Hinged Spinal Implant for Controlled Bone Growth
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Solution Overview
Problem
Current spinal stabilization devices post-laminoplasty procedures face challenges in controlling bone regrowth direction, which can lead to increased pressure on the spinal cord and reduced procedure efficacy, and they often require wedges or spacers that may not provide adequate stabilization without causing further complications.
Innovation Solution
The development of spinal implants with hingedly connected fixation sections and a spacer section that can be inserted between bone structures, allowing for controlled bone growth and stabilization without the need for a wedge or spacer, utilizing materials like titanium and polymers to promote fusion and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional spinal stabilization devices are used post-laminoplasty, then spinal stabilization is achieved, but bone regrowth direction cannot be controlled leading to increased pressure on the spinal cord
Solution Approach 1:
The implant is divided into multiple sections: first fixation section, second fixation section, and spacer section. Each section serves a specific function - the fixation sections anchor to bone structures while the spacer section controls the gap and directs bone regrowth, thereby achieving reliable stabilization without uncontrolled bone pressure
Solution Approach 2:
The spacer section acts as an intermediary element between the first and second fixation sections. It maintains a controlled gap that guides bone regrowth in a specific direction, preventing uncontrolled bone growth from pressing on the spinal cord while still providing structural support
2Shape
If wedges or spacers are used for stabilization, then spinal alignment is improved, but complications increase due to inadequate stabilization
Solution Approach 1:
The invention merges the functions of traditional wedges/spacers with fixation mechanisms into a single integrated implant. The fixation sections with bone anchors provide reliable stabilization while the spacer section maintains proper alignment, eliminating the need for separate wedge or spacer components and reducing complications
3Stability of the object's composition
If rigid fixation is used to ensure stabilization, then spinal stability is improved, but flexibility and adjustability are reduced
Solution Approach 1:
The implant incorporates dynamic characteristics through its hinged connections between sections. The hinge allows controlled movement and adjustment during the healing process, providing flexibility and adaptability. As bone regrowth occurs, the structure transitions to a more rigid configuration, ensuring long-term stability while maintaining short-term adjustability
Data Source
AI summary
Embodiments herein are generally directed to spinal implants for use in orthopedic stabilization assemblies. In some embodiments, these implants may be used in conjunction with laminoplasty or laminectomy procedures.