Endoscope Light Source Narrowband Wavelengths Bleeding Point Visibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional endoscope systems require complex procedures, such as intravenous injection of medicinal agents, to clearly display blood vessels and bleeding points within the body, which can be cumbersome and invasive.
Innovation Solution
An endoscope system utilizing a color image pickup device and a light source that illuminates with specific narrowband wavelengths, allowing the processor to assign image signals to display channels to enhance visibility of bleeding points without the need for medicinal agents, using light in the range of 585 nm to 615 nm and 400 nm to 585 nm for improved image processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If intravenous injection of medicinal agents is performed to display blood vessels, then visibility of blood vessels is improved, but procedure complexity increases
Solution Approach 1:
The patent extracts and eliminates the need for medicinal agents (indocyanine green) from the observation process. Instead of injecting contrast agents, the system uses specific wavelength light (first wavelength band with peak at 585-615 nm) that naturally interacts with blood vessels to produce high-contrast images, thereby simplifying the procedure while maintaining or improving visibility.
Solution Approach 2:
The patent changes the illumination parameters by using specific wavelength bands (first wavelength band: 585-615 nm peak, second wavelength band: 400-585 nm) rather than broad-spectrum white light. This parameter change allows selective visualization of blood vessels and bleeding points based on their optical properties, achieving enhanced contrast without medicinal agents.
2Measurement precision
If intravenous injection of medicinal agents is performed to display blood vessels, then diagnostic accuracy is improved, but invasiveness increases
Solution Approach 1:
The patent removes the invasive element (intravenous injection of medicinal agents) from the diagnostic process. The system achieves high diagnostic accuracy by using non-invasive optical illumination with specific wavelength bands that exploit the natural optical characteristics of blood and blood vessels.
Solution Approach 2:
The patent enables the blood vessels and bleeding points to 'self-highlight' through their natural optical properties when illuminated with specific wavelength light. The hemoglobin in blood naturally absorbs and reflects the first wavelength band light, providing intrinsic contrast without requiring external contrast agents.
3Ease of operation
If conventional light observation is used, then procedure simplicity is maintained, but visibility of bleeding points deteriorates
Solution Approach 1:
The patent changes the illumination parameters from conventional white light to specific wavelength bands (first wavelength band: 585-615 nm peak, second wavelength band: 400-585 nm). This parameter change enhances the optical contrast of bleeding points by exploiting the specific absorption and reflection characteristics of blood at these wavelengths, thereby improving visibility while maintaining procedural simplicity.
Solution Approach 2:
The patent applies different wavelength bands to highlight different features: the first wavelength band (585-615 nm) specifically targets blood vessels and bleeding points due to hemoglobin absorption characteristics, while the second wavelength band (400-585 nm) provides complementary information. This localized optical property exploitation enhances bleeding point visibility without complicating the procedure.
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 enables clear and efficient visualization of bleeding points within the body, reducing the complexity of procedures and improving diagnostic accuracy by displaying bleeding points with high visibility without the need for medicinal agents.
Implementation Method 1
a color image pickup device configured to receive light from a subject and generate image pickup signals respectively corresponding to a plurality of different colors
Implementation Method 2
the red signal generated by the color image pickup device receiving return light from the subject illuminated with the light in the first wavelength band
Implementation Method 3
a light source device configured to simultaneously illuminate the subject with light in a first wavelength band having a spectral characteristic of a narrow band having a peak in a range from a wavelength of 585 nm to a wavelength of 615 nm and light in a second wavelength band having a spectral characteristic for making, among a red signal, a green signal, and a blue signal generated based on the image pickup signals respectively corresponding to the plurality of different colors, a pixel value of the red signal smallest
Data Source
AI summary
An endoscope apparatus includes a color image pickup device, a light source device configured to simultaneously illuminate the subject with light in a first wavelength band having a spectral characteristic of a narrow band having a peak in a range from a wavelength of 585 nm to a wavelength of 615 nm and light in a second wavelength band having a spectral characteristic for making, among a red signal, a green signal, and a blue signal, a pixel value of the red signal smallest, and a processor configured to assign either one of the red signal generated by return light from the subject illuminated with the light in the first wavelength band and the green signal or the blue signal generated by return light from the subject illuminated with the light in the second wavelength band to each of output channels corresponding to the respective colors in a display device.