Expandable Endograft With Occlusive Wall for Controlled Lumen Closure
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Solution Overview
Problem
Current medical procedures lack effective percutaneous intravascular methods for partially or fully occluding luminal organs, such as arteries, using stents and endografts.
Innovation Solution
An expandable endograft device with a stent portion and an expandable wall portion that can receive substances like ameroid particles, which expand to occlude the lumen by chemical reactions with body materials or injected substances, allowing partial or full occlusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional stents and endografts are used for intravascular procedures, then structural support is provided, but the ability to partially or fully occlude the luminal organ is limited
Solution Approach 1:
The patent employs a nested structure where an inner balloon is positioned inside the endograft device. The inner balloon can be inflated to deliver occlusive substance into the endograft's lumen, enabling partial or full occlusion. This nested configuration allows the occlusion function to be integrated within the existing endograft structure without requiring a completely separate device, thus enhancing adaptability while controlling complexity.
Solution Approach 2:
The patent introduces an intermediary mechanism (the inner balloon) that facilitates the delivery of occlusive substance into the endograft lumen. This intermediary allows for controlled delivery of the substance through a delivery catheter, enabling precise occlusion control. The intermediary approach provides a systematic method to achieve occlusion without directly complicating the endograft structure itself.
2Reliability
If percutaneous intravascular occlusion is attempted with existing devices, then procedural simplicity is maintained, but effective occlusion is not achieved
Solution Approach 1:
The patent employs preliminary action by first deploying the endograft device to establish structural support and define the treatment site, then subsequently delivering the occlusive substance through the inner balloon mechanism. This staged approach ensures reliable occlusion by first securing the device position and then delivering the occlusive agent under controlled conditions, improving reliability while managing procedural complexity through systematic sequencing.
Solution Approach 2:
The patent segments the occlusion procedure into distinct functional components: the endograft structure provides structural support, the inner balloon provides delivery mechanism, and the occlusive substance provides the actual occlusion. This segmentation allows each component to be optimized for its specific function, improving overall occlusion effectiveness while maintaining ease of operation through modular functionality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables partial or full occlusion of luminal organs through percutaneous intravascular procedures, providing controlled lumen closure without external intervention.
Implementation Method 1
The inner balloon can have a reactive material, such as glucose, that reacts with oxygen in the body to produce carbon dioxide
Implementation Method 2
expanding said endograft device within the luminal organ; and injecting a substance into said wall portion, so that said wall portion expands to occlude the luminal organ
Data Source
AI summary
Expandable endograft devices, systems, and methods of using the same to partially or fully occlude a luminal organ. An endograft device described herein may include a stent portion and a wall portion, wherein the wall portion is configured to receive a substance therein.