Intraosseous Access Assembly With Multi-Mode Bone Insertion
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Solution Overview
Problem
Existing IO insertion methods face challenges such as time and dexterity requirements, complexity of powered devices, and the need for specific skills or resources, making immediate intramedullary/vascular access difficult in emergency settings.
Innovation Solution
An intraosseous access assembly with a driver, stylet, and catheter hub that allows for manual, impact, or power-assisted insertion, featuring ergonomic design, interchangeable tool compatibility, and a cutting tip for enhanced penetration through bone, along with a fenestrated catheter for improved fluid delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual assisted insertion is used, then device complexity is reduced, but insertion time and dexterity requirements increase
Solution Approach 1:
The driver is segmented into distinct functional components: a gripping portion for manual handling, a cutting portion with prongs for bone penetration, and a driving portion for tool attachment. This segmentation allows the device to support multiple insertion methods while maintaining operational simplicity.
Solution Approach 2:
The driver design transitions from static to dynamic functionality by incorporating interchangeable tool bit compatibility. The driving portion can accept different insertion tools (manual, impact, or powered), allowing the device to adapt its insertion method based on available resources and provider skill level.
2Speed
If impact assisted insertion is used, then insertion speed is improved, but provider skill requirements and handling difficulty increase
Solution Approach 1:
The driver is designed as a universal interface that can accommodate multiple insertion methods through its driving portion. The same driver structure accepts manual gripping, impact tool attachment, and powered drill attachment, eliminating the need for multiple specialized devices and reducing provider training requirements.
3Manufacturing precision
If powered drill assisted insertion is used, then insertion precision is improved, but device cost and resource requirements increase
Solution Approach 1:
The driver serves as an intermediary device between the insertion tool and the stylet/catheter system. By placing the complex driving portion at the interface with external tools rather than integrating powered mechanisms directly into the stylet, the design achieves precise controlled insertion while keeping the majority of the device simple and low-cost.
Data Source
AI summary
An intraosseous (IO) access assembly includes a driver defined between a proximal driver end (PDE) and a distal driver end (DDE). The driver defines a gripping portion between the PDE and the DDE. A stylet extends from the DDE of the driver. The stylet extends between a proximal stylet end (PSE) and a distal stylet end (DSE). A catheter hub is removably couplable to the driver at the DDE. A catheter extends from the catheter hub. The catheter extends between a proximal catheter end (PCE) and a distal catheter end (DCE). The catheter defines a longitudinal opening at the DCE. The stylet extending from the DDE of the driver is selectively received through the catheter hub and the catheter. The stylet having a tip defined at the DSE and extending through the opening at the DCE. The intraosseous (IO) access assembly forming a cutting tip at the DCE and DSE.