Medical Guide Wire Visibility via Colored Helical Marker
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Solution Overview
Problem
Conventional medical guide wires with visible markers on their surface suffer from excessive light reflection, leading to poor visibility under endoscope images due to halation, making it difficult to see the guide wire's position and movement.
Innovation Solution
A medical guide wire with a flexible wire body coated in a transparent material, featuring a helically arranged wire material with a regular pitch, and a coloring layer in colors like black, white, yellow, blue, and green, which reduces excessive light reflection by forming an outermost layer with controlled glossiness, enhancing visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If visible markers such as stripes are added to the surface of the wire body, then the position of the medical guide wire can be easily confirmed, but excessive light reflection occurs causing halation and poor visibility in endoscope images
Solution Approach 1:
The patent applies color changes by using a coloring layer with specific colors (black, white, yellow, blue, or green) on the wire body surface. This allows the guide wire to be visible in endoscope images without causing excessive light reflection, as the colored surface absorbs rather than reflects light, eliminating the halation problem while maintaining visibility.
Solution Approach 2:
The patent uses a composite structure consisting of a wire body, a coloring layer, and a transparent covering layer. This composite material approach combines the mechanical properties of the wire body with the optical properties of the coloring layer and covering layer, achieving both visibility and reduced light reflection simultaneously.
2Object-generated harmful factors
If the surface of the wire body is made transparent to reduce light reflection, then halation is reduced, but the visibility of the guide wire in endoscope images decreases
Solution Approach 1:
The coloring layer provides specific colors that are visible under endoscope imaging while the transparent covering layer reduces light reflection. The colored surface absorbs light rather than reflecting it, eliminating halation, while the color itself remains visible in the endoscope image, solving both problems simultaneously.
Solution Approach 2:
The patent applies different properties to different layers: the coloring layer provides visibility through color, while the transparent covering layer provides reduced light reflection. Each layer has a specific local function that contributes to the overall solution, with the coloring layer addressing visibility and the covering layer addressing light reflection.
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
The solution provides excellent visibility by minimizing excessive light reflection and allowing the guide wire to be easily recognizable under endoscope imaging, with the wire material shining in dots or lines, facilitating accurate positioning and movement tracking.
Implementation Method 1
light is unnecessarily reflected on its surface and endoscope images of the surface of the medical guide wire become white in a wide area and difficult to see due to the light emitted from the distal end of the endoscope (halation)
Data Source
AI summary
A medical guide wire with excellent visibility is provided. A medical guide wire including: a wire body (2) that is flexible and long; a covering layer (3) covering a surface of the wire body (2); and a wire material (4) helically arranged on the covering layer (3), wherein the covering layer (3) is formed of a transparent material same as a transparent material of the wire material (4), and the wire material (4) is arranged at a regular pitch along the longitudinal direction of the wire body (2).