Adjustable Hemiarch Vascular Device for Aortic Repair
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Solution Overview
Problem
Conventional methods for treating aortic abnormalities, such as dissections, pose risks to patients and require multiple surgeries, with challenges in accurately sizing prosthetic grafts and addressing vascular pathologies in the aortic arch and other regions post-hemiarch replacement.
Innovation Solution
A vascular device comprising a main body and a secondary body that can be adjusted in size and configuration to fit the patient's anatomy, allowing for real-time accommodation of varying vessel diameters and lengths, with features like flared ends and sleeves to minimize endoleaks and facilitate hemostasis, enabling the device to be rotated and locked into position for optimal alignment with aortic branches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods are used to treat aortic abnormalities, then treatment can be provided, but patient risks increase and multiple surgeries are required
Solution Approach 1:
The patent combines hemiarch replacement and distal aorta treatment into a single integrated device and procedure. The main body replaces the hemiarch while the secondary body addresses distal aortic pathologies, eliminating the need for separate staged surgeries and reducing patient exposure to surgical risks.
Solution Approach 2:
The device is designed with multi-functional capabilities: the main body provides hemiarch replacement functionality while the secondary body can be extended to treat various distal aortic conditions including aneurysms and dissections. This universal design allows one device to perform multiple therapeutic functions that previously required separate procedures.
2Ease of manufacture
If fixed-size prosthetic grafts are used, then manufacturing is simplified, but accurate sizing for varying patient anatomy becomes difficult
Solution Approach 1:
The device incorporates dynamic sizing capabilities where the secondary body can be extended or retracted to accommodate varying lengths of distal aorta that require treatment. The adjustable configuration allows the device to adapt to different patient anatomies while maintaining standardized manufacturing processes for the base components.
Solution Approach 2:
The secondary body is designed to be nested within or alongside the main body in a compact delivery configuration, then extended to the required length post-deployment. This nesting approach allows fixed-size manufactured components to achieve variable final dimensions through controlled deployment.
3Ease of operation
If the device structure is simplified, then ease of operation improves, but the ability to address multiple aortic regions simultaneously is reduced
Solution Approach 1:
The device is segmented into functionally independent main body and secondary body components. The main body handles hemiarch replacement while the secondary body independently addresses distal aortic pathologies. This segmentation allows each component to be relatively simple in design while the combination provides comprehensive multi-region treatment capability.
Data Source
AI summary
Vascular devices and methods for addressing pathologies in the hemiarch of the aorta are provided. The device includes a main body and a secondary body. The main body has ends that are designed to be connected to corresponding ends of the native blood vessel. The secondary body has a free end and a fixed end that is engaged with an inner surface of the main body. The vascular device is movable from a retracted configuration, in which the secondary body is at least partially contained within the main body and the free end is on a proximal side of the fixed end, to an extended configuration, in which the secondary body is extended distally from the main body and the free end is on a distal side of the fixed end to address defects in the aorta downstream of the hemiarch.