Intraosseous Coupler Assembly for Fast Needle Release and Control
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Solution Overview
Problem
Current intraosseous access technologies face challenges in efficiently and quickly inserting and removing IO devices from bone marrow sites, particularly in obtaining large quantities of bone marrow for diagnostic, transplantation, and research purposes, while minimizing trauma and ensuring precise control.
Innovation Solution
The development of coupler assemblies and powered drivers that enable quick engagement and disengagement of IO devices, allowing for rapid insertion and removal, with features like hexagonal cross-sections for secure coupling, Luer lock fittings for fluid communication, and resilient materials for secure attachment and easy rotation, facilitating 'hands-free' operation and minimizing tissue damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional IO devices are used for bone marrow sampling, then the procedure can be completed, but the insertion and removal process is time-consuming and causes excessive trauma
Solution Approach 1:
The IO device is divided into separate components: a reusable driver mechanism and a disposable needle assembly. The driver contains a quick-release latch system that segments the coupling mechanism, allowing rapid disengagement of the needle from the driver without manual manipulation, thus reducing procedural time while maintaining control.
Solution Approach 2:
The coupler assembly is pre-configured with spring-loaded latches and alignment features before the procedure. The resilient material components are pre-positioned to automatically engage and lock the needle hub to the driver upon insertion, eliminating the need for manual coupling adjustments during the critical sampling phase.
2Reliability
If traditional coupling mechanisms are used, then the IO device can be attached to the driver, but secure attachment and easy rotation are difficult to achieve simultaneously
Solution Approach 1:
The needle hub and driver coupling interfaces feature asymmetric hexagonal cross-sections with specific flat orientations. This asymmetric geometry provides mechanical keys that engage with corresponding recesses, ensuring secure attachment while allowing controlled rotation in the intended direction. The asymmetric design prevents unintended rotation while maintaining ease of controlled maneuvering during insertion.
Solution Approach 2:
The coupling system transitions from a static rigid connection to a dynamic resilient connection. Spring-loaded latches and elastomeric materials allow the coupling to adapt during rotation, providing friction-based grip for security while permitting smooth controlled movement. The dynamic system maintains secure attachment during the procedure but allows easy release when needed.
3Measurement precision
If manual insertion methods are used, then the IO device can be inserted into bone marrow, but precise control and rapid removal are difficult to achieve
Solution Approach 1:
The driver mechanism incorporates self-aligning features with tapered leading edges and complementary geometric profiles on the needle hub. Upon contact with the bone surface, the asymmetric geometry automatically orients the needle at the correct angle without requiring manual adjustment, providing precise control while simplifying the operator's task. The self-service alignment reduces both insertion time and procedural complexity.
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 1E~2
AI summary
This disclosure includes various embodiments of couplers for coupling intraosseous (IO) devices and drivers, and various embodiments of drivers and kits.