Adjustable Laminoplasty Fixation Device for Spinal Decompression
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Solution Overview
Problem
Traditional laminoplasty fixation devices require custom selection and shaping before surgery, which is time-consuming and inefficient, as they need to be tailored to specific patient anatomy for effective spinal canal decompression.
Innovation Solution
Development of adjustable laminoplasty fixation devices with bone engaging portions that can be adjusted in spacing during implantation, featuring bendable, rotatable, or slidable components to accommodate varying vertebral dimensions, allowing for one-size-fits-all solutions and reducing the need for preoperative measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional fixed-size laminoplasty plates are used, then the plate can be securely fixed to the vertebrae, but the plate requires custom selection and shaping before each surgery which is time-consuming
Solution Approach 1:
The plate incorporates adjustable components including a rod that can slide within the plate body and a set screw mechanism that allows the distance between the first and second bone engaging portions to be varied. This dynamic adjustment capability eliminates the need for custom shaping before surgery while maintaining secure fixation to the vertebrae.
Solution Approach 2:
The plate design allows changing the spacing parameter between bone engaging portions by sliding the rod to different positions and securing it with the set screw. This parameter adjustment enables the same plate to accommodate different vertebral dimensions without requiring custom manufacturing or pre-shaping.
2Adaptability or versatility
If custom-sized plates are selected for each patient, then the implantation can accommodate specific anatomical requirements, but the surgeon must measure and select the appropriate plate size prior to surgery
Solution Approach 1:
The plate is designed as a universal implant that can accommodate multiple vertebral sizes and configurations through its adjustable mechanism. The single plate design with variable spacing eliminates the need for multiple custom-sized plates and complex preoperative selection processes, while still adapting to specific anatomical requirements.
3Device complexity
If the plate spacing is fixed during manufacturing, then the plate structure is simple, but the plate cannot accommodate varying vertebral dimensions
Solution Approach 1:
The plate is divided into separable components including the plate body, the rod, and the set screw mechanism. This segmentation allows the rod to be positioned at different locations along the plate body, enabling adjustment of the spacing between bone engaging portions while maintaining a relatively simple overall structure.
Data Source
AI summary
Devices and methods for treating degenerative conditions of the spine or for alleviating pain or discomfort associated with the spinal column are disclosed. In particular, laminoplasty fixation devices and methods are disclosed. Also disclosed, is a vertebral implant comprising a first bone engaging portion configured for securing to a first cut portion of a vertebra and a second bone engaging portion configured for securing to a second cut portion of the vertebra. A body portion is provided for associating the first and second bone engaging portions at a preselected spacing from each other, wherein the implant is adjustable to select said spacing.