Liposome Particle Diameter Control via Optical Transmittance Monitoring
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Solution Overview
Problem
Current liposome production methods lack real-time monitoring of particle diameter during the manufacturing process, leading to potential deviations in desired particle size and increased risk of contamination due to the need for sampling, which breaks sterile conditions.
Innovation Solution
A system utilizing a laser beam to measure the transmittance of liposome solutions in a closed circuit, allowing for in-line monitoring of particle diameter and size distribution without contact, ensuring sterile conditions and accurate particle size regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sampling is performed to measure particle diameter during manufacturing, then particle size control is improved, but sterile conditions are compromised and contamination risk increases
Solution Approach 1:
The patent replaces mechanical sampling operations with an optical measurement system. A laser beam passes through the liposome solution in the closed circuit, and light scattering properties are used to determine particle diameter and size distribution without physical contact or sampling, thus maintaining sterile conditions while achieving precise particle size control
Solution Approach 2:
The patent introduces light as an intermediary to transfer information about particle size without direct contact. The laser beam interacts with the liposomes in the solution, and the scattered light provides measurement data while the closed circuit prevents contamination
2Manufacturing precision
If multiple particle diameter regulating steps are performed, then particle size precision is improved, but production time increases
Solution Approach 1:
The patent implements real-time feedback measurement during the particle diameter regulating step. The optical measurement system continuously monitors particle size as the extrusion process occurs, allowing immediate assessment of whether the desired particle diameter has been achieved, thereby eliminating the need for multiple repeated regulating steps and reducing overall production time
Solution Approach 2:
The patent enables continuous measurement and monitoring during the particle diameter regulation process. The laser measurement system operates continuously as the liposome solution flows through the closed circuit, providing ongoing feedback without interrupting the manufacturing process, thus maintaining precision while minimizing time loss
3Reliability
If real-time monitoring is implemented, then quality control is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical sampling and measurement systems with a simplified optical measurement system. The laser beam and light detection apparatus provide real-time particle size monitoring with fewer moving parts and simpler operation, achieving reliable quality control while reducing overall system complexity
Solution Approach 2:
The patent enables the system to self-monitor and self-assess particle size during manufacturing. The optical measurement system automatically detects particle diameter and size distribution without requiring manual intervention or complex external measurement equipment, thereby improving quality control while keeping the system relatively simple
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
Enables real-time monitoring and accurate control of liposome particle diameter and size distribution within sterile conditions, reducing production time and minimizing contamination risks while ensuring high-quality liposome production.
Implementation Method 1
A system utilizing a laser beam to measure the transmittance of liposome solutions
Data Source
AI summary
Disclosed herein are an apparatus for producing liposomes and a method of producing liposomes by which it is made possible to produce liposomes under sterile conditions during the manufacturing process while monitoring in line the particle diameter of liposomes. The apparatus for producing liposomes includes a unit for regulating the particle diameter of liposomes, a supply flow channel for supplying the particle diameter regulating unit with a solution under processing containing a liposome-forming lipid, and a discharge flow channel for discharging from the particle diameter regulating unit a solution under processing containing liposomes, the supply flow channel having an input port through which the solution under processing containing the liposome-forming lipid is put into the supply flow channel, wherein the discharge flow channel has a first light transmitting part at least a portion of which is made of material transparent to light, and also has at least a first light transmittance measuring unit which measures the light transmittance of the solution under processing containing liposomes by directing light to the first light-transmitting part from the outside of the first light-transmitting part. A method of producing liposomes by use of the apparatus.