Precannulated Fenestration Wire for Endoluminal Prosthesis Delivery
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Solution Overview
Problem
The deployment of endoluminal prostheses with fenestrations in major vessels, such as the aorta, is complex due to the need for multiple steps and manipulation of multiple wires, which increases the risk of entanglement and damage to vessels or prostheses.
Innovation Solution
A delivery catheter system with a precannulated fenestration, where a wire is pre-positioned through the fenestration, reducing the number of steps and complexity by providing a stable pathway for cannulation and minimizing wire entanglement risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple wires are manipulated to cannulate fenestrations and target vessels, then complete cannulation can be achieved, but the complexity of the procedure increases and the risk of wire entanglement or damage increases
Solution Approach 1:
The wire is pre-positioned through the fenestration during prosthesis deployment, establishing the cannulation pathway in advance. This preliminary action eliminates the need for separate wire manipulation steps later, reducing procedural complexity while ensuring reliable cannulation of the target vessel
2Reliability
If multiple wires are manipulated to cannulate fenestrations and target vessels, then complete cannulation can be achieved, but the risk of wire entanglement or damage to vessels or prosthesis increases
Solution Approach 1:
The wire is threaded through the fenestration and positioned in the target vessel during the prosthesis deployment procedure itself. This preliminary positioning ensures proper wire placement before other devices are introduced, eliminating the need for subsequent wire manipulation that would increase entanglement risk
Solution Approach 2:
The wire acts as an intermediary element that establishes a stable pathway through the fenestration. By having this intermediary in place during deployment, it guides subsequent catheters and devices through the fenestration without requiring additional wire manipulation, thereby reducing entanglement hazards
Data Source
AI summary
Devices for delivering and deploying an endoluminal prosthesis are disclosed and comprise a delivery catheter, an endoluminal prosthesis disposed at a distal end portion of the delivery catheter, and a wire. The prosthesis comprises a tubular graft having at least one fenestration. The wire extends distally from a first wire end through an axial lumen of the delivery catheter and the prosthesis, and through the fenestration in the graft. The wire extends proximally through a lumen of the prosthesis and through an axial lumen of the delivery catheter towards a second wire end. Additional devices, systems, and methods are disclosed.