Coiled Aneurysm Device for Neck Bridging Without Vessel Blockage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing treatments for vascular malformations, such as aneurysms, often require invasive procedures that block nearby arteries or necessitate anticoagulant therapy, posing risks and complications, especially in ruptured aneurysms.
Innovation Solution
A device with a coiled section and anchoring/docking section, configured to be coiled within the aneurysm, lines the neck of the malformation without blocking adjacent arteries, using a single wire that can be delivered minimally invasively, and optionally includes a docking section for detachable coils, reducing the risk of vessel blockage and the need for anticoagulants.
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 carries high surgical risk
Solution Approach 1:
The patent replaces the mechanical clip system with a coil-based embolization system. The coil device is delivered through a catheter via endovascular access, eliminating the need for open surgical clipping. The coil is deployed within the aneurysm sac to induce thrombus formation and isolate the aneurysm from circulation, achieving the same therapeutic effect with minimal invasive procedure.
2Reliability
If coils are used to fill the aneurysm, then the aneurysm can be occluded, but nearby arteries may be blocked off
Solution Approach 1:
The patent employs a coil device with specific local geometry designed to conform to the aneurysm sac shape. The coil is delivered through a microcatheter that can be precisely positioned within the aneurysm, allowing the coil to be deployed only in the aneurysm sac rather than filling the parent vessel. This localized deployment ensures complete aneurysm occlusion while preserving blood flow through adjacent arteries.
3Reliability
If coils are used to treat aneurysms, then the aneurysm can be treated, but anticoagulant therapy is required which poses additional risks
Solution Approach 1:
The patent utilizes the body's own clotting mechanism to achieve aneurysm occlusion. The coil device serves as a scaffold that promotes thrombus formation within the aneurysm sac, allowing the aneurysm to seal itself off from circulation. This self-sealing mechanism eliminates the need for external anticoagulant therapy, as the coil-induced thrombus formation occurs naturally without requiring pharmacological intervention.
4Object-affected harmful factors
If a coiled section is used to restrict blood flow, then the aneurysm can be isolated without blocking nearby arteries, but the device complexity increases
Solution Approach 1:
The patent divides the device into distinct functional segments: a delivery catheter, a coilable section, and an anchoring section. The coilable section can be compressed into a compact configuration for delivery through the catheter and then expands into the aneurysm sac upon deployment. The anchoring section remains collapsed during delivery and then anchors the coil in place within the aneurysm. This segmentation allows the device to achieve complex functionality while maintaining a simple delivery profile.
Data Source
AI summary
A non-occlusive device is provided that includes a coilable section and a docking section. When deployed from a microcatheter within a wide-neck vascular aneurysm, the coilable section is configured to become coiled into a coil defining a sequence of concentric loops, and to bridge a neck of the aneurysm so as to at least partially cover an orifice of the aneurysm, when in use. The docking section is configured to be deployed from the microcatheter within the aneurysm. The docking section extends distally from an outermost one of the concentric loops of the coil, and is shaped so as to define one loop or a plurality of concentric loops having an outer diameter less than an outer diameter of the concentric loops of the coil. The docking section is configured to anchor, stabilize, and/or assist with positioning of the device within the aneurysm. Other embodiments are also described.