Vascular Occlusion Coil Structure for Fast Self-Anchoring Deployment
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Solution Overview
Problem
Existing vascular occlusion coils are expensive and less adaptable for varying target implantation sites, requiring significant time and skill for deployment and anchoring in blood vessels.
Innovation Solution
A vascular occlusion coil with elastically relaxed arced segments that can form a three-dimensional structure within a container, allowing for self-anchoring and resistance to compressive forces, facilitated by a core member and a flexible container that expands and compresses to enhance anchoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional vascular occlusion coils are used, then occlusion can be achieved, but deployment time and skill requirements increase significantly
Solution Approach 1:
The coil is pre-formed into a three-dimensional configuration within a container before delivery, eliminating the need for manual manipulation and packing during the procedure. The coil maintains its pre-formed shape through elastic memory, allowing for rapid deployment without requiring significant operator skill or time for manual configuration.
Solution Approach 2:
The coil possesses self-anchoring capabilities through its elastically relaxed arced segments that automatically conform to and anchor against the vessel wall upon deployment. The container itself facilitates the anchoring process through its expansion and compression mechanics, reducing the need for additional anchoring devices or complex manual manipulation.
2Reliability
If traditional vascular occlusion coils are used, then occlusion can be achieved, but adaptability to varying implantation sites is reduced
Solution Approach 1:
The coil is designed with elastically relaxed arced segments that can dynamically adjust and conform to different vessel geometries and implantation site characteristics. The container expands and compresses to facilitate the coil's adaptation to varying target site shapes and dimensions, providing versatility across different anatomical locations.
Solution Approach 2:
The physical state of the coil transitions from a constrained linear configuration during delivery to an expanded three-dimensional arced configuration at the implantation site. This parameter change allows the coil to adapt to different vessel sizes and shapes while maintaining occlusion effectiveness across varying implantation conditions.
3Strength
If more metal is used in the coil structure, then strength and anchoring improve, but overall volume and surface area in the patient's body increase
Solution Approach 1:
The coil transitions from a two-dimensional linear configuration to a three-dimensional arced structure upon deployment. This dimensional change allows the same amount of metal to occupy a larger volume and provide greater surface area for anchoring and occlusion without increasing the amount of metal used, thereby maintaining strength while minimizing implanted material volume.
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 solution reduces deployment time and skill requirements, adapts to varying implantation sites, and provides effective occlusion by forming a resilient structure that anchors securely in blood vessels.
Implementation Method 1
a vascular occlusion coil with elastically relaxed arced segments that can form a three-dimensional structure within a container, allowing for self-anchoring and resistance to compressive forces
Data Source
AI summary
Vascular occluders may comprise containers defining a container space. The container space may receive a vascular occlusion coil. The vascular occlusion coil may have an elastically relaxed configuration comprising a series of arced segments arranged in two or more different orientations. The vascular occlusion coil may comprise a cylindrical spiral body with a core member provided therein. The vascular occlusion coil may transition from a secondary structure to a tertiary structure as it is dispensed into the container space.