Aneurysm Occlusion Device with Stabilizer and Barrier
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Solution Overview
Problem
Current surgical methods for closing anatomical openings, such as aneurysms, are highly invasive and pose risks due to complications like anesthesia, bleeding, and infection, with conventional embolic devices often failing to provide complete occlusion and leading to recanalization and debris migration.
Innovation Solution
An implantable aneurysm device with a closure structure and supplemental stabilizer for endovascular placement, featuring a distal-facing aspect to occlude the aneurysm and a proximal-facing aspect to arch over artery lumina, along with a barrier to further occlude the neck, designed for precise placement and stabilization to prevent embolic material escape and promote normal blood flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional surgical methods are used to close anatomical openings, then complete occlusion can be achieved, but the procedure becomes highly invasive with high risks of anesthesia, bleeding, and infection
Solution Approach 1:
The patent employs a delivery catheter as an intermediary device to transport the occlusive device to the target anatomical opening. The catheter serves as a mediator that enables minimally invasive access to deep vascular structures, allowing the occlusive device to be deployed remotely without requiring open surgical access. This resolves the contradiction by providing complete occlusion through a controlled, low-risk delivery mechanism.
Solution Approach 2:
The patent replaces traditional mechanical surgical clipping systems with a catheter-based delivery system. Instead of using large surgical instruments and manual clipping techniques that require opening the skull and directly accessing the aneurysm, the system uses a flexible catheter that can be navigated through blood vessels to deliver the occlusive device endovascularly, significantly reducing surgical invasiveness and associated risks.
2Object-affected harmful factors
If minimally invasive techniques are used to place occlusive devices, then surgical risks are reduced, but complete occlusion is difficult to achieve and recanalization occurs
Solution Approach 1:
The occlusive device incorporates expandable or deformable structures that can dynamically change configuration during deployment. The device transitions from a compressed delivery state within the catheter to an expanded functional state at the target site, allowing it to adapt to the anatomical opening and achieve complete occlusion. This dynamic transformation ensures reliable occlusion while maintaining minimally invasive delivery.
Solution Approach 2:
The patent utilizes changes in physical parameters such as radial force, structural configuration, and material properties to ensure complete occlusion. The occlusive device is designed to exert controlled radial forces against the vessel wall, change its shape from a delivery configuration to a deployed configuration, and adjust its compliance to match the surrounding tissue, thereby achieving reliable occlusion without requiring highly invasive surgical techniques.
3Reliability
If embolic agents are injected to form space-filling mass, then occlusion is achieved, but the material allows vessel recanalization due to absorption into blood
Solution Approach 1:
The occlusive device employs composite material construction combining different materials with complementary properties. The device may incorporate biocompatible polymers, shape memory alloys, or other material combinations that provide both immediate occlusion effectiveness and long-term durability. This composite approach prevents recanalization by creating a structurally stable occlusion that resists degradation and absorption into the bloodstream.
Solution Approach 2:
The device exhibits local quality variations with different sections having different material properties or structural characteristics. The portion in contact with the vessel wall may have different compliance, porosity, or bonding characteristics compared to the central occluding portion. This localized differentiation ensures both immediate occlusion effectiveness and long-term durability by optimizing each region for its specific functional requirements.
4Reliability
If multiple coils are implanted serially in an aneurysm, then occlusion is improved, but the procedure complexity and time increase
Solution Approach 1:
The patent merges multiple occlusive functions into a single integrated device structure. Rather than requiring sequential implantation of multiple separate coils, the device combines the occlusion capabilities of multiple elements into one unified construct that can be deployed simultaneously through a single catheter. This merging approach maintains high occlusion quality while significantly reducing procedure complexity and delivery time.
Solution Approach 2:
The occlusive device is segmented into multiple functional elements or zones that work together to achieve complete occlusion. These segments may be arranged in a specific configuration within the device, allowing them to expand or deploy in a coordinated manner to fill the aneurysm cavity effectively. This segmentation provides the occlusion quality of multiple coils while maintaining a single deployable unit.
5Adaptability or versatility
If the occlusive device is made to conform to various aneurysm shapes and sizes, then adaptability is improved, but device design complexity increases
Solution Approach 1:
The occlusive device utilizes flexible shell structures or thin film components that can elastically deform to conform to various aneurysm geometries. These flexible elements are designed with appropriate compliance and memory properties, allowing them to adapt to different shapes and sizes while maintaining their structural integrity. This approach provides high adaptability without requiring complex adjustable mechanisms or multiple device variants.
Solution Approach 2:
The device incorporates dynamic structural elements that can change configuration during deployment to match the target aneurysm geometry. The structure transitions from a compact delivery form to an expanded conforming form, with elements that can flex, rotate, or reposition themselves to accommodate variations in aneurysm shape and size. This dynamic adaptability achieves versatility while maintaining relatively simple device design.
Data Source
AI summary
The present technology is directed generally to devices, systems, and methods for enclosing anatomical openings. In one example, an aneurysm device is endovascularly deliverable to a site proximate to an arterial aneurysm. The aneurysm device can include a closure structure having a distal-facing aspect configured to at least partially occlude the aneurysm and a proximal-facing aspect configured to arch over lumina of an artery. The closure structure can include a plurality of struts forming support arms and anchoring arms. The device further includes a supplemental stabilizer connected to the closure structure and configured to reside in the artery and press outward against a luminal wall thereof. A barrier can span at least a portion of the distal-facing aspect of the closure structure and be configured to further occlude a neck of the aneurysm. The closure structure can be configured to restrict and/or divert flow to or from the aneurysm.