Singlet Oxygen Device for Periodontal Pathogen Eradication
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Solution Overview
Problem
Current methods for treating periodontal infections, such as Scaling and Root Planing, face challenges with bacterial resistance and recurrent infections, especially in deep periodontal pockets, requiring multiple visits and lacking selectivity and persistence in pathogen destruction.
Innovation Solution
A device generating singlet oxygen using a superhydrophobic membrane with a sensitizer that converts triplet oxygen to singlet oxygen upon light exposure, allowing for precise bacterial destruction in deep pockets while minimizing damage to surrounding tissue, combined with photobiomodulation for healing and inflammation relief.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional treatment methods like Scaling and Root Planing are used, then periodontal infections can be treated, but bacterial resistance develops and infections recur requiring multiple visits
Solution Approach 1:
The patent replaces mechanical cleaning methods (scaling and root planing) with a photodynamic therapy system that uses light activation of a sensitizer to generate singlet oxygen. This optical-chemical system provides more effective and persistent pathogen destruction without mechanical limitations, enabling single-visit treatment completion.
Solution Approach 2:
The invention changes the fundamental mechanism from mechanical removal to photochemical oxidation by adjusting parameters such as light wavelength, sensitizer concentration, and oxygen delivery. This parameter transformation enables sustained singlet oxygen generation that persists throughout the treatment period, preventing bacterial regrowth and recurrence.
2Reliability
If treatment agents are used to destroy pathogens, then bacterial killing is achieved, but surrounding tissue is inappropriately destroyed due to lack of selectivity
Solution Approach 1:
The patent introduces a sensitizer as an intermediary substance that selectively localizes to periodontal pathogens. When activated by light, the sensitizer generates singlet oxygen only at the pathogen location, creating a targeted destruction mechanism that spares surrounding healthy tissue from both the sensitizer and reactive oxygen species.
Solution Approach 2:
The invention creates localized treatment zones where the sensitizer is concentrated at pathogen sites through selective accumulation. The light activation and singlet oxygen generation are confined to these local regions, providing spatially selective pathogen destruction while maintaining tissue integrity in adjacent areas.
3Reliability
If treatment agents are used to destroy pathogens, then bacterial killing is achieved, but pathogens develop resistance to the agent due to persistence
Solution Approach 1:
The patent utilizes the phase transition of oxygen from triplet ground state to excited singlet state through light-mediated energy transfer. This phase transition creates a highly reactive form of oxygen that rapidly destroys bacterial cell structures and DNA, acting faster than bacteria can develop resistance mechanisms, and the effect persists as long as light and oxygen are supplied.
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 device enables effective eradication of bacterial biofilms in deep periodontal pockets during a single visit, reducing recurrence and enhancing tissue penetration of singlet oxygen, with the potential for broader applications in tumor eradication and bacterial killing in stagnating wounds.
Implementation Method 1
a sensitizer that converts triplet oxygen to singlet oxygen upon exposure to light
Implementation Method 2
a superhydrophobic membrane having a hydrophobic sensitizer, the superhydrophobic membrane having a surface with a water contact angle of at least 140°
Implementation Method 3
a thermally conductive substrate in direct contact with the light source configured to conduct heat away from the light source
Data Source
AI summary
A device for generating singlet oxygen is provided. The device has a sensitizer that converts triplet oxygen to singlet oxygen upon exposure to light. The device is configured to keep the sensitizer from contacting external fluids.