Catheter Hub Fluid Control With Ribbed Channels Against Stagnation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing catheter insertion devices lack effective mechanisms for controlling fluid flow and ensuring proper placement and safety during and after catheter insertion, particularly in controlling blood leakage and confirming vein access.
Innovation Solution
A fluid control component with a movable body that pierces a valve to enable fluid flow, featuring longitudinally extending ribs for additional channels, and a blood control component that prevents fluid stagnation by allowing fluid flow through both the conduit and external channels, along with a needle retraction system for safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a valve is disposed in the hub to control fluid flow, then blood leakage is prevented, but fluid stagnation occurs between the valve and the catheter
Solution Approach 1:
The fluid control component is divided into multiple functional segments: an internal conduit for primary fluid flow and external ribs that create additional flow channels. This segmentation allows fluid to bypass the valve-catheter interface where stagnation occurs, while the valve continues to prevent blood leakage through its sealing function.
Solution Approach 2:
The fluid control component acts as an intermediary element between the valve and the catheter. It provides alternative fluid pathways (through the conduit and external ribs) that mediate the flow around the potential stagnation zone, eliminating dead spaces while maintaining the valve's blood containment function.
2Device complexity
If a simple hub structure is used, then device complexity is reduced, but effective fluid flow control and blood leakage prevention are compromised
Solution Approach 1:
Multiple functions are merged into a single fluid control component: the body with internal conduit provides primary flow control, while external ribs add secondary flow channels. This integration achieves reliable fluid flow control and blood leakage prevention without requiring multiple separate components, thus limiting the increase in device complexity.
Solution Approach 2:
The fluid control component performs multiple functions simultaneously: it controls fluid flow through the conduit, prevents blood leakage by working with the valve, eliminates stagnation zones through external ribs, and provides structural support. This multi-functionality increases reliability without proportionally increasing complexity.
3Ease of operation
If the catheter remains exposed after insertion, then ease of operation is maintained, but safety risks increase from needle exposure
Solution Approach 1:
The needle retraction mechanism is activated in advance after catheter insertion is complete. The fluid control component's design with its conduit and ribs facilitates this preliminary retraction action by providing a smooth transition path, allowing the needle to be retracted into the hub before the user needs to access the catheter, thus eliminating exposure risk while maintaining ease of operation.
Data Source
AI summary
A fluid control component configured for controlling fluid flow through the hub of a catheter assembly during and after placement into the patient is disclosed. In one embodiment, the fluid control component comprises a body disposed within a cavity of the hub, the body being movable between a first position and a second position, wherein the body does not pierce a valve disposed in the hub when in the first position and wherein the body pierces the valve when in the second position. The body includes a conduit to enable fluid flow through an internal portion of the body when the body is in the second position, and a plurality of longitudinal ribs disposed on an exterior surface of the body. The longitudinal ribs can provide fluid flow channels between the valve and an external portion of the body when the body is in the second position.