Bifurcated Endoprosthesis Contralateral Gate Design

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Solution Overview

Problem

Current endoprosthesis systems face challenges in treating patients with short total treatment lengths, particularly in bifurcated lumens, due to the need for contralateral limb bridging endoprostheses.

Innovation Solution

The development of bifurcated endoprostheses that can be directly deployed into the contralateral or ipsilateral gate of a bifurcated main body endoprosthesis, eliminating the need for contralateral limb bridging endoprostheses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If modular endoprostheses with contralateral limb bridging are used to treat bifurcated lumens, then the treatment can accommodate standard anatomy, but the procedure complexity increases and treatment is not feasible for patients with short total treatment lengths

Engineering Contradiction:

Improveadaptability to different anatomy lengthsVSAvoidprocedural complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The endoprosthesis is divided into modular components including a main body, ipsilateral leg, and contralateral gate, allowing flexible assembly adapted to different anatomical configurations and treatment lengths

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The contralateral gate structure serves multiple functions: it receives both the contralateral limb bridging endoprosthesis in standard cases and directly accommodates the ipsilateral leg in short treatment length cases, making the system universally applicable across different anatomical scenarios

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If contralateral limb bridging endoprostheses are employed, then standard bifurcated anatomy can be treated, but the total treatment length requirement cannot be met in patients with short anatomy

Engineering Contradiction:

Improvetreatment effectivenessVSAvoidtotal treatment length

Core Design Contradiction:

ReliabilityVSLength of moving object

Solution Approach 1:

The system allows dynamic adaptation of the treatment configuration based on anatomical measurements, enabling transition between contralateral limb bridging mode and direct ipsilateral leg deployment mode to match the patient's specific treatment length requirements

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If additional modular components are added to address complex multi-branch anatomy, then more complex branched anatomy can be treated, but the device complexity and procedure complexity increase

Engineering Contradiction:

Improveability to treat complex branched anatomyVSAvoidnumber of modular components

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The ipsilateral leg is designed to be received within the contralateral gate structure, creating a nested configuration that consolidates multiple functional elements into a compact integrated assembly, reducing the number of separate modular components required

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS20250143867A1Bifurcated endoprosthesis systems and methods

Publication Date: 2025.05.08 WL GORE & ASSOC INC

AI summary

Various concepts relate to Iliac branch endoprostheses extending for a length between a proximal end and a distal end, the iliac bifurcated endoprosthesis bifurcated from a primary flow channel into two flow channels. Various concepts relate to methods of deploying an endoprosthesis system to treat an aortic aneurysm including deploying an iliac bifurcated endoprosthesis into an ipsilateral leg of a bifurcated main body endoprosthesis, or a contralateral gate of a bifurcated main body endoprosthesis.