Nitric Oxide Quantification via Chemiluminescence Detection
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Solution Overview
Problem
Current methods for administering nitric oxide (NO) are cumbersome and lack efficient methods for characterizing NO release from NO-releasing materials, which is crucial for ensuring safe and effective therapeutic levels, particularly for commercialization and regulatory compliance.
Innovation Solution
A system and method for measuring NO release involve introducing a carrier gas into a sample holding chamber with an NO-releasing material, using a NO collection device that includes a sample holding chamber, carrier gas inlets, and an NO outlet, directing the gas mixture to a NO detector for quantification, and controlling environmental factors like oxygen content to ensure accurate NO measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous gas administration systems are used to deliver nitric oxide, then therapeutic effectiveness is maintained, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent extracts the nitric oxide generation function from complex continuous gas administration systems by using isolated NO-releasing materials (such as coatings or implants) that can be applied directly to medical devices. This eliminates the need for continuous gas delivery infrastructure while maintaining therapeutic NO levels at the target site.
Solution Approach 2:
The NO-releasing materials are designed to autonomously generate and release nitric oxide at controlled rates without requiring external gas supply systems, flow controllers, or continuous monitoring equipment. The material self-regulates NO release based on local conditions, simplifying the overall system while maintaining therapeutic effectiveness.
2Difficulty of detecting and measuring
If conventional NO measurement methods are used, then basic detection is achieved, but measurement precision and characterization accuracy deteriorate
Solution Approach 1:
The patent replaces conventional mechanical measurement approaches with chemiluminescence detection technology, which uses chemical reactions that emit light when nitric oxide reacts with ozone. This optical detection method provides significantly higher sensitivity and precision (detecting parts per billion levels) compared to traditional mechanical or electrochemical sensors.
Solution Approach 2:
The measurement system transforms the detection parameter from direct concentration measurement to light intensity measurement through chemiluminescence. By converting NO concentration into optical signal intensity, the system achieves superior measurement precision and enables detailed characterization of NO release kinetics that conventional methods cannot provide.
3Productivity
If high levels of nitric oxide are administered, then antimicrobial and wound healing effects are enhanced, but harmful factors and tissue toxicity increase
Solution Approach 1:
The patent applies nitric oxide-releasing materials locally to specific medical devices or wound sites rather than systemic administration. This creates high local NO concentrations for therapeutic effect while limiting systemic exposure and avoiding tissue toxicity. The localized application ensures the beneficial effects are concentrated where needed without overwhelming the body with excessive NO.
Solution Approach 2:
The NO-releasing materials are designed with dynamic release characteristics that adapt to local conditions. The release rate can be influenced by factors such as pH, oxygen tension, or enzymatic activity at the application site, allowing the system to provide high NO levels when needed (such as in infected or hypoxic tissues) while automatically reducing release in healthy tissues, thereby avoiding toxicity.
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 approach allows for precise characterization of NO release, ensuring non-toxic yet therapeutically effective levels of NO, facilitating regulatory compliance and quality control, and enabling the development of NO-releasing products without the need for continuous gas administration systems.
Implementation Method 1
The NO detector is a chemiluminescence detector, and thus, the NO can be quantified by a chemiluminescence measurement.
Data Source
AI summary
The present disclosure relates to methods, devices, and systems for measuring nitric oxide released from a material. For example, a method of measuring nitric oxide release from a material can include introducing a continuous flow of a carrier gas into a sample holding chamber via a carrier gas inlet at an effective flow rate, introducing an amount of the nitric oxide releasing material into the sample holding chamber via a separate sample inlet to contact the continuous flow of the carrier gas, directing the carrier gas and released nitric oxide out of the sample holding chamber via a nitric oxide outlet toward a nitric oxide detector, and quantifying an amount of released nitric oxide using the nitric oxide detector.