Adjustable Multi-Component Endograft for Aneurysm Repair
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Solution Overview
Problem
Current endografts face challenges in maintaining blood flow to peripheral vessels during treatment of aneurysms, particularly when aneurysms affect main vessels, leading to potential blockage and life-threatening symptoms due to inadequate accommodation of varying anatomical locations and patient anatomies.
Innovation Solution
A multi-component endograft system with independently adjustable second and third endografts within the first endograft, allowing vertical and rotational adjustments to accommodate different aneurysm locations and patient anatomies, ensuring fluid communication and alignment with renal, celiac, and superior mesenteric arteries, while maintaining blood flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard endograft is used to treat an aneurysm in the main vessel, then the aneurysm is excluded and blood flow through the main vessel is restored, but blood flow to peripheral vessels (renal, celiac, superior mesenteric arteries) may be blocked
Solution Approach 1:
The endograft is divided into multiple segments: a main body portion and one or more branch portions that can be independently positioned and oriented. Each branch portion can be directed toward specific peripheral vessels (renal, celiac, superior mesenteric arteries) to maintain blood flow while the main body excludes the aneurysm.
Solution Approach 2:
The branch portions are designed to be adjustable in position and orientation relative to the main body portion. This dynamic configuration allows the device to adapt to different anatomical variations and selectively maintain patency of peripheral vessels during deployment.
2Adaptability or versatility
If an endograft is designed to accommodate various aneurysm locations and patient anatomies, then treatment versatility is improved, but device complexity increases
Solution Approach 1:
The branch portions are configured to be nested within or alongside the main body portion during delivery, allowing a complex multi-component device to be delivered through a single access point. The branches can then be deployed and positioned to accommodate various anatomical configurations.
Solution Approach 2:
The endograft design with adjustable branch portions serves multiple functions: excluding the aneurysm, maintaining blood flow to peripheral vessels, and adapting to different anatomical variations. This universal design reduces the need for multiple specialized devices for different patient anatomies.
Data Source
AI summary
The present embodiments describe a multi-component endograft having a first endograft with first and second wall openings, a second endograft with a third wall opening, a third endograft with a fourth wall opening, where during an adjustment state the second and third endografts are independently adjustable, both vertically along a longitudinal axis and rotationally relative to the longitudinal axis, (1) while keeping the perimeter of the third wall opening primarily encompassed by the perimeter of the first wall opening and (2) while keeping the perimeter of the fourth wall opening primarily encompassed by the perimeter of the second wall opening.