Blood Vessel Visualization Apparatus with Position-Dependent Light Source Angles
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Solution Overview
Problem
Existing blood vessel visualization apparatuses face challenges in achieving uniform luminance for imaging, particularly when dealing with non-uniform body thicknesses, leading to local brightness and darkness variations, which complicates image processing and reduces visibility of blood vessels.
Innovation Solution
A blood vessel visualization apparatus with a flexible fixing portion and a light source arrangement area that adjusts brightness and light distribution angle based on position, ensuring uniform luminance by varying the light sources' characteristics to match the thickness of the target site, thereby minimizing luminance variations and enhancing visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light sources are arranged in a wide area to reduce luminance variations, then luminance uniformity is improved, but light that goes around the target site increases causing transmitted light cancellation and reduced blood vessel visibility
Solution Approach 1:
The patent applies local quality by varying the light distribution angle of individual light sources based on their position in the array. Light sources at different locations have different emission angles tailored to their specific position, ensuring optimal light penetration through the target site while minimizing unwanted light scattering and cancellation effects.
Solution Approach 2:
The patent changes the light distribution angle parameter of light sources according to their position in the array. This parameter variation allows the system to optimize light penetration and reduce cancellation effects dynamically across different spatial locations, achieving both luminance uniformity and blood vessel visibility.
2Manufacturing precision
If the target site has non-uniform thickness, then anatomical accuracy is maintained, but local brightness and darkness variations occur making blood vessel distinction difficult
Solution Approach 1:
The patent addresses non-uniform target site thickness by applying local quality - each light source's distribution angle is customized according to its specific position and the local anatomical characteristics. This allows the system to maintain anatomical accuracy while compensating for thickness variations to achieve uniform luminance.
Solution Approach 2:
The patent employs dynamics by making the light distribution angle adjustable and position-dependent. The system dynamically adapts the optical parameters of light sources based on their location in the array and the local properties of the target site, enabling optimal performance across varying anatomical conditions.
3Length of moving object
If light distribution angle is increased to improve light penetration, then imaging depth is improved, but light scattering increases causing luminance variations
Solution Approach 1:
The patent resolves this contradiction by applying local quality - light distribution angle is not uniformly increased across all sources but is specifically tailored to each position. This localized optimization allows sufficient penetration depth at each location while maintaining overall luminance uniformity across the imaging area.
Solution Approach 2:
The patent uses parameter changes by adjusting the light distribution angle parameter in a position-dependent manner. Rather than a uniform increase, the angle is optimized locally at each position to achieve adequate penetration while preventing excessive scattering and luminance variations.
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 apparatus achieves uniform luminance and improved visibility of blood vessels by dynamically adjusting light source characteristics to match the body's thickness, suppressing luminance variations and allowing for clearer imaging.
Implementation Method 1
visualizes a blood vessel inside the living body with transmitted light having transmitted through the living body
Data Source
AI summary
A blood vessel visualization apparatus for visualizing a blood vessel inside a living body with light that has been transmitted through the living body includes: an irradiation unit configured to emit light from a contact portion with skin of the living body, the irradiation unit including: a fixing portion configured to be fixed to a target site of the living body, wherein the fixing portion includes a surface configured to contact the skin of the living body, and a plurality of light sources located in a light source arrangement area at the surface of the fixing portion that is configured to contact the skin of the living body. A brightness and/or a light distribution angle of respective ones of the light sources differ according to positions of the light sources in the light source arrangement area.