Facet Joint Stabilization Band for Spinal Motion Preservation
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Solution Overview
Problem
Current treatments for facet joints in the spinal column, such as prosthetic replacement or fixation, often result in loss of natural movement and are not suitable for all cases, as they fail to address the variability in facet joint geometry and interaction with other spinal components, leading to unmet needs for stabilization and augmentation therapies that preserve motion segment functionality.
Innovation Solution
The development of facet joint stabilization, augmentation, and immobilization therapies using stabilization bands, facet joint spacers, and fasteners that allow for repositioning of articular processes, distraction between joint components, and rigid fixation, respectively, to address malalignment and pain without sacrificing spinal mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If prosthetic replacement or fixation is used for facet joints, then joint stability is improved, but natural movement is lost
Solution Approach 1:
The patent employs a flexible stabilization band that wraps around the facet joint to provide stabilization while preserving natural motion. The band's flexible nature allows it to accommodate physiological movement of the joint during flexion, extension, and rotation, unlike rigid prosthetic replacements that would restrict motion.
Solution Approach 2:
The stabilization system transitions from static rigid fixation to dynamic stabilization where the band can adapt its tension and positioning. The system allows controlled movement within physiological limits while maintaining joint alignment, enabling the joint to move naturally during different spinal motions.
2Reliability
If rigid fixation is used for facet joints, then joint immobilization is improved, but spinal mobility is reduced
Solution Approach 1:
The flexible band provides reliable stabilization through friction and anatomical engagement rather than rigid mechanical fixation. It maintains joint alignment and prevents excessive motion while allowing normal physiological movement, achieving immobilization where needed without sacrificing overall spinal mobility.
Solution Approach 2:
The stabilization band applies localized control at the facet joint level rather than rigidly fixing the entire spinal segment. This allows targeted stabilization of the affected joint while preserving mobility in adjacent motion segments, achieving local immobilization without global mobility loss.
3Adaptability or versatility
If facet joint therapies are designed to address variability in geometry, then adaptability is improved, but device complexity increases
Solution Approach 1:
The stabilization band is designed as a universal device that can accommodate various facet joint geometries through its flexible nature and adjustable positioning. The same basic device structure can be applied across different patients and joint configurations without requiring multiple specialized components, maintaining simplicity while achieving adaptability.
Solution Approach 2:
The system allows for parameter adjustments in band tension, positioning, and engagement depth to accommodate variations in facet joint geometry. By adjusting these parameters rather than changing the fundamental device structure, the system achieves adaptability to different anatomical configurations while maintaining device simplicity.
Data Source
AI summary
Various implementations for therapy to facet joints connecting vertebrae are disclosed including: A) Facet joint stabilization that may be implemented using stabilization band that maintains tension between two anchors. The stabilization band may be retained in any one of a number of ways including the use of an anti-slip device such as a mechanically deformed crimp that abuts one of the anchors. B) Facet joint augmentation may be implemented by dilating the facet joint and inserting a facet joint spacer before adding a facet joint stabilization assembly. The facet joint augmentation may include connecting a tail section of the facet joint spacer to the first anchor used in the facet joint stabilization assembly. C) Facet joint immobilization may be implemented by inserting a fastener across the facet joint and into the vertebra so that the assembled fastener expands inside the vertebra.