Universal Fenestrated Endograft Cannulation
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Solution Overview
Problem
Current endografts face challenges in accommodating varying branch vessel morphologies and angles, leading to potential blockage of blood flow and requiring custom-made devices that are costly and complex to manufacture, with difficulties in precise cannulation of branch arteries.
Innovation Solution
The development of universal fenestrated endografts with integrated cannulation members, featuring external orifices, tubular segments, and internal orifices that accommodate various branch morphologies, allowing for direct connection to branch arteries without additional incisions, and universal branched endografts with multiple lumens for efficient treatment of multiple branches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If custom-made endografts are constructed to accommodate specific branch vessel distances and angles, then the device can precisely fit patient anatomy, but the manufacturing cost increases and production time is extended
Solution Approach 1:
The patent applies universality by designing a standardized endograft platform with pre-configured fenestrations and integrated cannulation members that can accommodate multiple branch vessel configurations. The device uses universal connection interfaces and adjustable positioning mechanisms to adapt to different patient anatomies without requiring custom manufacturing for each case, thereby reducing production complexity while maintaining anatomical accommodation capability
2Adaptability or versatility
If custom-made endografts are constructed for each patient, then the device can be precisely tailored to individual anatomy, but the overall treatment cost increases
Solution Approach 1:
The patent implements a universal endograft design that can be used across multiple patients with different anatomical variations. The device incorporates adjustable fenestration positioning, standardized connection interfaces, and modular components that allow adaptation to individual patient needs without requiring custom manufacturing, thereby maintaining anatomical accommodation while significantly reducing per-patient treatment cost
3Reliability
If fenestrations are aligned with branch vessels in symmetric vasculature, then blood flow can be maintained, but the device may shift due to physiological forces causing offset from the branch
Solution Approach 1:
The patent applies dynamics by incorporating flexible positioning mechanisms and compliant mounting structures that allow the fenestrations and cannulation members to adapt to physiological movements and forces. The device includes adjustable attachment points and flexible connection elements that maintain proper alignment with branch vessels despite cardiac motion, respiratory movement, and vascular pulsation, thereby ensuring both blood flow maintenance and device position stability
4Ease of operation
If integrated cannulation members are added to facilitate branch cannulation, then the cannulation procedure is simplified, but the device structure becomes more complex
Solution Approach 1:
The patent applies merging by integrating the cannulation members directly into the endograft structure, combining the functions of vessel access, alignment guidance, and connection establishment into a single unified device. The cannulation members are built-in components with standardized interfaces that simplify the procedural steps while the overall device complexity is managed through modular design and standardized manufacturing processes
Data Source
AI summary
Universal endovascular grafts are provided for evaluation and repair of damaged or aneurismal blood vessels. More particularly, the present invention relates to universal fenestrated and universal branched endografts for repair of blood vessels with branches, methods for implanting the endografts in the vessel and for making connection with one or more branches. The universal fenestrated endografts have a body with a first end, a second end, a first wall, a second wall, and an interior passage or lumen. The body further includes openings in communication with the passage at the first and second ends and one or more lateral fenestrations in communication with the lumen. The body further has a necked portion between the ends and a cannulation member. The universal branched endografts have a tubular body with a main lumen and four branch lumens. A large branch extends from the body. The four lumens are positioned about a circumference of the tubular body.