Preloaded Wire for Endoluminal Device Fenestration Access
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Solution Overview
Problem
The deployment of endoluminal prostheses in major vessels with intersecting branch vessels is complex due to the need for multiple steps and wires, requiring skilled manipulation to avoid entanglement and damage, especially when multiple fenestrations and vessels are involved.
Innovation Solution
A system with a precannulated fenestration in the endoluminal prosthesis allows a guide wire to enter, exit, and traverse the prosthesis, reducing the number of steps and devices needed, and decreasing complexity by positioning the wire between fenestrations without extending distally beyond the prosthesis, facilitating easier access and deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple guide wires are delivered through multiple fenestrations to reach target vessels, then access to multiple branch vessels is achieved, but the procedure becomes labor intensive and complex with increased risk of wire entanglement and damage
Solution Approach 1:
The guide wire is pre-configured with a precannulated fenestration structure that allows it to be delivered through a single fenestration while already positioned to access multiple target vessels. This preliminary configuration eliminates the need to manipulate multiple separate wires through multiple fenestrations, reducing procedural complexity while maintaining access to multiple branch vessels
2Adaptability or versatility
If multiple catheters and wires are manipulated simultaneously to cannulate fenestrations and target vessels, then complete access is achieved, but the procedure becomes labor intensive and skill-dependent
Solution Approach 1:
The invention merges the functions of multiple guide wires into a single integrated guide wire structure with a precannulated fenestration. This single wire performs the work of multiple wires by providing simultaneous access pathways to multiple target vessels through its precannulated structure, thereby simplifying manipulation and reducing the skill-dependent nature of the procedure
3Adaptability or versatility
If guide wires are extended distally beyond the prosthesis to reach target vessels, then vessel access is achieved, but the risk of wire entanglement and inadvertent contact with prosthesis or vessel wall increases
Solution Approach 1:
The guide wire is designed with a nested structure where the wire is contained within a delivery catheter until deployment. The precannulated fenestration allows the wire to be positioned within the prosthesis structure itself, nesting the wire pathway within the prosthesis rather than having it extend freely distally. This eliminates entanglement risks and prevents inadvertent contact with vessel walls while maintaining access to target vessels
Data Source
AI summary
A system may include an endoluminal prosthesis and a guide wire. The prosthesis may include a tubular body including a graft material wall, a proximal end opening, a distal end opening, and a lumen extending longitudinally therein. The prosthesis may include first and second fenestrations in the graft material wall. The first and second fenestrations may be spaced from one another circumferentially about the tubular body. The guide wire may have a first end and a second end both extending from a region proximal of the proximal end opening. The guide wire may enter the proximal end opening, exit the first fenestration, partially traverse an exterior surface of the prosthesis, enter the second fenestration, and exit the proximal end opening. One or more of the fenestrations may include a branch.