Expandable Component Guide Wire Anchoring for Vascular Stability
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Solution Overview
Problem
Diagnostic and therapeutic vascular catheterization procedures face challenges with guide wire positioning and vessel trauma due to the difficulty in maintaining wire position across lesions and the risk of dissection and occlusion, especially when using conventional guide wires and expansion devices.
Innovation Solution
The implementation of an expandable component anchored guide wire system, where a small inflatable expandable component is placed distal to the lesion to anchor the guide wire, preventing it from being pulled backward and minimizing vessel trauma by using a tip expandable component to prevent injury during forward movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional guide wire is used to cross a lesion, then the guide wire can be advanced through the vessel, but the guide wire position is unstable and it may be pulled backward across the lesion during device delivery
Solution Approach 1:
The expandable component is deployed in advance at a position distal to the lesion before device delivery, creating an anchor point that prevents guide wire backward movement during subsequent manipulation and device crossing operations
Solution Approach 2:
The expandable component serves as an intermediary anchoring structure between the guide wire and the vessel wall, providing stable positioning without requiring direct fixation of the guide wire itself
2Productivity
If the guide wire is pushed forward to cross a resistant lesion, then the lesion can be accessed for treatment, but the guide wire tip may injure the vessel through to and fro motion
Solution Approach 1:
The expandable component is positioned and deployed before attempting to cross the lesion, providing a stable anchor that eliminates to-and-fro wire motion and prevents vessel injury during lesion crossing operations
Solution Approach 2:
The expandable component acts as a sacrificial protective element that can be deployed and then deflated, providing temporary protection during the critical wire crossing phase without causing long-term damage to the vessel
3Force
If leverage is applied to deliver a stent through a tight lesion, then the stent can be pushed across the lesion, but the guide wire is pulled backward and may be completely withdrawn from the artery
Solution Approach 1:
The expandable component is deployed in advance to create an anchor point before stent delivery, ensuring the guide wire remains fixed in position even when significant force is applied to push the stent through tight lesions
Solution Approach 2:
The expandable component provides a counterbalancing anchoring force that opposes the backward pulling force generated during stent delivery, preventing guide wire withdrawal from the artery
4Ease of operation
If the guide wire tip moves back and forth during device advancement, then the device can be positioned, but dissection and vessel occlusion may occur
Solution Approach 1:
The expandable component is deployed before device positioning operations, creating a stable anchor that eliminates guide wire tip movement and prevents dissection and vessel occlusion during the positioning process
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively maintains guide wire position across lesions, reduces the risk of vessel trauma, and prevents dissection and occlusion, enhancing the safety and efficacy of vascular treatments by stabilizing the guide wire and minimizing endothelial contact.
Implementation Method 1
a small inflatable expandable component is placed distal to the lesion to anchor the guide wire
Implementation Method 2
minimizing vessel trauma by using a tip expandable component to prevent injury during forward movement
Data Source
AI summary
A catheter device and related method for diagnostic vascular treatment and/or therapeutic vascular treatment of a subject's vasculature having a lesion. The device including: a guide catheter comprising a shaft having a proximal portion and a distal portion; a guide wire disposed in the guide catheter shaft having a proximal portion and a distal portion, the guide wire transfers beyond the lesion during at least a portion of the vascular treatment and/or therapeutic vascular treatment; and one or more expandable component disposed at the distal portion of the guide wire. The expandable component(s) may be positioned distally beyond the lesion during at least a portion of the vascular treatment and/or therapeutic vascular treatment. The expandable component(s) being used to: anchor said guide wire to mitigate and/or prevent loss of guide wire position during at least a portion of the vascular treatment and/or therapeutic vascular treatment; and avoid and/or mitigate trauma to the vasculature during at least a portion of the vascular treatment and/or therapeutic vascular treatment.