Expandable Vessel Support for Stable Percutaneous Fluid Collection
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Solution Overview
Problem
Existing percutaneous devices and methods for fluid collection from organs face challenges such as low flow rates, vessel wall damage, occlusion, and catheter movement, leading to complications like venous pooling and cavitation, particularly in flaccid vessels like the coronary sinus.
Innovation Solution
A percutaneously deliverable expandable support device that maintains vessel patency by expanding within the vessel to prevent collapse, keeping the catheter tip central and anchored, thereby ensuring stable fluid flow and reducing the risk of occlusion and movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a collection catheter is positioned in a vein to collect fluid from an organ, then fluid can be collected and returned to the organ or discarded, but low flow rates occur leading to venous pooling and possible tissue damage
Solution Approach 1:
The patent applies local quality by providing vessel support specifically at the collection site (vein) rather than throughout the entire vascular system. The expandable support device is deployed locally in the vein to maintain patency and prevent collapse, addressing the local problem of low flow rates and venous pooling without affecting other parts of the circulatory system.
Solution Approach 2:
The expandable support device acts as an intermediary element between the collection catheter and the vein wall. It provides mechanical support to the vein, preventing collapse and maintaining adequate flow rates, thereby mediating between the catheter's fluid collection function and the vein's structural integrity.
2Productivity
If fluid is collected at high flow rates from an organ via a catheter, then venous pooling is prevented, but vessel wall damage and catheter occlusion may occur
Solution Approach 1:
The patent applies beforehand cushioning by deploying the expandable support device in advance to protect the vein wall from potential damage. The support device acts as a cushioning structure that prevents direct contact between the collection catheter and the vein wall, thereby preventing vessel wall damage and catheter occlusion before they can occur during high flow rate collection.
Solution Approach 2:
The expandable support device serves as an intermediary barrier between the collection catheter and the vein wall. It maintains adequate spacing and prevents direct interaction that could cause damage or occlusion, allowing high flow rates to be maintained safely.
3Ease of operation
If a catheter is deployed in a vessel to collect fluid, then fluid collection is enabled, but the catheter may move from its deployed position
Solution Approach 1:
The patent applies the anti-weight principle by using the expandable support device to counteract the forces that cause catheter movement. The support device provides structural stability to the vein, acting as a counterbalance to the dynamic forces during fluid collection, thereby maintaining catheter position stability.
Solution Approach 2:
The expandable support device acts as an intermediary structure that stabilizes the interaction between the collection catheter and the vein. It provides a stable framework that prevents catheter migration while allowing fluid collection to proceed.
4Object-affected harmful factors
If percutaneous techniques are used to access internal sites, then minimally invasive procedures are performed with reduced patient risk, but difficulties are encountered in maintaining sufficient flow rates through collection catheters
Solution Approach 1:
The patent applies local quality by addressing the flow rate problem locally at the collection site rather than requiring systemic changes. The expandable support device is deployed specifically in the collection vein to maintain patency and ensure adequate flow rates, preserving the minimally invasive nature of the procedure while solving the local flow limitation.
Solution Approach 2:
The expandable support device serves as an intermediary solution that enables adequate flow rates through the collection catheter without compromising the minimally invasive approach. It mediates between the percutaneous access limitations and the requirement for sufficient fluid collection flow.
Data Source
AI summary
The present invention provides devices and methods for use in the perfusion of organs and anatomical regions. In one aspect the present method provides a percutaneously deliverable device for supporting a vessel in a human or animal subject including means for supporting the vessel during delivery of a fluid thereto or collection of a fluid therefrom. In another aspect the invention provides a method for delivery or collection of a fluid to or from an organ or anatomical region in a human or animal subject, the method including the step of supporting a vessel associated with the organ or anatomical region. The devices and methods may be used to deliver, remove or recirculate a therapeutic agent to an organ or anatomical region.