Radiation Imaging Case Corrosion Resistance Disinfectant
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Solution Overview
Problem
Portable radiation imaging apparatuses with metal casings corrode when disinfected with stronger disinfectant solutions like sodium hypochlorite, leading to image quality degradation due to disruption of the casing-radiation detector continuity.
Innovation Solution
The radiation imaging apparatus is designed with a case made from materials like carbon fiber reinforced plastics, glass fiber reinforced plastics, or corrosion-resistant metals, ensuring durability against disinfectant solutions, with only specific areas like the operation interface and connection parts being metal or metal-composite to prevent corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the casing is made of metal to improve robustness and reduce weight, then the mechanical strength and portability are improved, but the casing becomes susceptible to corrosion when disinfected with stronger disinfectant solutions
Solution Approach 1:
The patent applies different materials to different parts of the casing. Specifically, the front face and side faces that require frequent disinfection are made of non-metallic materials (resin or plastic) that are resistant to disinfectant solutions, while other parts of the casing can use metal materials for structural strength. This local differentiation resolves the contradiction between mechanical strength and corrosion resistance.
Solution Approach 2:
The patent employs composite material construction for the casing, combining metal components with non-metallic materials. The casing includes both metal parts (for strength and weight reduction) and non-metallic parts (for corrosion resistance during disinfection). This composite approach allows the apparatus to simultaneously achieve mechanical robustness and disinfectant resistance.
2Weight of moving object
If the casing is made of metal to reduce weight, then the portability is improved, but the continuity between casing and radiation detector is broken due to corrosion
Solution Approach 1:
The patent strategically places non-corrosive materials at critical locations where electrical continuity is required. The front face and side faces made of non-metallic materials prevent corrosion that would otherwise break the electrical connection between the casing and the radiation detector, thereby maintaining signal integrity while keeping the overall apparatus lightweight.
Solution Approach 2:
The non-metallic materials act as intermediary components that prevent direct contact between corrosive disinfectants and the metal parts of the casing. This intermediary layer protects the electrical continuity path from corrosion while allowing the metal components to maintain their weight-reducing benefits.
3Reliability
If a disinfectant solution with higher disinfection effect is used to improve infection control, then the disinfection capability is improved, but the casing material deteriorates due to corrosion
Solution Approach 1:
The patent makes the surfaces that come into contact with disinfectant solutions (front face and side faces) from non-metallic materials that are inherently resistant to corrosion from strong disinfectants. This allows the use of high-concentration disinfectant solutions for effective infection control without damaging the casing, as the corrosive effects are localized to materials that can withstand them.
Solution Approach 2:
The patent converts the potentially harmful effect of strong disinfectants into a beneficial situation by using materials that are specifically resistant to these disinfectants. The corrosive properties of strong disinfectants, which would damage metal, are instead applied to non-metallic surfaces that are immune to such corrosion, thereby enabling effective disinfection without structural damage.
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 design prevents corrosion and maintains image quality even when using disinfectants with higher disinfection effects, ensuring continuous operation and image integrity.
Implementation Method 1
a radiation detector that converts an intensity of received radiation into an electrical signal
Data Source
AI summary
Provided is a radiation detector that converts an intensity of received radiation into an electrical signal and a case that houses the radiation detector. An area of the case other than a predetermined area is formed of a material having durability against a disinfectant solution that has a higher disinfection effect than ethanol.