Segmented Arch Fulcrum Catheter for Aortic Stability
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Solution Overview
Problem
Current endovascular devices face challenges in accessing tortuous and variant blood vessel anatomy, particularly during carotid stent procedures, due to recoil and displacement issues, which can lead to complications such as cerebral embolism and guide catheter prolapse, especially in anatomical variations like type III aortic arches.
Innovation Solution
A segmented shaped support catheter with specific geometric configurations, including multiple segments and bends, is designed to provide support by resting on anatomical structures, minimizing recoil and displacement, allowing for stable access to distal vessels without the need for extensive wire use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a guide catheter is used in remote access method, then carotid access can be achieved, but guide catheter prolapse and embolism risk increase
Solution Approach 1:
The catheter is divided into multiple segments (first segment, second segment, third segment) with different geometric configurations. Each segment serves a specific function: the first segment provides access, the second segment forms a fulcrum against the aortic arch, and the third segment extends to the target vessel. This segmentation allows the catheter to maintain stability while achieving remote access.
Solution Approach 2:
The catheter is pre-shaped with specific bends (first bend at 90°±35°, second bend at 90°±60°) before insertion. The second segment is configured to rest on the lesser curve of the aortic arch, creating a fulcrum that prevents recoil and displacement before the procedure even begins.
2Adaptability or versatility
If extensive wire use is employed to navigate tortuous anatomy, then vessel access can be achieved, but procedural complexity and time increase
Solution Approach 1:
The catheter incorporates specific geometric parameters (bend angles of 90°±35° and 90°±60°, segment lengths) that allow it to navigate tortuous anatomy and variant aortic arches (including type III) without requiring extensive wire manipulation. The pre-configured geometry adapts to the vessel anatomy.
3Stability of the object's composition
If a catheter is designed to resist recoil in tortuous anatomy, then stable access is achieved, but catheter rigidity may increase
Solution Approach 1:
The catheter is divided into segments that can be positioned at different locations. The second segment acts as a fulcrum against the aortic arch to prevent recoil, while other segments remain flexible for navigation. This segmented design provides localized rigidity where needed without making the entire catheter rigid.
Solution Approach 2:
The second segment of the catheter serves as an intermediary fulcrum that rests on the lesser curve of the aortic arch. This fulcrum mediates between the operator's control and the vessel anatomy, preventing recoil and displacement while allowing the rest of the catheter to remain flexible.
Data Source
AI summary
The present disclosure teaches a medical device and method of use, employing a tube which is composed of segments and bends capable being configured into unique shape that allows said device to use the lesser (inferior) curve of aortic Arch and other vessel structures as as fulcrums of support for a guide catheter, for subsequent prevention of recoil and displacement thereof, while delivering additional catheters or devices into the distal branches of the great vessels. A method for using same.