Multidirectional Tibial Tubercle Transfer Jig
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Solution Overview
Problem
Existing methods for tibial tubercle transfer in orthopedic surgery are complex, time-consuming, less precise, not highly reproducible, technique-restrictive, and procedurally invasive, necessitating a simpler, faster, more precise, and less invasive approach.
Innovation Solution
A method and apparatus involving a jig with converging cutting guides and an extender for making precise saw cuts in the tibia, allowing for the transfer of bone blocks and repositioning of the tibial tubercle, enabling multidirectional transfers with adjustable instrumentation for precise alignment and fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If prior art approaches for transferring the tibial tubercle are used, then the transfer can be performed, but the process becomes complex and time-consuming
Solution Approach 1:
The procedure is divided into distinct modular steps: positioning the jig against the anterior tibia, making first and second saw cuts to free a bone block, making a third saw cut to free another bone block, and then transferring the bone blocks to achieve multidirectional tubercle relocation. This segmentation allows each step to be performed systematically and efficiently
Solution Approach 2:
A jig serves as an intermediary device that guides the saw cuts and ensures precise positioning. The jig includes cutting guides that direct the saw to make accurate cuts while the tibial tubercle is being transferred, eliminating the need for complex freehand techniques and reducing procedural time
2Manufacturing precision
If prior art approaches for transferring the tibial tubercle are used, then the transfer can be performed, but precision is reduced
Solution Approach 1:
The jig acts as a precision intermediary tool with cutting guides that ensure accurate saw cut positioning. The guides are configured to direct cuts at specific angles and locations, guaranteeing consistent and precise bone block separation and transfer regardless of surgeon experience level
Solution Approach 2:
The jig allows adjustment of cutting parameters including the angle and depth of saw cuts. By modifying these parameters, the surgeon can achieve precise control over the size and orientation of bone blocks to be transferred, enabling accurate multidirectional repositioning of the tubercle
3Reliability
If prior art approaches for transferring the tibial tubercle are used, then the transfer can be performed, but reproducibility is reduced
Solution Approach 1:
The jig is designed as a universal device that can accommodate various transfer directions and bone block sizes. The same basic jig structure with adjustable cutting guides can perform medial, lateral, anterior, posterior, and multidirectional transfers, ensuring consistent results across different clinical scenarios and surgeons
Solution Approach 2:
The cutting guides on the jig can be adjusted to change the parameters of the saw cuts, including angle, depth, and orientation. This allows the same device to produce reproducible results across different patients and surgical situations by simply adjusting the guide parameters rather than requiring different techniques
4Adaptability or versatility
If prior art approaches for transferring the tibial tubercle are used, then the transfer can be performed, but the procedure becomes technique-restrictive
Solution Approach 1:
The jig provides a universal platform that eliminates technique restrictions by accommodating multiple transfer directions through adjustable cutting guides. Whether medial, lateral, anterior, posterior, or multidirectional transfer is needed, the same jig can be configured to perform the procedure, greatly increasing surgical versatility
Solution Approach 2:
The cutting guides on the jig are designed to be adjustable and reconfigurable, allowing dynamic adaptation to different surgical requirements. The guides can be repositioned and reoriented to accommodate various bone block sizes and transfer directions, making the procedure adaptable rather than restrictive
5Object-affected harmful factors
If prior art approaches for transferring the tibial tubercle are used, then the transfer can be performed, but invasiveness increases
Solution Approach 1:
The jig serves as a precise intermediary guide that enables accurate bone block separation with minimal invasive disruption to surrounding tissues. By guiding the saw cuts precisely along predetermined paths, the procedure achieves high cutting precision while minimizing collateral damage to soft tissues and blood vessels
Data Source
AI summary
A method and apparatus for performing a multidirectional tibial tubercle transfer, comprising: positioning a jig against the anterior portion of the tibia, the jig comprising first and second cutting guides which simultaneously converge towards one another as they extend distally down the tibia and posteriorly towards the tibia; cutting first and second saw cuts into the tibia; attaching an extender to the jig, wherein the extender comprises a third cutting guide which simultaneously converges towards the first cutting guide as the third cutting guide extends distally down the tibia and posteriorly towards the tibia; cutting a third saw cut into the tibia; freeing a first and second bone block from the tibia; freeing a second bone block from the tibia; and transferring the position of the first bone block relative to the tibia.