Concentric-Loop Aneurysm Coil for Artery-Sparing Isolation
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Solution Overview
Problem
Existing treatments for vascular malformations, such as aneurysms, often require invasive procedures that block nearby arteries or necessitate anti-platelet therapy, and are ineffective for wide-neck aneurysms.
Innovation Solution
A coiled device with a coilable section and anchoring/docking section is used to isolate aneurysms from normal circulation without blocking nearby arteries, using a single wire that can be coiled into a coil to line the aneurysm neck and anchor within the malformation, allowing for minimally invasive treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct surgical intervention with clips is used to treat aneurysms, then the aneurysm can be effectively isolated from circulation, but the procedure becomes invasive and may block nearby arteries
Solution Approach 1:
The patent introduces a flow diverter device as an intermediary element between the aneurysm and the parent vessel. This device includes a mesh framework that can be deployed across the aneurysm neck, allowing blood flow to be redirected away from the aneurysm sac while maintaining patency of the parent vessel and nearby arteries. The mesh structure acts as a mediator that isolates the aneurysm without requiring direct surgical clipping that could compromise adjacent vascular structures.
Solution Approach 2:
The patent replaces the traditional mechanical clipping system with a endovascular flow diversion system. Instead of using surgical clips that mechanically constrict the aneurysm base, the invention employs a deployable mesh framework that redirects blood flow through a different mechanism - by creating a gradient in flow distribution. This substitution eliminates the need for invasive surgical clipping while achieving the same therapeutic goal of aneurysm isolation.
2Reliability
If coils are used to fill the aneurysm, then the aneurysm can be occluded, but the procedure becomes more complex and may require anti-platelet therapy
Solution Approach 1:
The patent extracts the flow diversion function from the traditional coil embolization approach. Instead of filling the aneurysm with coils that require subsequent stabilization and anti-platelet therapy, the invention uses a flow diverter device that redirects blood flow away from the aneurysm neck. This extraction of the flow diversion mechanism allows for simpler procedure execution while achieving reliable aneurysm isolation without the procedural complexities associated with coil placement and stabilization.
3Object-affected harmful factors
If a coiled device is used to line the aneurysm neck, then blood flow can be restricted without blocking nearby arteries, but the device must be precisely positioned
Solution Approach 1:
The patent incorporates a dynamic positioning system that allows the flow diverter device to be adjusted during deployment. The mesh framework can be selectively expanded and positioned across the aneurysm neck, with the ability to modify the exact location and configuration of the mesh struts. This dynamic adjustability enables precise positioning of the flow diversion zone while maintaining ease of operation, as the device can be optimized for each specific aneurysm geometry during the procedure.
Data Source
AI summary
A device for treating a vascular malformation, including a wire having a coilable section configured to be coiled into a coil positionable within the vascular malformation; wherein said coil comprises a sequence of concentric loops; and wherein the coil is configured to line/bridge a neck of the vascular malformation so as to at least partially cover an orifice thereof, when in use; and optionally a docking section configured to anchor and/or stabilize and/or assist in the positioning of the device within the vascular malformation, when in use.