Pivoting Fenestration for Endoluminal Prosthesis Branch Vessel Sealing

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Solution Overview

Problem

Endoluminal prostheses often struggle to accommodate branch vessels effectively, leading to potential blockage or insufficient sealing in cases of aneurysms or vascular damage, particularly due to insufficient healthy tissue near branching vessels.

Innovation Solution

The development of an endoluminal prosthesis with pivotable fenestrations that can dynamically adjust to accommodate the geometry of aortic branches, allowing branch vessel stents or grafts to pivot into various orientations for proper sealing and blood flow, enabling a single geometry to fit a variety of patient anatomies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed geometry prosthesis is used, then manufacturing is simplified, but it cannot accommodate variable patient anatomy and dynamic geometry of aortic branches

Engineering Contradiction:

Improveaccommodation of patient anatomy variabilityVSAvoidprosthesis structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The prosthesis incorporates a pivotable fenestration that can dynamically change orientation to accommodate variable patient anatomy and the dynamic geometry of aortic branches. The fenestration is connected to the prosthesis body through a pivot mechanism that allows rotational movement, enabling the device to adapt to different anatomical configurations without requiring multiple custom-designed prostheses.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If the fenestration is made pivotable to accommodate dynamic geometry, then adaptability to patient anatomy is improved, but the device complexity increases

Engineering Contradiction:

Improveaccommodation of branch vessel orientationVSAvoidfenestration mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fenestration is segmented from the main prosthesis body through a pivot connection, allowing independent movement of the fenestration component. This segmentation enables the fenestration to pivot and orient itself according to the specific anatomical requirements of each patient's aortic branches, while the main prosthesis body remains stable.

Inventive Principle:

Principle #1Segmentation

3Ease of manufacture

If a single geometry prosthesis is used, then customization is reduced, but it cannot ensure proper sealing for varied anatomies

Engineering Contradiction:

Improvestandardization of prosthesisVSAvoidsealing effectiveness

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The prosthesis is designed as a universal device with a pivotable fenestration that can accommodate a wide range of patient anatomies and branch vessel orientations. This single standardized prosthesis design can be used across different patients without requiring custom manufacturing, while the pivotable fenestration ensures proper sealing effectiveness for each individual's unique anatomy.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10188503B2Prosthesis having pivoting fenestration

Publication Date: 2019.01.29 COOK MEDICAL TECHNOLOGIES LLC

AI summary

The present disclosure relates to an endoluminal prosthesis, such as a stent graft that includes one or more fenestrations to accommodate endovascular disease, such as an aneurysm in cases where one or more side branches is involved. In one aspect, the prosthesis includes fenestrations that are pivotable to accommodate the dynamic geometry of the aortic branches.