Spinal Motion Restoration Prosthetic System
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Solution Overview
Problem
Current spinal fusion and disc arthroplasty procedures are limited in addressing severe spinal deformities such as scoliosis and curvature abnormalities, often immobilizing the spine and failing to correct severe spinal dislocations and deformities effectively.
Innovation Solution
A motion-preserving joint replacement system is introduced, involving the shaping and reshaping of spinal bones to implant a prosthetic system with upper and lower joint components that allow for relative movement between vertebrae, including a posterior support to secure the lower joint component to the pedicle, facilitating correction of spinal alignment through surgical planning and robotic guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If spinal fusion procedures are used to treat spinal deformities, then spinal stability is improved, but spinal motion is lost and severe deformities cannot be corrected
Solution Approach 1:
The prosthetic system is divided into separate upper and lower joint components that can independently articulate, allowing each component to be optimized for stability while maintaining overall spinal motion. The upper joint component interfaces with the upper vertebra and the lower joint component interfaces with the lower vertebra, creating segmented articulation points that preserve spinal flexibility.
Solution Approach 2:
The prosthetic system incorporates dynamic articulating surfaces that allow controlled motion between vertebrae. The articulating joint includes curved surfaces designed to accommodate physiological spinal movements while providing stability, enabling the system to adapt to dynamic spinal loads and movements rather than rigidly fixing the spine.
2Ease of operation
If traditional disc arthroplasty is used, then spinal motion is preserved, but severe spinal deformities and dislocations cannot be corrected
Solution Approach 1:
The upper and lower joint components feature asymmetric articulating surfaces with different curvature radii and geometric configurations. This asymmetry allows the system to correct angular deformities and malalignments by creating a mechanical advantage that restores proper spinal alignment while maintaining motion capability.
Solution Approach 2:
The prosthetic system allows for adjustment of critical parameters including intervertebral height, lordotic angle, and rotational alignment. By changing these geometric parameters during implantation, the system can correct severe deformities and dislocations while preserving physiological spinal motion through the articulating joint.
3Adaptability or versatility
If motion-preserving joint replacement is implemented, then spinal deformity correction and motion preservation are achieved, but device complexity increases
Solution Approach 1:
The upper and lower joint components are designed to be integrated into a single prosthetic system that combines deformity correction functionality with motion preservation in one implant assembly. This merging eliminates the need for separate fusion devices and motion-preserving devices, reducing overall procedural complexity despite the advanced functionality of individual components.
Data Source
AI summary
Disclosed are systems, devices, methods and surgical procedures for altering and/or correcting the alignment of adjacent bones, including bones of the spine.