Delivery Adapter Micro-Tube Prevents Embolic Dilution
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Solution Overview
Problem
Existing delivery systems for high viscosity liquid embolic materials often result in dilution due to residual flushing liquids in catheter hubs, which can compromise the effectiveness of the embolic material during vascular treatments.
Innovation Solution
A delivery adapter with a micro-tube configuration that minimizes contact between the embolic liquid and the catheter hub reservoir, using a proximal connector, distal connector, and bridging piece to directly transfer the embolic material through a micro-tube within the catheter hub, thereby reducing dilution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a standard catheter hub is used for delivering liquid embolic material, then the delivery system is simple and easy to operate, but the residual flushing liquid in the catheter hub causes dilution of the embolic material
Solution Approach 1:
The patent introduces a delivery adapter as an intermediary component between the syringe and catheter hub. This adapter contains a microtube that creates a separate flow path, allowing the embolic material to be delivered without contacting the residual flushing liquid in the catheter hub reservoir, thus preventing dilution while maintaining ease of operation
Solution Approach 2:
The delivery system is segmented into distinct components: the catheter hub with its reservoir, the delivery adapter with microtube, and the syringe. This segmentation isolates the embolic material delivery path from the flushing liquid in the catheter hub, preventing mixing and dilution while keeping the overall system easy to operate
2Productivity
If the embolic material is delivered through the catheter hub reservoir, then the delivery path is direct, but the embolic material contacts residual flushing liquid causing dilution
Solution Approach 1:
The microtube within the delivery adapter serves as an intermediary delivery path that bypasses the catheter hub reservoir. The embolic material flows through this separate microtube channel, maintaining its concentration by avoiding contact with residual flushing liquid, while still achieving efficient delivery to the treatment site
3Reliability
If a delivery adapter with micro-tube is used to prevent dilution, then the integrity of embolic material is maintained, but the device complexity increases
Solution Approach 1:
The delivery adapter with microtube acts as a compact intermediary device that prevents dilution of embolic material. While it adds a component to the system, the adapter is designed to be integrated into the existing catheter hub interface, minimizing the increase in overall device complexity while reliably maintaining embolic material integrity
Data Source
AI summary
A delivery adapter which may be used as an interface between a syringe and a catheter hub is described.