Modular Shoulder Replacement Guide for Adjustable K-Wire Alignment
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Solution Overview
Problem
Existing shoulder replacement procedures face challenges with customized surgical guides that are time-consuming to fabricate and cannot be modified, leading to additional costs and limitations in making last-minute adjustments during surgery.
Innovation Solution
A customizable shoulder replacement instrumentation system that includes an alignment compass base, guide base component, radial offset insert, and K-wire guide tube, allowing for quick assembly and adjustment of orientation using alignment tools and locking mechanisms, enabling precise K-wire placement and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If customized surgical guides are fabricated using 3D printing, then manufacturing precision is improved, but fabrication time increases to hours or days
Solution Approach 1:
The surgical guide system is divided into separate modular components (guide base, radial offset insert, K-wire guide tube) that can be assembled intraoperatively. This segmentation allows each component to be manufactured separately and quickly assembled, eliminating the need for time-consuming monolithic 3D printing while maintaining precision through standardized interfaces and alignment features.
Solution Approach 2:
The guide system incorporates dynamic adjustment capabilities through rotatable components and alignment tools that allow real-time modification of K-wire orientation and position. The radial offset insert can be rotated to adjust angular orientation, and the K-wire guide tube can be positioned at different angles, enabling last-minute surgical adjustments without requiring a completely custom-fabricated guide for each modification.
2Manufacturing precision
If customized surgical guides are fabricated, then manufacturing precision is improved, but adaptability during surgery deteriorates as no last-minute adjustments can be made
Solution Approach 1:
The guide system incorporates dynamic adjustment capabilities through rotatable components and alignment tools that allow real-time modification of K-wire orientation and position. The radial offset insert can be rotated to adjust angular orientation, and the K-wire guide tube can be positioned at different angles, enabling last-minute surgical adjustments without requiring a completely custom-fabricated guide for each modification.
Solution Approach 2:
The system allows changing critical parameters such as K-wire angular orientation and radial position through rotatable inserts and adjustable guide tubes. These parameter changes can be made intraoperatively by rotating the radial offset insert to different angular positions or adjusting the K-wire guide tube orientation, providing flexibility to adapt to surgical variations while maintaining precision through controlled mechanical adjustments.
3Manufacturing precision
If customized surgical guides are fabricated and sterilized, then manufacturing precision is improved, but device complexity and cost increase
Solution Approach 1:
The surgical guide system is divided into separate modular components (guide base, radial offset insert, K-wire guide tube) that can be assembled intraoperatively. This segmentation allows each component to be manufactured separately and quickly assembled, eliminating the need for time-consuming monolithic 3D printing while maintaining precision through standardized interfaces and alignment features.
Solution Approach 2:
The guide base component serves multiple functions: it provides the foundation for the entire guide assembly, accepts the radial offset insert, and can be positioned on the glenoid surface. The radial offset insert serves dual purposes by providing radial offset and enabling angular adjustment through rotation. This multi-functionality reduces the total number of separate components needed, simplifying the overall system while maintaining precision.
4Manufacturing precision
If customized surgical guides are fabricated, then manufacturing precision is improved, but productivity deteriorates due to separate sterilization and storage requirements
Solution Approach 1:
The surgical guide system is divided into separate modular components (guide base, radial offset insert, K-wire guide tube) that can be assembled intraoperatively. This segmentation allows each component to be manufactured separately and quickly assembled, eliminating the need for time-consuming monolithic 3D printing while maintaining precision through standardized interfaces and alignment features.
Data Source
AI summary
Systems and methods for a customized reusable guide for shoulder replacements. In an example embodiment, a method comprises providing an alignment compass base, wherein the alignment compass base is configured to enable rotational orientation of a radial offset insert and a K-wire guide tube with respect to a guide base, inserting the guide base component into the alignment compass base, inserting the radial offset insert into the guide base component, rotating, using a first alignment tool, the radial offset insert to a first orientation angle with respect to the guide base component, inserting the K-wire guide tube into the radial offset insert, rotating, using a second alignment tool, the K-wire guide tube to a second orientation angle with respect to the guide base component.