Pivotable Fenestration Prosthesis Sealing Unused Passageways
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Solution Overview
Problem
Current endoluminal prosthesis systems face challenges in accommodating branch vessels during vascular interventions, particularly when there is insufficient healthy tissue near branching vessels, leading to potential blockage or the need for labor-intensive and costly modifications to ensure proper blood flow.
Innovation Solution
A prosthesis system with pivotable fenestrations and a sealing mechanism that includes a tubular extension and pocket structure, allowing for dynamic adjustment and sealing of unused passageways to accommodate varying anatomical conditions, ensuring unobstructed blood flow through branch vessels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a prosthesis with fixed fenestrations is used to accommodate branch vessels, then blood flow through branch vessels can be maintained, but the prosthesis cannot adapt to varying anatomical geometries and dynamic movement of vessels
Solution Approach 1:
The fenestration is designed to pivot relative to the prosthesis body, transforming from a fixed structure to a dynamic one. The pivotable fenestration can rotate to align with branch vessels at different angles and positions, allowing the prosthesis to adapt to varying anatomical geometries while maintaining a relatively simple overall structure.
2Reliability
If back table modification or custom device fabrication is performed to accommodate unused passageways, then proper sealing and blood flow can be ensured, but the procedure becomes labor intensive and costly
Solution Approach 1:
The prosthesis is pre-configured with multiple passageways and a pivotable fenestration mechanism during manufacturing. This preliminary preparation allows the device to be directly implanted without requiring labor-intensive back table modifications or custom fabrication, thereby improving procedural efficiency while maintaining reliable sealing through the pre-designed pivotable structure.
3Reliability
If the prosthesis is designed to seal against the aortic wall near branch vessels, then vascular integrity can be preserved, but blood flow through branch vessels may be blocked due to insufficient healthy tissue
Solution Approach 1:
The pivotable fenestration allows the prosthesis to dynamically adjust its orientation and position relative to branch vessels. This dynamic capability enables the prosthesis to maintain an effective seal against the aortic wall for vascular integrity while simultaneously accommodating blood flow through branch vessels by pivoting the fenestration to the appropriate angle, even when healthy tissue near the branch vessels is insufficient.
Data Source
AI summary
An endoluminal prosthesis system includes a tubular graft (72) having a pocket (200) on the exterior of a graft (72). The graft (72) further includes a wire (218) extending within a lumen of the graft, with the wire (218) extending through the passageway and into the pocket (200). A branch extension (92) can be inserted over the wire (218) and into engagement with the pocket (200) and the passageway, where the branch extension (92) can be sealed with the pocket (200) and the passageway to seal the otherwise unused passageway in the graft (72).