Spinal Disc Prosthesis for Deformity Correction With Motion Preservation
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Solution Overview
Problem
Existing spinal fusion and disc arthroplasty procedures often fail to effectively address severe spinal deformities and curvature abnormalities, such as scoliosis, while preserving spinal motion and stability.
Innovation Solution
A prosthetic system is implanted between upper and lower vertebrae, comprising upper and lower joint components with articulating surfaces, allowing relative movement, and a posterior support secured to the pedicle, with optional fixation elements, to correct spinal alignment and deformities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spinal fusion procedures are performed to treat spinal joints and reduce pain, then pain reduction is achieved, but spinal motion is lost and severe spinal deformities cannot be corrected
Solution Approach 1:
The prosthetic disc device incorporates movable components including a movable plate that can translate and rotate relative to the vertebral body, allowing the implant to dynamically preserve spinal motion while providing structural support and pain relief, directly resolving the contradiction between stability and motion preservation
Solution Approach 2:
The prosthetic disc is divided into multiple functional segments including a fixed plate, movable plate, and articulating surfaces, allowing different portions to perform different functions - the fixed plate provides anchoring for pain relief while the movable plate preserves spinal motion, resolving the contradiction through functional segmentation
2Ease of operation
If traditional disc arthroplasty is performed to preserve spinal motion, then spinal motion is maintained, but severe spinal deformities including scoliosis cannot be corrected
Solution Approach 1:
The movable plate design allows the prosthesis to adapt to and correct severe spinal deformities through controlled movement and positioning, enabling the device to simultaneously preserve spinal motion and correct scoliosis and other curvature abnormalities
Solution Approach 2:
The device allows for adjustment of positional parameters including translation and rotation of the movable plate, enabling correction of severe spinal deformities while maintaining spinal motion through programmable or adjustable geometric parameters
3Adaptability or versatility
If complex surgical procedures are used to correct severe spinal deformities, then deformity correction is achieved, but surgical precision and patient recovery are compromised
Solution Approach 1:
The surgical system performs preoperative planning and creates a virtual surgical model before the actual procedure, allowing precise determination of implant positioning and orientation, which improves surgical precision while enabling complex deformity corrections
Solution Approach 2:
The system replaces traditional mechanical surgical guidance with image-guided navigation and robotic assistance, using digital imaging and computer-controlled positioning to achieve higher precision in deformity correction with reduced surgical complexity
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.