Intrasaccular Neck Bridging Device for Aneurysm Occlusion
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Solution Overview
Problem
Current occlusion devices for treating aneurysms, particularly large and giant aneurysms, require excessive coil usage, leading to prolonged procedure times and increased radiation exposure for both patients and medical staff, necessitating a more efficient method to achieve blood flow stagnation and clotting within the aneurysm.
Innovation Solution
An intrasaccular occlusion device featuring a braided mesh body with radiopaque strands and a pinch member, capable of expanding into a bowl shape with a recessed portion, which can be coupled to a delivery device and decoupled mechanically or electrolytically, and coated with anti-thrombogenic materials like glycosaminoglycan or phosphorylcholines to promote clotting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coil systems are used to treat large and giant aneurysms, then the aneurysm can be occluded, but excessive quantity of coils is required extending procedure time and increasing radiation exposure
Solution Approach 1:
The patent combines multiple functional elements into a single integrated occlusion device: a braided mesh body for structural support and flow stagnation, pinch members for securing the device, and radiopaque markers for imaging guidance. This consolidation replaces the need for multiple separate coils, achieving effective aneurysm occlusion while reducing procedure time and radiation exposure.
Solution Approach 2:
The occlusion device performs multiple functions simultaneously: the braided mesh body provides structural framework and promotes thrombus formation, the pinch members secure the device in place, and the radiopaque markers enable imaging visualization. This multi-functionality eliminates the need for separate coil systems, reducing both procedure time and the number of components required for effective aneurysm treatment.
2Reliability
If coil systems are used to treat large and giant aneurysms, then the aneurysm can be occluded, but excessive quantity of coils is required increasing radiation exposure to physician, supporting staff, and patient
Solution Approach 1:
The patent integrates radiopaque markers directly into the occlusion device structure, eliminating the need for separate coil systems that require extensive fluoroscopic guidance. The single device with built-in radiopaque markers reduces the time spent under radiation, thereby decreasing exposure to the patient, physician, and supporting staff while maintaining effective aneurysm occlusion.
3Productivity
If a single intrasaccular device is used to bridge the aneurysm neck, then blood flow stagnation and clotting can be promoted, but the device must be deliverable through the vasculature
Solution Approach 1:
The occlusion device features a dynamic structure that transitions from a compressed delivery configuration to an expanded deployed configuration. The braided mesh body and pinch members are designed to be compressible for navigation through the vasculature and delivery catheter, then expandable at the target site to achieve effective aneurysm occlusion and blood flow stagnation, thereby combining deliverability with occlusion efficiency.
Solution Approach 2:
The occlusion device is designed with a nested structure where the braided mesh body and pinch members can be compressed and nested within the delivery catheter during navigation. Upon deployment, the device expands from this nested configuration to achieve its functional form for effective aneurysm occlusion, enabling seamless transition from delivery to treatment.
Data Source
AI summary
An occlusion device includes a braided mesh body and at least one pinch member. The braided mesh body comprises plural strands each having a first end portion and a second end portion. The plural strands fold over to bring the second end portions of the plural strands adjacent to the first end portions of the plural strands forming a double-layer of the braided mesh body. In an example occlusion device, at least one of the plural strands is radiopaque, and the at least one pinch member is non-radiopaque.