Multi-Branch Endoprosthesis With Single Side Portal Access

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Solution Overview

Problem

Existing implantable endoluminal devices face challenges in managing guidewire entanglement, cannulation of branch vessels, device manufacturing complexity, positioning difficulties, and excessive profile when accessing multiple side-branch vessels.

Innovation Solution

An implantable endoluminal device with a main endoprosthesis featuring a single side portal and side portal adaptor with grooves allows deployment of multiple side-branch endoprostheses through a single channel, facilitating guidewire manipulation and reducing entanglement, while enabling easy cannulation and simplified deployment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple side portals are provided in the main endoprosthesis to access multiple side-branch vessels, then access to branch vessels is improved, but device complexity and guidewire entanglement increase

Engineering Contradiction:

Improveaccess to side-branch vesselsVSAvoidguidewire management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multiple side portal functions into a single side portal structure. The main endoprosthesis includes one side portal that accommodates multiple side-branch endoprostheses through a shared side channel, eliminating the need for multiple separate side portals and reducing guidewire entanglement while maintaining access to multiple branch vessels.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single side portal is designed with universal functionality to accommodate multiple different side-branch endoprostheses. The side channel and adaptor structure can receive and support multiple side-branch devices simultaneously, making the single portal as effective as multiple portals would be for accessing different branch vessels.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple side portals are used to access multiple side-branch vessels, then branch vessel access is improved, but cannulation difficulty increases

Engineering Contradiction:

Improvebranch vessel accessVSAvoidcannulation ease

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent combines multiple cannulation targets into a single side portal entry point. Operators need to cannulate only one side portal rather than multiple separate portals, significantly simplifying the cannulation procedure while still enabling access to multiple side-branch vessels through the shared side channel.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If multiple separate side portals are provided, then access to multiple branch vessels is achieved, but manufacturing complexity increases

Engineering Contradiction:

Improvemulti-branch access capabilityVSAvoiddevice manufacturing complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges multiple side portal structures into a single integrated side portal with a shared side channel. This consolidation reduces the number of separate components that need to be manufactured and assembled, simplifying the manufacturing process while maintaining the capability to access multiple side-branch vessels.

Inventive Principle:

Principle #5Merging (Combining)

4Adaptability or versatility

If multiple side-branch endoprostheses are deployed through separate portals, then branch vessel coverage is improved, but device profile increases

Engineering Contradiction:

Improveside-branch vessel coverageVSAvoiddevice profile

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The patent employs a nested configuration where multiple side-branch endoprostheses are deployed through a single side portal and share a common side channel. This nesting approach allows multiple devices to occupy a more compact spatial arrangement, reducing the overall device profile compared to having separate portals for each side-branch device.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentEP4164547B1Multi-branch intraluminal devices and methods of making same

Publication Date: 2026.03.18 WL GORE & ASSOC INC

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AI summary

An implantable device comprising a main endoprosthesis configured for implantation in a vessel, the main endoprosthesis including at least one side portal, a first side-branch endoprosthesis configured to be deployed within the main endoprosthesis and direct flow through a first side-branch vessel via the at least one side portal, a second side-branch endoprosthesis configured to be deployed within the main endoprosthesis and direct flow through a second branch vessel via the at least one side portal, and wherein when not containing a side-branch endoprosthesis the at least one side portal comprises a side channel without fluid separation.