Monolithic Spinal Rod Insertion Instrument with Retaining Arms
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Solution Overview
Problem
Current instruments for inserting and securing spinal rods into orthopedic devices are cumbersome, often requiring two hands and a separate tool for alignment and fastening, making them difficult to use during spinal fixation procedures.
Innovation Solution
A hollow, monolithic spinal rod insertion instrument with moveable arms and a retaining aperture that securely holds the rod in place, allowing for single-handed operation and integrated fastener insertion, eliminating the need for additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional instruments are used for inserting and securing spinal rods, then the rod can be inserted into the coupling element, but the procedure requires two hands and separate tools for alignment and fastening, increasing device complexity and ease of operation difficulty
Solution Approach 1:
The patent combines multiple functions (rod insertion, alignment, and fastener insertion) into a single integrated instrument. The instrument includes a body with a passageway for rod insertion, alignment features for positioning, and a fastener insertion mechanism, eliminating the need for separate tools and reducing the number of hands required during the procedure.
Solution Approach 2:
The instrument is designed to perform multiple functions: it can insert the spinal rod into the coupling element, align the rod properly using integrated alignment features, and insert the fastener to secure the rod. This multi-functional design reduces the number of separate instruments needed and simplifies the overall procedure.
2Productivity
If separate instruments are used for rod insertion and fastener insertion, then each function can be performed with specialized tools, but the procedural time and complexity increase
Solution Approach 1:
The patent merges rod insertion and fastener insertion functions into a single instrument, allowing both actions to be performed sequentially without switching tools. The instrument includes a passageway for rod insertion and an integrated fastener insertion mechanism, enabling the surgeon to complete both tasks with one instrument and reduce procedural time.
Solution Approach 2:
The instrument is designed with pre-configured alignment features and positioning mechanisms that prepare the rod and coupling element for secure fastening before the fastener is inserted. This preliminary alignment and positioning reduce the time required for adjustments during the procedure.
Data Source
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AI summary
A spinal rod insertion instrument includes a hollow, monolithic body having a proximal end and a distal end. The body defines a passageway that extends along a first axis between the proximal and distal ends. The distal end includes first and second arms defining a slot therebetween. The first and second arms are configured to releasably retain a spinal rod therebetween. Also provided is a method of securing a spinal rod to a coupling element attached with a pedicle screw.