Vertebral Implant Sliding Reducing Plate for Spondylolisthesis Correction
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Solution Overview
Problem
Current methods for correcting vertebral misalignment, such as spondylolisthesis, often require invasive surgeries and may not effectively maintain stabilization of the vertebrae in the corrected position, leading to potential complications and prolonged recovery times.
Innovation Solution
A vertebral implant system comprising a frame assembly with a central lumen and a reducing member, secured to adjacent vertebrae via fasteners, and an actuator to adjust the position of the reducing member relative to the frame, allowing for precise realignment and stabilization of dislocated vertebral bodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vertebral fusion is performed by removing the native disc and fixing an apparatus between misaligned vertebrae, then stabilization and correction of spondylolisthesis is achieved, but surgical complexity and recovery time are prolonged
Solution Approach 1:
The implant is divided into distinct functional components: a frame assembly with lateral portions for vertebral attachment, a central portion for disc space occupation, and a reducing member with sliding mechanism. This segmentation allows each component to perform its specific function while simplifying the overall surgical procedure.
Solution Approach 2:
The reducing member is designed with a sliding mechanism that allows dynamic adjustment of vertebral alignment during surgery. The actuator enables the reducing member to move along the central portion, providing real-time control over the degree of reduction and stabilization.
2Reliability
If traditional vertebral fusion methods are used, then misaligned vertebrae are stabilized, but the corrected position may not be effectively maintained during ossification
Solution Approach 1:
The implant provides preliminary stabilization and positioning of the vertebrae in the corrected alignment before ossification occurs. The frame assembly and reducing member work together to maintain the desired vertebral position throughout the healing process, ensuring proper alignment is preserved during the critical ossification phase.
Solution Approach 2:
The implant continuously maintains stabilization and alignment control throughout the entire ossification period. The sliding mechanism allows for continuous adjustment and maintenance of the corrected position, providing ongoing support rather than discrete stabilization points.
3Manufacturing precision
If invasive surgery is performed to correct vertebral misalignment, then realignment is achieved, but patient outcomes are compromised due to complications and prolonged recovery
Solution Approach 1:
The traditional mechanical fixation system is replaced with a sliding mechanism actuated by an actuator. This substitution allows for precise control of vertebral realignment through controlled movement of the reducing member, achieving accurate alignment while reducing the invasiveness and complexity of the surgical procedure.
Data Source
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AI summary
Embodiments of devices and methods of correcting vertebral misalignment, including, e.g., spondylolisthesis, are disclosed. In one embodiment, a vertebral implant may include an assembly configured to be secured to a first vertebral body, wherein the assembly Includes a frame made of a first material and at least one end plate made of a second material different than the first material; a reducing plate configured to be slidably received over the central portion, wherein the reducing plate is configured to be secured to a second vertebral body; and an actuator configured to move the reducing plate relative to the frame.