Automated Organ Bioreactor With Pressure-Feedback Decellularization
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Solution Overview
Problem
The limited availability of donor organs for lung transplantation and the challenges of immunosuppression and chronic rejection in clinical lung transplantation are addressed by developing an automated bioreactor system for decellularizing organs, which reduces human intervention and enhances the consistency and sterility of the decellularization process.
Innovation Solution
An automated bioreactor system with a main chamber, reagent and perfusion conduits, pumps, and a control system that automates the decellularization protocol, minimizing human interaction and ensuring sterility and consistency in the decellularization process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual decellularization protocols are used, then flexibility in handling complex organ structures is maintained, but contamination risk increases and consistency of the final product decreases
Solution Approach 1:
The system enables automated self-execution of the decellularization protocol through computer-controlled pumps and valves that automatically perform perfusion cycles, reagent exchange, and pressure monitoring without requiring manual intervention during the critical decellularization process, thereby eliminating contamination risk from human contact while maintaining consistent results
Solution Approach 2:
Manual mechanical operations are replaced with an automated computer-controlled system that uses electronic signals to regulate fluid flow, pressure, and timing parameters, ensuring precise and repeatable execution of the decellularization protocol with higher reliability and reduced contamination
2Productivity
If manual intervention is used during decellularization, then real-time adjustments can be made, but the process time and resource consumption increase
Solution Approach 1:
The automated system maintains continuous perfusion and monitoring throughout the decellularization process without interruption for manual intervention, ensuring that reagents are continuously circulated at optimal flow rates and that the organ is constantly exposed to the decellularization solution, thereby reducing total process time while maintaining effectiveness
Solution Approach 2:
The system incorporates sensors that continuously monitor pressure, flow rate, and other parameters, providing real-time feedback to the control system that automatically adjusts pump speeds, valve positions, and reagent delivery rates to maintain optimal conditions throughout the process, eliminating the need for manual monitoring and adjustment time
3Reliability
If automated system is implemented, then sterility and consistency are improved, but device complexity increases
Solution Approach 1:
The system is divided into separate functional modules including reagent storage chambers, perfusion pumps, pressure sensors, control electronics, and waste disposal systems, each independently designed and controllable, which simplifies the overall architecture while maintaining automated sterility through modular sterile barriers between components
Solution Approach 2:
A computer control system acts as an intermediary that coordinates all system components through standardized interfaces, managing the complexity of multiple pumps, valves, and sensors through software protocols while maintaining sterile boundaries between the automated system and the external environment
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 automated system increases the likelihood of obtaining a viable and structurally sound decellularized organ by reducing contamination risks and improving the efficiency and consistency of the decellularization process.
Implementation Method 1
At least one perfusion pump is configured to drive the flow of the liquid phase reagent through the at least one perfusion conduit
Implementation Method 2
At least one perfusion pressure sensor detects a pressure of the liquid phase reagent flowing through the at least one perfusion conduit
Implementation Method 3
A control system receives an input representative of a desired pressure of the liquid phase reagent flowing through the at least one perfusion conduit, receives an input of the pressure detected by the at least one perfusion pressure sensor, and outputs a signal to control the at least one perfusion pump
Data Source
AI summary
An automated bioreactor system for decellularizing an organ includes a main chamber for containing the organ. The system further includes a reagent chamber containing a liquid phase reagent. A reagent conduit delivers the liquid phase reagent to the main chamber, and a perfusion conduit delivers the reagent from the reagent outlet in the main chamber into the organ. A perfusion pump drives the flow of the reagent. A perfusion pressure sensor detects a pressure of the flowing reagent. A control system controls the perfusion pump to drive the flow of the reagent based on a received input representative of a desired pressure and a received input of the detected pressure. The control system may automatically perform all of the steps of a decellularization protocol based on sensor input. An automated waste decontamination system may also be provided.