3D Intersecting Embolic Coil Structure for Stable Aneurysm Packing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing embolic coil systems struggle to achieve extended lengths with structural stability and tight packing, as conventional shape-setting tools either limit coil length or fail to ensure consistent 3D reconfiguration within aneurysms.
Innovation Solution
A coil system with a unique winding pattern featuring intersecting, concentrically deployed loops, formed using a shape-setting device with a 3D body and winding members, allowing for extended lengths and improved structural stability through concentric wrapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional shape-setting tools are used to create 3D microcoils, then the microcoil can achieve a three-dimensional configuration, but the coil length is limited by the number of sections in the shape-setting tool
Solution Approach 1:
The patent transitions from conventional linear/section-based coil winding to a true three-dimensional winding pattern. The shape-setting tool creates a 3D microcoil with loops that intersect and overlay in multiple spatial dimensions, allowing extended coil lengths without proportionally increasing the number of tool sections. This dimensional transformation enables longer coils while maintaining manufacturing simplicity.
2Length of moving object
If more sections of the shape-setting tool are added to create extended coil length, then the coil length increases, but the manufacturing complexity and cost increase
Solution Approach 1:
By implementing true three-dimensional winding with intersecting loops, the patent achieves extended coil lengths through spatial configuration rather than adding sequential sections. This approach maintains manufacturing simplicity as the shape-setting tool structure remains relatively compact while producing longer coils through the 3D loop intersection pattern.
3Reliability
If conventional microcoils are deployed in aneurysms, then treatment can be provided, but the coils may not reconfigure consistently into the intended 3D shape
Solution Approach 1:
The shape-setting tool pre-forms the microcoil wire into a specific three-dimensional configuration with intersecting loops during the manufacturing process. This preliminary 3D shaping ensures that when the microcoil is deployed in the aneurysm, it maintains consistent and reliable reconfiguration into the intended shape, improving both manufacturing precision and deployment reliability.
4Length of moving object
If traditional coil systems are used, then aneurysm treatment can be achieved, but extended coil lengths cannot be obtained with the same coil sizes
Solution Approach 1:
The patent enables extended coil lengths within the same coil size category by implementing three-dimensional winding with intersecting loops. This allows the coil to achieve greater length through spatial arrangement rather than increasing the basic coil diameter or cross-section, thereby maintaining size flexibility while extending length.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The coil system provides enhanced aneurysm packing with reduced coil usage, improved structural stability, and better apposition to the aneurysm wall, minimizing migration risk and reducing procedural time and cost.
Implementation Method 1
the embolic device is detached from the delivery system by applying thermal or electrolytic power
Implementation Method 2
the embolic device is detached from the delivery system by applying thermal or electrolytic power
Data Source
AI summary
An embolic device includes a microcoil having a portion comprising one or more sets of loops. Loops of each of the one or more sets intersect one with another in succession in a cycle, collectively forming a three-dimensional shape. A shape-setting device includes a three-dimensional (3D) body having a curved surface and a plurality of winding members extending from the curved surface of the 3D body and arranged in a plurality of groups. Winding members of each of the plurality of groups are configured to allow a microcoil to wrap around to form a loop, and adjacent groups of winding members share a winding member to allow loops formed by the adjacent groups to intersect one with another. A method of making an embolic device is also provided.