Spinal Reduction Apparatus with Threaded Knob
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Solution Overview
Problem
Conventional spinal surgical procedures for reducing vertebral bodies are limited by a restricted range of operation, lack of adaptability to patient anatomy, and require continuous surgeon intervention, leading to tissue trauma and extended recovery times.
Innovation Solution
The development of a reduction apparatus comprising a sleeve and a knob with threaded portions, allowing incremental and controlled reduction of vertebral bodies through a system that includes an extender and a reducer, enabling quick-coupling and adaptability to patient anatomy without continuous manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional spinal surgical procedures are used for reducing vertebral bodies, then the surgeon can perform the reduction, but the range of operation is restricted and adaptability to patient anatomy is limited
Solution Approach 1:
The reduction apparatus is divided into multiple separable components including a reducer, extender, and various coupling mechanisms. This segmentation allows the system to be adapted to different patient anatomies by selecting and combining appropriate components, while also simplifying the overall device complexity through modular design.
Solution Approach 2:
The apparatus incorporates dynamic elements such as threaded portions allowing incremental adjustment, releasable couplings that can be engaged or disengaged, and mechanisms that allow continuous adaptation during the surgical procedure to match patient-specific anatomical variations.
2Object-affected harmful factors
If conventional reduction methods are used, then vertebral bodies can be reduced, but continuous surgeon intervention is required leading to tissue trauma and extended recovery times
Solution Approach 1:
The reduction apparatus is designed to maintain vertebral body reduction through self-retaining mechanisms including threaded portions that lock in position and releasable couplings that automatically secure components. This eliminates the need for continuous surgeon intervention, reduces tissue trauma from repeated manipulation, and allows the device to maintain reduction independently once positioned.
3Loss of time
If minimally invasive procedures are used, then recovery time is reduced and tissue trauma is minimized, but flexibility of operation and range of reduction are limited
Solution Approach 1:
The modular segmented design enables minimally invasive insertion while maintaining operational flexibility. Each component can be inserted through small incisions and then assembled in situ, combining the benefits of minimally invasive approach with the adaptability of a complex reduction system.
Solution Approach 2:
The dynamic adjustment mechanisms including threaded portions and releasable couplings allow the apparatus to provide full range of reduction movements while maintaining minimally invasive access, enabling flexible operation without requiring large incisions or extensive tissue disruption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a flexible and adaptable method for vertebral body reduction, reducing tissue trauma and shortening recovery times by allowing incremental adjustments and increased range of operation without constant surgeon intervention.
Implementation Method 1
The sleeve has a threaded portion. Similarly, the knob has a threaded portion that is in engagement with the threaded portion of the sleeve to provide reduction of the vertebra or vertebral body.
Data Source
AI summary
A system for reduction of vertebral bodies (or vertebrae) various embodiments includes a reducer, and extender, and a hollow tube. The reducer couples to the extender, which in turn couples to an elongated member, such as a rod, and to a bone fastener assembly. The reducer allows reduction of the vertebral body incrementally, and by a desired amount. The reducer may include or may be used in conjunction with a holding device or holder in order to hold or keep the amount of reduction constant or steady once the desired amount of reduction has been obtained. The reducer may use one of several embodiments, including embodiments that use threaded assemblies or members, inclining members or wedges, offset cams, scissor jacks, and/or levers.