Antimicrobial Light Dressing for Percutaneous Insertion Sites
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Solution Overview
Problem
Conventional percutaneous delivery methods, such as needle insertion, pose an infection risk due to breaches in the skin barrier, and chemical antimicrobial approaches have diminishing effects over time, requiring repeated applications.
Innovation Solution
An antimicrobial light dressing device that uses a circumferential body with LEDs to provide 360-degree antimicrobial illumination around the percutaneous insertion site, preventing pathogen infiltration through the emission of therapeutic light, including visible light and far UVC light, while allowing unobstructed passage of medicinal vessels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical antimicrobial substances are applied around the insertion point, then infection risk is reduced, but the effect diminishes over time requiring repeated applications
Solution Approach 1:
The patent replaces chemical antimicrobial substances with a light-based system (LEDs emitting blue light and far-UVC light) to achieve antimicrobial effect. This substitution eliminates the need for repeated chemical applications while maintaining sustained infection prevention through continuous illumination of the treatment region.
Solution Approach 2:
The patent changes the approach from chemical concentration maintenance to optical parameter control (light wavelength, intensity, and duration). By using specific wavelengths (blue light and far-UVC) and controlling illumination parameters, the system achieves sustained antimicrobial effect without the diminishing returns characteristic of chemical applications.
2Reliability
If a circumferential body with LEDs is used to provide 360-degree illumination, then antimicrobial coverage is improved, but device complexity increases
Solution Approach 1:
The patent segments the illumination function into multiple LED sources arranged circumferentially around the insertion site. Each LED module can be independently positioned to emit light toward the treatment region, achieving comprehensive 360-degree coverage while allowing modular construction that manages device complexity.
Solution Approach 2:
The patent transitions from a single-point or linear light source to a three-dimensional circumferential arrangement of LEDs. This spatial distribution around the insertion site provides omnidirectional illumination coverage, ensuring all surfaces around the percutaneous access are treated while maintaining a relatively simple overall device structure.
3Illumination intensity
If the medicinal vessel contacts the skin surface, then light transmission to the insertion site is blocked, but vessel stability is compromised when offset
Solution Approach 1:
The patent introduces an articulated protrusion as an intermediary structure between the medicinal vessel and the circumferential body. This protrusion elevates the vessel above the skin surface, preventing it from blocking light transmission to the insertion site while maintaining vessel stability through mechanical support and proper positioning.
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 antimicrobial light dressing device effectively reduces the risk of infection by maintaining a sterile environment around the insertion site, providing sustained protection without the need for repeated applications, thereby enhancing the safety and efficacy of percutaneous medical procedures.
Implementation Method 1
an arrangement of LEDs around the body that focus the light around the insertion and onto a therapeutic region of the insertion
Implementation Method 2
emission of therapeutic light, including visible light and far UVC light
Data Source
AI summary
An antimicrobial light dressing device, system and method for a percutaneous treatment that bathes a treatment region around the percutaneous insertion with an antibacterial illumination source for preventing pathogens around the insertion from entering via the dermal puncture created by the insertion. The antimicrobial light dressing device combines a circumferential body centered around the insertion, and an arrangement of LEDs around the body that focus the light around the insertion and onto a therapeutic region of the insertion. An opening in the circumferential body has an articulated protrusion for offsetting a medicinal vessel such as an IV tube off the skin surface to avoid blocking light to an area under the vessel.