Embolization Basket Structure for Coil Containment in Aneurysms
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing embolization devices face challenges in efficiently filling the inside of a blood vessel bump with embolic objects, such as coils, without damaging the vessel wall, and are limited in accommodating varying sizes and shapes of aneurysms due to issues with embolic object placement and device expansion.
Innovation Solution
An embolization device featuring a basket with a distal end bundling portion located proximally to the housing portion, allowing for expandable and deformable design to accommodate varying sizes and shapes, and a protrusion that blocks embolic object movement, reducing the risk of protrusion and vessel damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the basket is expanded to fill the bump completely, then the embolus formation efficiency is improved, but the risk of protrusion damaging the blood vessel wall increases
Solution Approach 1:
The distal end side bundling portion is positioned inside the basket before deployment, creating a preliminary barrier that prevents embolic objects from protruding outward during the embolization process, thus preventing vessel wall damage before it can occur
Solution Approach 2:
The distal end side bundling portion acts as an intermediary structure between the embolic objects and the blood vessel wall, absorbing the mechanical stress and preventing direct contact between the protruding embolic objects and the vessel wall
2Adaptability or versatility
If a single type of device is used to accommodate various aneurysm sizes and shapes, then the device versatility is improved, but the precision of fitting to specific bump geometries deteriorates
Solution Approach 1:
The basket is designed with dynamic expandability, allowing it to change its configuration from a compressed delivery state to an expanded deployed state, enabling a single device type to adapt to various aneurysm sizes and shapes while maintaining precise fitting through controlled expansion
Solution Approach 2:
The device utilizes parameter changes in the basket's physical state (compressed vs. expanded) to achieve versatility across different aneurysm geometries, where the same device can fit various sizes by changing its dimensional parameters through expansion
3Reliability
If the distal end side bundling portion is positioned inside the basket, then the embolic object containment is improved, but the device structure complexity increases
Solution Approach 1:
The distal end side bundling portion is merged with the basket structure itself, combining the containment function with the existing radial support framework, thereby improving embolic object containment without adding separate complex components
Data Source
AI summary
An embolization device for a bump in a lumen, comprising a basket for housing an embolic object, the basket formed of wires, wherein the basket has a distal end bundling portion to bundle and fix wires on a distal side of the basket, a proximal end bundling portion to bundle and fix wires on a proximal side of the basket, and a housing portion which is a portion between the distal and proximal end bundling portions, a proximal end of the distal end bundling portion is located on the proximal side with respect to a distal end of the housing portion, and a distance between a distal end of the distal end bundling portion and the distal end of the housing portion in a longitudinal direction of the basket is 1/10 or more of a length from the distal end to a proximal end of the housing portion.