Rod Link Reducer for Spinal Deformity Correction
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Solution Overview
Problem
Conventional methods for correcting severe spine deformities, such as segmental reduction, global derotation, and apical translation, are often unsatisfactory and lack a direct and controlled approach for spinal correction.
Innovation Solution
A rod link reducer assembly comprising a manipulator rod with a handle, a tip for securing temporary rods, and a rod manipulator joint with coupling clamps and a locking mechanism, allowing for simultaneous, controlled correction of spinal deformities in all planes of motion, with various tip options for multiple rod sizes and attachment configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional correction methods (segmental reduction, global derotation, apical translation) are used, then spinal deformity correction is attempted, but the correction is unsatisfactory and lacks direct control
Solution Approach 1:
The rod link reducer assembly serves as an intermediary device between the surgeon's manual manipulation and the spinal column. It provides a mechanical linkage system with coupling clamps that attach to posts on manipulating rods, enabling precise transmission of corrective forces while maintaining direct control over the correction process
Solution Approach 2:
The device segments the correction process into controllable components: multiple manipulating rods with individual posts, separate coupling clamps for each rod, and a joint rod that coordinates their movement. This segmentation allows independent adjustment and control of different spinal segments during correction
2Stability of the object's composition
If a rigid coupling structure is used to maintain anatomical alignment, then stability is improved, but adaptability to different anatomical requirements is reduced
Solution Approach 1:
The coupling clamps are designed with movable components that allow dynamic adjustment during the correction process. The clamps can be positioned at different locations along the joint rod and can be released or tightened as needed, providing both stability when locked and adaptability when adjusted
Solution Approach 2:
The rod link reducer assembly is designed to accommodate multiple rod sizes and different anatomical configurations through universal coupling mechanisms. The coupling clamps can engage with posts of varying positions, and the device can be configured for different spinal deformity patterns, making it adaptable to diverse patient anatomies while maintaining stable correction
Data Source
AI summary
Rod link reducer assemblies, systems, and methods thereof. The rod link reducer assembly provides a manipulator rod having a first end, a second end, and an elongate body extending along a body axis between the first end and the second end. A post extends outwardly from the rod. A rod manipulating joint comprise an elongate joint rod extending along a joint rod axis, a first coupling clamp disposed along the joint rod, the first coupling clamp releasably connectable to the post, and a second coupling clamp disposed along the joint rod adjacent to and rotatable about the joint rod relative to the first coupling clamp. The second coupling clamp is releasably connectable to a shaft. A biasing member is adapted to bias the second clamp against the first clamp.