Patella Resection Guide With Integrated Drill Handle
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Solution Overview
Problem
Current orthopaedic surgical instruments lack a comprehensive and efficient system for accurately resecting and preparing the patella for prosthetic implantation, particularly in terms of precise alignment and secure fixation of prosthetic components.
Innovation Solution
An orthopaedic surgical instrument assembly featuring a multifunctional handle with a patella resection guide and drill guide, which includes a locking mechanism, lever release mechanism, and clamping elements to securely engage and position the patella, allowing for precise resection and drilling of guide holes for prosthetic component fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional orthopaedic surgical instruments are used for patella resection and preparation, then the surgical procedure can be performed, but the precision of alignment and accuracy of prosthetic component fixation is insufficient
Solution Approach 1:
The surgical instrument assembly integrates multiple functions into a single system: the handle assembly serves as both a control mechanism and a positioning device, the patella resection guide combines alignment guidance with resection control, and the drill guide integrates hole positioning with depth control. This multi-functionality achieves high precision alignment and fixation accuracy while managing device complexity through consolidation rather than multiplication of separate tools.
Solution Approach 2:
The instrument assembly performs preliminary positioning and alignment actions before the actual resection and drilling operations. The guide structures are pre-configured to establish accurate reference positions, and the handle assembly pre-positions the surgical tools relative to the patella, ensuring that when the resection and drilling occur, the alignment precision is already established through the preliminary guide positioning.
2Productivity
If multiple separate surgical tools are used for patella resection and drilling, then each function can be performed, but the efficiency of the surgical procedure is reduced
Solution Approach 1:
The patent merges the patella resection guide and drill guide into a single integrated handle assembly that can perform both resection guidance and drilling operations. The guide structures are combined within one handle, allowing the surgeon to transition between resection and drilling functions without changing tools, thereby improving surgical efficiency while reducing the total number of separate instruments required.
Solution Approach 2:
The handle assembly incorporates dynamic elements that allow it to adapt between different surgical phases. The guide structures can be positioned and locked in different configurations to suit either resection or drilling operations, and the handle itself can be maneuvered to provide the necessary degrees of freedom for each function, enabling efficient transition between tasks without tool changes.
3Reliability
If manual positioning methods are used for patella engagement, then the surgical instrument can be simple, but the reliability of patella positioning and guide hole placement is insufficient
Solution Approach 1:
The instrument assembly incorporates self-aligning and self-locking features that automatically ensure reliable positioning without requiring complex manual adjustment procedures. The guide structures are designed to self-position on the patella anatomy, and the locking mechanisms automatically secure the guide in place, providing reliable positioning and guide hole placement while maintaining ease of operation through automatic rather than manual positioning.
Solution Approach 2:
The patent replaces purely manual positioning methods with enhanced mechanical positioning systems that incorporate guide structures, alignment features, and locking mechanisms. These mechanical systems provide more reliable and consistent positioning than manual methods alone, while the design of these mechanical features maintains ease of operation by providing tactile feedback and automatic engagement rather than requiring complex manual adjustment.
Data Source
AI summary
A method of surgically preparing a patella for implantation of a patella prosthetic component is disclosed.