Multi-Region Mandrel for Embolic Coil Manufacturing

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Solution Overview

Problem

Existing embolic coils face challenges in efficiently occluding complex vascular geometries and require time-consuming processes to impart secondary shapes, making it difficult to manufacture coils of various sizes and shapes.

Innovation Solution

An embolic coil design featuring windings in multiple planes with offset orientations, potentially using radiopaque materials like platinum or nitinol, and a mandrel with specific mounting elements to facilitate efficient winding and cutting into multiple coils, allowing for quick occlusion and reduced manufacturing time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If embolic coils are individually wound on different mandrels or on different regions of a mandrel to produce coils of various sizes and shapes, then manufacturing precision and adaptability are improved, but manufacturing time and device complexity increase

Engineering Contradiction:

Improvecoil size and shape varietyVSAvoidmanufacturing time

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

A single mandrel is designed with multiple winding regions that can produce coils of various sizes and shapes. The mandrel includes a first region for winding a first coil and a second region for winding a second coil, allowing one mandrel to serve multiple functions and produce different coil types simultaneously, thereby improving productivity while maintaining adaptability

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If embolic coils are individually wound on different mandrels to produce coils of various sizes and shapes, then coil customization is improved, but device complexity and manufacturing time increase

Engineering Contradiction:

Improvecoil size and shape varietyVSAvoidmandrel configuration

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple winding regions for different coil types are merged into a single mandrel structure. The mandrel integrates a first winding region for a first coil type and a second winding region for a second coil type, combining what would traditionally require separate mandrels into one unified device, thereby reducing device complexity while maintaining the ability to produce various coil configurations

Inventive Principle:

Principle #5Merging (Combining)

3Productivity

If multiple coils are wound on a common mandrel and cut into identical sections, then productivity is improved, but manufacturing precision may be compromised

Engineering Contradiction:

Improvecoil production efficiencyVSAvoidcoil dimensional accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The mandrel is divided into multiple distinct winding regions, each configured to wind a specific number of windings for different coil types. This segmentation allows each region to be independently controlled and optimized for its specific coil type, ensuring that even when multiple coils are produced simultaneously on one mandrel, each coil maintains its required dimensional accuracy and specifications

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS10307168B2Complex coil and manufacturing techniques

Publication Date: 2019.06.04 TERUMO KK

AI summary

An embolic coil which can be used for occlusive purposes in the vasculature is described. A mandrel for manufacturing a coiled structure, and method/process for manufacturing a coiled structure is described.