Aortic Arch Embolic Diversion Device With Convex Struts
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Solution Overview
Problem
Current stroke prevention methods are inadequate in addressing the high incidence and mortality rates associated with ischemic strokes, particularly in patients with atrial fibrillation and heart failure, due to the risk of embolic events and thromboembolic complications.
Innovation Solution
A device comprising an extension portion and a flange portion with parallel convex struts positioned across an opening, designed to fit within an artery extending from the aortic arch, capable of diverting emboli and preventing their entry into the artery, thereby reducing the risk of stroke. The device includes a stent with radiopaque markers for alignment and is made from materials like stainless steel or nitinol, with a cylindrical shape and dimensions suitable for the aortic arch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current stroke prevention methods are used, then treatment availability is maintained, but effectiveness is insufficient due to high incidence and mortality rates of ischemic strokes
Solution Approach 1:
The device segments the aortic arch into different zones using a flange portion with parallel convex struts that create distinct flow paths. This segmentation redirects embolic material away from critical cerebral arteries while allowing normal blood flow to continue, thereby improving stroke prevention effectiveness without increasing mortality
Solution Approach 2:
The parallel convex struts act as an intermediary structure between the aortic arch and the cerebral arteries. This intermediary element intercepts and redirects embolic material before it can enter the cerebral circulation, providing a mechanical barrier that enhances prevention effectiveness while maintaining overall blood flow productivity
2Object-affected harmful factors
If embolic material is allowed to flow freely, then blood flow continuity is maintained, but stroke risk increases due to embolic events
Solution Approach 1:
The device applies local quality modification by creating a specific flow redirection zone at the aortic arch using parallel convex struts. This local structural modification affects only the embolic material path while leaving the overall blood flow pattern stable and continuous, reducing embolic event risk without disrupting blood flow stability
Solution Approach 2:
The parallel convex struts perform partial action by selectively intercepting only the harmful embolic material while allowing normal blood flow to pass through. This partial intervention maintains blood flow continuity and stability while effectively removing the harmful embolic component from the circulation
Data Source
AI summary
The disclosure of the present application provides devices, systems, and methods for the prevention of stroke. In at least one embodiment of a device of the present application, the device comprises an extension portion sized and shaped to fit within an artery extending from an aortic arch, and a flange portion sized and shaped to prevent the device from advancing into the artery extending from the aortic arch in which the device may be positioned. In at least one embodiment of a system for preventing stroke of the present application, the system comprises a hypotube, a folder coupled to a distal end of the hypotube, a sleeve positioned circumferentially around the hypotube proximal to the folder, and a stent, wherein a first part of the stent may be positioned within the folder, and wherein a second part of the stent may be positioned within the sleeve.