solution Approach 1:
The connector's dynamic design allows it to adapt to different anatomical configurations during insertion (open configuration providing flexibility), then transition to a locked stable state (closed configuration) to ensure reliable fixation. This resolves the contradiction between adaptability and reliability.
Solution Approach 2:
The fixation system is segmented into movable and fixed components. The connector body remains stationary while the receptacle moves relative to it, allowing the system to achieve both flexibility during positioning and stability during fixation through the relative movement of its segments.
3Stability of the object's composition
If complex stabilization systems are implemented to address anatomical considerations, then stabilization effectiveness is improved, but device complexity worsens
Solution Approach 1:
The invention merges the positioning flexibility and fixation stability functions into a single connector component. The connector integrates both the movable receptacle for positioning and the locking mechanism for fixation, eliminating the need for separate positioning and fixation devices, thus reducing overall system complexity while maintaining stabilization effectiveness.
Data Source
AI summary
Systems and methods for vertebral stabilization are provided. In one embodiment, a system includes a bone anchor with a threaded portion positioned opposite a post portion. A connector is provided including a pair of oppositely positioned branches defining a receptacle structured to receive the post portion. The receptacle is positionable between an open configuration and a closed configuration, wherein the connector is positionable along and about the post portion in the open configuration. The system also includes an elongate support member defining a passage structured to receive and engage a portion of the connector. As the connector is received in the passage, the branches of the connector move toward one another and force the receptacle toward the closed configuration wherein the connector is fixed relative to the post portion. Other systems, apparatuses and methods for vertebral stabilization are also disclosed.