Modular Vascular Repair Device with Nested Sub-Prostheses
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Solution Overview
Problem
Current treatments for thoracoabdominal aortic disease, such as aneurysms and dissections, are associated with high surgical complications due to the complexity of endovascular repair methods, which require precise re-routing of blood vessels to prevent organ damage.
Innovation Solution
A vascular repair device comprising a main prosthesis with internal and sub-prostheses that provide fenestrations for fluid communication, allowing for modular assembly and precise placement during endovascular procedures, reducing the risk of complications by enabling graduated error margins and targeted treatment of aortic pathologies near critical arteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If open repair or traditional endovascular repair is used for thoracoabdominal aortic disease, then the aorta can be treated, but surgical complications and mortality risk are high due to the complexity of vessel re-routing
Solution Approach 1:
The vascular repair device is divided into multiple modular segments including a main prosthesis with fenestrations, internal prostheses, and sub-prostheses. Each segment can be independently delivered and positioned, eliminating the need for complex surgical re-routing while maintaining reliable blood flow to branch vessels. The modular design allows sequential assembly within the aorta, reducing overall procedural complexity and improving surgical outcome reliability.
2Manufacturing precision
If traditional endovascular repair methods are used, then less invasive treatment is achieved, but precision and accuracy are insufficient for treating aortic pathologies near critical arteries
Solution Approach 1:
The main prosthesis is pre-configured with fenestrations at specific locations that correspond to branch vessel origins. Internal and sub-prostheses are pre-assembled within the main prosthesis structure, with their proximal ends positioned distally to the main prosthesis proximal open end. This preliminary configuration enables precise placement near critical arteries while simplifying the deployment procedure, as the complex multi-lumen structure is already assembled before delivery.
3Productivity
If complex vessel re-routing is performed to treat thoracoabdominal aortic disease, then organ perfusion can be maintained, but the procedure time and surgical risk increase
Solution Approach 1:
The device employs a nested configuration where internal prostheses are positioned within the main prosthesis lumen, and sub-prostheses are positioned within the internal prostheses. This nested arrangement allows multiple vascular channels to be established simultaneously through a single delivery system, eliminating the need for sequential complex re-routing procedures. The result is reduced procedure time while maintaining efficient blood flow to multiple branch vessels.
Data Source
AI summary
A vascular repair device assembly includes a main prostheses, first internal prostheses, an optional second internal prostheses, and at least two sub-prostheses. Methods for delivering vascular repair devices include delivering a vascular repair device through a blood vessel to the aneurysm site, aligning a proximal open end of a main prosthesis cranially to the site of the aneurysm patient and directing a distal end of at least one additional one vascular repair device through a proximal end of at least a first internal lumen, and aligning the proximal end of the additional vascular repair device into a distal end of the at least one sub-prosthesis.