Lamina Plate Assembly for Spinal Stabilization
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Solution Overview
Problem
Current spinal laminectomy procedures often lead to spinal deformity, destabilization, and complications such as kyphosis, epidural scarring, and difficulty in reoperation due to loss of posterior tension bands and inadequate decompression, necessitating a solution for lamina support and spinal cord protection.
Innovation Solution
A lamina plate assembly with a generally elongate body having securing portions that attach to vertebrae, providing structural support, muscle attachment points, and adjustable configurations to restore posterior tension bands and facilitate direct spinal cord decompression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If laminectomy is performed without instrumentation, then decompression of the spinal cord is achieved, but spinal deformity and kyphosis occur due to loss of posterior tension bands
Solution Approach 1:
A lamina plate assembly serves as an intermediary structure to replace the removed posterior elements. The plate is secured to the vertebral body and provides a new attachment site for extensor muscles, thereby mediating the restoration of posterior tension bands and maintaining spinal curvature stability after laminectomy
Solution Approach 2:
The lamina plate assembly is divided into multiple segments including a body portion and extending feet that can be independently positioned and secured to different vertebral structures. This segmentation allows the implant to accommodate varying spinal anatomies and provide distributed support along the posterior elements
2Stability of the object's composition
If laminectomy with fusion is performed, then spinal stabilization is achieved, but epidural scarring forms making reoperation difficult
Solution Approach 1:
The lamina plate assembly functions as a temporary structural solution that provides stabilization without requiring permanent fusion. By offering mechanical support and muscle attachment during the healing period, it allows for potential future revision surgery with reduced scarring complications compared to fusion procedures
3Ease of manufacture
If laminoplasty is performed to preserve posterior elements, then less invasive approach is achieved, but bilateral decompression cannot be accomplished
Solution Approach 1:
The lamina plate assembly enables complete removal of the posterior elements (laminectomy) while providing replacement support structure. This extraction approach allows for full bilateral decompression of the spinal cord by removing all obstructing posterior structures, unlike laminoplasty which preserves elements and limits decompression capability
4Object-affected harmful factors
If posterior elements are removed during laminectomy, then direct decompression of spinal cord is achieved, but muscle attachment points are lost
Solution Approach 1:
The lamina plate assembly serves multiple functions: it provides structural support to replace removed posterior elements, creates new muscle attachment points on its surface, and maintains spinal alignment. This multi-functional design addresses both decompression and muscle reattachment requirements in a single implant
Data Source
AI summary
Lamina plate assemblies, systems, and methods thereof. A lamina plate assembly may be configured to provide lamina support following laminectomy, for example, in cervical and lumbar cases. The lamina plate assembly may include a generally elongate body having a first free end, a second free end, and a posterior portion disposed between the first free end and the second free end. Different embodiments of securing portions are used to secure the lamina plate assembly to a vertebra.