Self-Expanding Aneurysm Embolization Device with Segmented Neck Cover

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Solution Overview

Problem

Current treatments for aneurysms, such as surgical clipping, coil embolization, and stenting, face challenges in effectively preventing rupture and ensuring long-term occlusion, particularly in intracranial aneurysms.

Innovation Solution

An embolization device with multiple self-expandable portions, including a neck cover, an atraumatic tip, and a volume-filling member, is designed to be deployed within an aneurysm. The device is configured to engage the aneurysm wall, prevent migration, and promote thrombosis for healing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional coil embolization is used to treat aneurysms, then the aneurysm can be occluded, but the device may migrate or advance out of the aneurysm via the aneurysm neck

Engineering Contradiction:

Improveaneurysm occlusion effectivenessVSAvoiddevice position stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The device is divided into multiple functional portions: a neck cover portion that prevents migration, an atraumatic tip portion for safe deployment, and a volume-filling body portion for occlusion. This segmentation allows each portion to perform its specific function independently, resolving the contradiction between effective occlusion and positional stability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The neck cover portion is deployed first to establish a stable base and prevent device migration before the main volume-filling portion is deployed. This preliminary action ensures that the device remains positioned within the aneurysm during the occlusion process, addressing both reliability and stability requirements.

Inventive Principle:

Principle #10Preliminary action

2Stability of the object's composition

If the aneurysm wall is engaged to prevent migration, then device stability improves, but trauma to the aneurysm wall may occur

Engineering Contradiction:

Improvedevice position stabilityVSAvoidaneurysm wall trauma

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The device incorporates an atraumatic tip portion with specific local properties (rounded shape, flexible material) that differ from the rest of the device. This local quality modification allows the tip to safely engage with the aneurysm wall without causing trauma, while other portions maintain their structural integrity for stable positioning and effective occlusion.

Inventive Principle:

Principle #3Local quality

3Adaptability or versatility

If multiple functional portions are integrated into a single device, then device versatility improves, but device complexity increases

Engineering Contradiction:

Improvedevice functionalityVSAvoiddevice structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple functional portions (neck cover, atraumatic tip, volume-filling body) that would traditionally require separate devices are merged into a single integrated embolization device. This merging provides versatility for treating various aneurysm types while the unified structure simplifies deployment compared to coordinating multiple separate devices.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single device is designed to perform multiple functions: preventing migration through the neck cover, ensuring safe deployment through the atraumatic tip, and achieving occlusion through the volume-filling body. This multi-functionality eliminates the need for multiple specialized devices, reducing overall procedural complexity despite the increased versatility of the single device.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 device effectively occludes the aneurysm, reduces the risk of rupture, and promotes a healing thrombotic effect, thereby addressing the limitations of existing treatments.

Implementation Method 1

The device can be compressed to a delivery configuration and is configured to self-expand from the delivery configuration toward the memory shape-set configuration

Methodology Applied

Scientific EffectElastic expansion: Elasticity

Implementation Method 2

Ball-type embolic devices for aneurysm treatment and/or other types of embolization operate through blood flow disruption and subsequent thrombus formation

Methodology Applied

Scientific EffectThrombosis: Coagulation

Data Source

PatentUS20250176967A1Aneurysm treatment device and associated systems and methods of use

Publication Date: 2025.06.05 COVIDIEN LP

AI summary

An aneurysm treatment device includes a tip portion, a body portion, and a base portion. The device is configured to radially self-expand within an aneurysm, with the tip portion engaging a dome portion of the aneurysm, the body portion filling most of the aneurysm volume, and the base portion extending across the aneurysm neck to prevent migration of the device.