Fluorescent Surgical Wrap for Hidden Tear Detection
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Solution Overview
Problem
Surgical instrument wraps are prone to damage during storage and handling, leading to potential contamination of internal instrumentation due to undetectable tears or punctures, which can cause surgical site infections.
Innovation Solution
A surgical instrument wrap with a heat-resistant, gas-permeable fluorescent layer that becomes visible under specific light wavelengths when damaged, indicating potential contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional non-fluorescent wrap is used, then the wrap maintains good visual appearance and does not interfere with instruments, but damage such as tears and punctures cannot be detected during routine inspection
Solution Approach 1:
The wrap incorporates a fluorescent layer that changes its optical properties under UV light. When intact, the wrap appears normal under visible light. When damaged, the fluorescent layer becomes visible under UV illumination, providing a clear visual indicator of tears, punctures, or disruptions in the wrap integrity.
Solution Approach 2:
The fluorescent layer acts as an intermediary indicator system between the wrap structure and the inspection process. This intermediate fluorescent material provides a detectable signal that mediates the detection of damage, allowing inspectors to easily identify wrap defects without directly examining the wrap fibers themselves.
2Reliability
If a fluorescent damage detection layer is added to the wrap, then damage can be easily detected under UV light, but the wrap may discolor surgical instrumentation
Solution Approach 1:
The fluorescent properties are localized specifically to the damage detection layer, while the rest of the wrap structure and the instruments maintain their original properties. The fluorescent layer is designed to fluoresce only at the site of damage, providing localized indication without affecting the overall appearance or causing discoloration of the instruments.
Solution Approach 2:
The potential harmful effect of fluorescence is converted into a beneficial localized indicator. Instead of the entire wrap or instruments fluorescing and causing discoloration, the fluorescence is strategically confined to appear only where damage occurs, transforming what could be a harmful visual interference into a useful damage indicator.
3Reliability
If the fluorescent layer is made highly permeable to allow steam and gas penetration, then sterilization effectiveness is improved, but the fluorescent agent may diffuse prematurely before sterilization
Solution Approach 1:
The wrap structure undergoes parameter changes during sterilization - the heat and moisture cause the wrap fibers to contract and tighten, which in turn secures the fluorescent layer more firmly in place. This parameter change during the sterilization process actually improves the stability of the fluorescent layer, preventing premature diffusion while maintaining sterilization effectiveness.
Solution Approach 2:
The fluorescent layer is positioned and secured in advance before sterilization occurs. The wrap structure is designed to hold the fluorescent layer in place during the sterilization process, providing beforehand protection against premature diffusion while still allowing necessary steam and gas penetration for effective sterilization.
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
Ensures sterility of surgical instruments by quickly detecting wrap damage, reducing the risk of contamination and infections through easy visual inspection.
Implementation Method 1
at least one diffusible agent layer comprising a diffusible agent which fluoresces when exposed to a light having a predetermined light wavelength
Implementation Method 2
upon a disruption or damage to at least one fiber of the at least one fibrous layer, at least a portion of the at least one diffusible agent layer diffuses into the disrupted or damaged at least one fiber
Data Source
AI summary
A surgical instrument wrap having at least one or a plurality of fibrous layers that cooperate with at least one agent or dye layer that is generally not visible until the at least one or plurality of fibrous layers is damaged or disrupted. The at least one diffusible agent or dye layer diffuses or wicks into the disrupted or damaged area. A fluorescent dye, a reactive dye, a conjugant dye or an absorption wavelength of approximately 200-400 nanometers in one embodiment and an emission wavelength in the visible spectrum so that when the surgical wrap is damage or disrupted and then exposed to, for example, a fluorescent or ultraviolet light source, the agent or dye fluoresces to provide an indication to the user that damage to the wrap has occurred. The user can presume that the items or instruments in the surgical tray may be contaminated.