Embolization Basket Structure for Full Embolic Filling

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Solution Overview

Problem

Existing embolization devices face challenges in filling the entirety of the basket with embolic objects and preventing them from protruding or damaging the blood vessel wall, especially when the device is placed at the neck of a vascular lesion.

Innovation Solution

The embolization device features a basket with a distal end side bundling portion located distal to the proximal end of the housing portion, a recessed proximal end side bundling portion, and a basket pusher to facilitate even distribution of embolic objects within the basket, reducing protrusion and vessel damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the basket is filled with embolic objects to promote embolus formation, then the embolization efficacy is improved, but the bundling portion may protrude to the parent artery side causing embolus formation or vessel damage

Engineering Contradiction:

Improveembolization efficacyVSAvoidvessel damage risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The distal end of the proximal end side bundling portion is positioned on the distal side with respect to the proximal end of the housing portion before embolic objects are inserted. This preliminary positioning creates a buffer zone that prevents the bundling portion from protruding when the basket is filled, thereby allowing complete filling without vessel damage risk

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The bundling portion is designed with specific local characteristics - the distal end extends into the housing portion to create a recessed configuration. This local structural modification ensures that the bundling portion remains contained within the basket even when filled with embolic objects, preventing protrusion to the parent artery

Inventive Principle:

Principle #3Local quality

2Reliability

If the proximal portion of the device is placed at the neck portion of a bump, then the device can prevent embolic objects from falling out, but it becomes difficult to fill the entirety of the inside of the device with embolic objects

Engineering Contradiction:

Improveembolic object containmentVSAvoidfilling difficulty

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The proximal end side bundling portion is preliminarily positioned to extend into the housing portion, creating a recessed configuration before embolic objects are inserted. This preliminary arrangement facilitates easier filling by guiding embolic objects into the proximal portion of the basket, ensuring complete filling while maintaining containment at the neck

Inventive Principle:

Principle #10Preliminary action

3Object-affected harmful factors

If the bundling portion is positioned to prevent protrusion, then vessel damage is prevented, but the device structure becomes more complex

Engineering Contradiction:

Improvevessel damage preventionVSAvoidbasket structure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The bundling portion is positioned in advance during device manufacturing, with the distal end located on the distal side of the proximal end of the housing portion. This preliminary positioning is achieved through the wire configuration and bundling method, providing vessel protection without requiring additional components or complex mechanisms

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The proximal end side bundling portion is merged with the housing portion structure, where the bundling portion extends into and becomes integrated with the housing portion. This merging creates a recessed configuration that prevents protrusion while maintaining a relatively simple overall device structure

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250366858A1Embolization device

Publication Date: 2025.12.04 KANEKA CORP

AI summary

An embolization device (1) for a bump in a lumen, comprising a basket (10) for housing an embolic object, wherein the basket (10) has a plurality of wires (20), the basket (10) has a distal end side bundling portion (30) at which the plurality of wires (20) are bundled and fixed on a distal side of the basket (10), a proximal end side bundling portion (40) at which the plurality of wires (20) are bundled and fixed on a proximal side of the basket (10), and a housing portion (50) which is a portion between the distal end side bundling portion (30) and the proximal end side bundling portion (40) at the plurality of wires (20), and a distal end (40d) of the proximal end side bundling portion (40) is located on the distal side with respect to a proximal end (50p) of the housing portion (50).