Sterilizing Apparatus Wavelength Control for Surgical Safety
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Solution Overview
Problem
Existing ultraviolet sterilization techniques for surgical sites face challenges in safely sterilizing without harming human body cells and visualizing the irradiation range, leading to difficulties in operability and effectiveness in reducing surgical site infections.
Innovation Solution
A sterilizing apparatus that emits first wavelength light with a peak between 190 nm and 230 nm for sterilization and second wavelength light with a peak between 400 nm and 780 nm for visualization, using a semiconductor laser and frequency-doubling element to ensure safety and operability, with controlled light intensity and beam diameter for precise targeting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultraviolet rays are radiated onto a surgical site for sterilization, then sterilization effect is improved, but harm to human body cells increases
Solution Approach 1:
The patent applies parameter changes by precisely controlling the wavelength parameter of ultraviolet light to fall within 190-230 nm. This specific wavelength range was selected because it achieves effective sterilization while minimizing harm to human cells, resolving the contradiction between sterilization effectiveness and cellular safety
Solution Approach 2:
The patent introduces a spectrum filter element as an intermediary component between the ultraviolet lamp and the surgical site. This filter acts as a mediator that selectively transmits only the beneficial 190-230 nm wavelength range while blocking harmful wavelengths, thus enabling effective sterilization without cell damage
2Reliability
If only ultraviolet rays are radiated for sterilization, then sterilization effectiveness is improved, but visualization of irradiation range becomes difficult
Solution Approach 1:
The patent merges two functions into a single system: ultraviolet radiation for sterilization and visible light emission for visualization. The ultraviolet lamp simultaneously performs both sterilization (via UV rays) and illumination (via visible light), allowing surgeons to see the irradiation area while maintaining sterilization effectiveness
Solution Approach 2:
The ultraviolet lamp is designed with multi-functionality, serving both as a sterilization source (emitting UV rays) and as an illumination source (emitting visible light). This universal device eliminates the need for separate sterilization and visualization equipment, improving ease of operation while maintaining sterilization effectiveness
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 effectively sterilizes microbial bacteria while minimizing harm to somatic cells and visualizes the irradiation range, enhancing safety and operability, reducing the risk of surgical site infections and improving surgical efficiency.
Implementation Method 1
an ultraviolet lamp that emits ultraviolet rays of a wavelength range of approximately 190 nm to 230 nm
Implementation Method 2
sterilize microbial bacteria without harming human body cells
Implementation Method 3
a spectrum filter element such as multilayer dielectric filter or a chemical filter that substantially prevents the inclusion of light outside of the aforementioned wavelength range
Implementation Method 4
prevents the inclusion of light outside of the aforementioned wavelength range
Implementation Method 5
radiating visible light rays together with ultraviolet rays, the irradiation range of the ultraviolet rays is visualized
Data Source
AI summary
A sterilizing apparatus having both excellent safety and operability is provided. A sterilizing apparatus (1) according to an aspect for carrying out the present invention is a sterilizing apparatus (1) that radiates light including ultraviolet rays onto an affected area (6), wherein first wavelength light (Lλ1) having a peak wavelength in a wavelength range of 190 nm or more and 230 nm or less, and second wavelength light (Lλ2) having a peak wavelength in a wavelength range of 400 nm or more and 780 nm or less are emitted.