Modular Endo-Aortic Device for Adjustable Sealing
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Solution Overview
Problem
Current techniques for treating aortic dissections and ascending aortic aneurysms are inadequate, as they fail to effectively create proximal and distal seal zones within the aorta and do not allow for future valve re-interventions or accommodate anatomical variations.
Innovation Solution
A modular device comprising a proximal and distal portion with stent portions that can be adjusted in diameter by translating these portions, allowing for effective sealing and future interventions, while accommodating variations in aortic arch size and anatomy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current techniques are used to treat aortic dissections, then the initial intimal tear can be covered, but the false lumen cannot be effectively closed and anatomical variations cannot be accommodated
Solution Approach 1:
The device is divided into multiple modular segments including a proximal portion with proximal stent, a distal portion with distal stent, and an intermediate portion. Each segment can be independently adjusted to accommodate different anatomical configurations and create effective seal zones at both proximal and distal ends of the dissection.
Solution Approach 2:
The stent portions are designed with adjustable diameter capabilities through translation of the proximal and distal portions relative to each other. This dynamic adjustment allows the device to adapt to various aortic arch sizes and anatomical variations while maintaining effective sealing.
2Adaptability or versatility
If a fixed diameter stent is used, then the device structure is simple, but it cannot accommodate variations in aortic arch size
Solution Approach 1:
The stent incorporates a dynamic diameter adjustment mechanism where translation of the proximal portion or distal portion along the longitudinal axis changes the expanded diameter. This allows a single device to adapt to different aortic arch sizes without requiring multiple fixed-diameter devices.
Solution Approach 2:
The device changes its physical parameter (diameter) through mechanical translation of components. By moving the proximal and distal portions relative to each other, the stent diameter can be adjusted to match the patient's specific aortic arch dimensions.
3Reliability
If current endovascular repair techniques are used, then some seal zones can be created, but future valve re-interventions are not allowed
Solution Approach 1:
The modular design separates the valve component from the sealing portions, allowing the valve to be accessed and potentially replaced while preserving the proximal and distal seal zones. This segmentation enables future re-interventions without compromising the established seal zones.
Data Source
AI summary
A device for placement in the aortic arch of a patient is provided. The device includes a distal portion for being engageably received in an aortic arch of a patient beyond the left subclavian artery and a stent portion fluidly engaged with the distal portion, the stent portion being permeable and configured to span a portion of the aortic arches to which the brachiocephalic trunk, left common carotid artery, and left subclavian artery attach to the aortic arch. A diameter of the stent portion may be modified by translation of the proximal portion to thereby alter a length of the stent portion thus causing modification of the diameter of the stent portion to fit anatomical features of differing dimensions.