Spiral Endovascular Guide Wire Stability Control
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Solution Overview
Problem
Current endovascular guide wires lack stability and control, making it challenging to deliver devices in complex anatomies during vascular procedures.
Innovation Solution
An endovascular guide wire with an elongated proximal section, a distal tip, and intermediate sections featuring a three-dimensional spiral structure, which enhances stability and control by deflecting the tip from vessel walls and providing radial expansion for vessel stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional straight guide wire structure is used, then the wire is simple and easy to manufacture, but the wire lacks stability and control when navigating tortuous vessels
Solution Approach 1:
The patent applies this principle by transitioning from a traditional straight or simple curved wire structure to a three-dimensional spiral configuration. The spiral structure adds a third dimension of control, allowing the wire to interact with vessel walls in multiple planes simultaneously, thereby enhancing stability and control during navigation through tortuous vessels while maintaining manufacturability through standardized coiling processes
2Reliability
If the guide wire is made more rigid to improve stability, then control is improved, but the wire loses flexibility needed to navigate tortuous vessels
Solution Approach 1:
The patent segments the guide wire into distinct functional zones: a proximal section with a specific spiral configuration for stability, and a distal section with a different spiral configuration for flexibility and tip control. This segmentation allows each portion to be optimized independently - the proximal section provides anchoring stability while the distal section maintains the flexibility needed to navigate tortuous vessel anatomy
Solution Approach 2:
The patent applies local quality by varying the spiral parameters (such as coil density, diameter, and pitch) at different locations along the wire length. The proximal section has a tighter spiral configuration for stability, while the distal section has a more open configuration for flexibility, allowing the wire to simultaneously achieve both stability and adaptability to tortuous vessel paths
Data Source
AI summary
Provided herein is an endovascular guide wire comprising an elongated proximal section; a distal tip; and one or more intermediate sections disposed between the proximal section and distal tip. The one or more intermediate sections includes a three-dimensional spiral structure. The spiral structure can also be funnel-shaped. Also provided are systems include the endovascular guide wire and a catheter.