Cell Culture Gas Transfer Interfaces for Oxygen Control

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Solution Overview

Problem

Existing cell culture systems face limitations in controlling gas concentrations and gradients, leading to inefficiencies in oxygen availability and waste accumulation, which can hinder cell growth and require labor-intensive manual monitoring.

Innovation Solution

A programmable cell culture system (PCCS) with gas transfer interfaces (GTIs) and a plenum structure that allows for controlled gas concentration and temperature management, reducing oxygen gradients and enabling scalable, automated cell culture environments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual media exchange is used to replenish reactants and expel wastes, then cell culture can be maintained, but labor requirements increase and operational efficiency decreases

Engineering Contradiction:

Improvecell culture maintenance efficiencyVSAvoidlabor requirement

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The system enables self-service operation through automated media exchange. The bioreactor automatically replenishes reactants and expels wastes without manual intervention, using integrated sensors and fluid handling systems to maintain cell culture conditions autonomously

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Manual mechanical media exchange operations are replaced by an automated control system that uses electronic sensors, pumps, and valves to perform media replenishment and waste removal, substituting human labor with an integrated automated mechanism

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If standard incubators are used to control temperature and CO2, then cell culture environment can be maintained, but device complexity and space requirements increase

Engineering Contradiction:

Improveenvironmental controlVSAvoidincubator structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system merges temperature control, CO2 control, and oxygen control functions into a single integrated bioreactor unit with a unified control system, eliminating the need for separate incubators and reducing overall system complexity while maintaining reliable environmental control

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The bioreactor is designed as a multi-functional device that simultaneously performs cell culture, environmental control (temperature, CO2, O2), media exchange, and data monitoring, allowing one device to replace multiple specialized equipment

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Quantity of substance

If oxygen is replaced from ambient air in flasks, then cell culture can proceed, but oxygen concentration control precision is insufficient

Engineering Contradiction:

Improveoxygen availabilityVSAvoidoxygen concentration control

Core Design Contradiction:

Quantity of substanceVSMeasurement precision

Solution Approach 1:

The system uses dissolved oxygen sensors to continuously monitor oxygen levels in the bioreactor and implements feedback control by adjusting gas flow rates and compositions to maintain precise oxygen concentrations, enabling accurate control that manual flask operations cannot achieve

Inventive Principle:

Principle #23Feedback

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 PCCS effectively controls gas concentrations and temperatures, reducing labor requirements and enabling large-scale adherent cell growth with precise environmental control, while minimizing space and allowing for real-time parameter adjustments.

Implementation Method 1

Each GTI, for example, may include a gas permeable membrane (GPM) and a plenum. The GPM may be disposed between the plenum and the NCM.

Methodology Applied

Scientific EffectGas permeation: Permeation

Implementation Method 2

Various embodiments may advantageously selectively control a concentration of at least one target gas in the NCM by maintaining predetermined boundary conditions of the cell growth surface via the GTIs.

Methodology Applied

Scientific EffectDiffusion: Diffusion

Data Source

PatentUS12460166B2Cell culture system with controlled gas transfer boundary conditions

Publication Date: 2025.11.04 NEXTERN INNOVATION LLC

AI summary

Apparatus and associated methods relate to cell culture systems having controlled gas concentration boundary conditions around cell culture. In an illustrative example, a programmable cell culture system (PCCS) may include one or more manifolds, each releasably coupled to multiple cell culture modules. The cell culture modules, for example, may include a nutrient capacitive medium (NCM) in fluid communication with a concentration-controlled gas source through at least two gas transfer interfaces. The gas transfer interfaces (GTIs) may, for example, be spatially distributed in relation to a cell growth surface in the NCM. Each GTI, for example, may include a gas permeable membrane (GPM) and a plenum. The GPM may be disposed between the plenum and the NCM. Various embodiments may advantageously selectively control a concentration of at least one target gas in the NCM by maintaining predetermined boundary conditions of the cell growth surface via the GTIs.