Multi-Chamber Inhalation System for Controlled Drug Delivery
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Solution Overview
Problem
Current substance inhalation systems for test animals face challenges in achieving predictable and consistent blood levels of drugs and alcohol, are often stressful for the animals, require large and expensive setups, and lack reproducibility across different research facilities.
Innovation Solution
A portable, stand-alone or table-top inhalation chamber system that allows for selective and uniform drug delivery to multiple chambers from a single passive drug delivery system, enabling the simultaneous testing of different drugs or substances with various delivery methods, including positive air pressure and e-vape systems, and allows for self-administration modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If large vapor chambers containing up to fifteen test subject cages are used, then predictable blood levels of drugs and alcohol can be achieved, but the system requires an entire dedicated room and has very high initial cost and operating expense
Solution Approach 1:
The patent divides the large vapor chamber system into multiple smaller, independent inhalation chambers (e.g., 2-6 chambers) that can be positioned on shelves of a housing supported on a wheeled cart. Each chamber can be independently controlled and accessed, eliminating the need for a single large dedicated room while maintaining drug delivery precision.
Solution Approach 2:
The system is designed with a single vapor delivery system that can serve multiple chambers simultaneously or independently. The housing and cart structure provide universal support for different chamber configurations, allowing the same system to accommodate various experimental setups without requiring dedicated space for each chamber.
2Ease of operation
If the entire system is opened to remove one animal, then the animal can be accessed for testing, but the balance in the system is destroyed and time is required to return to equilibrium
Solution Approach 1:
Each inhalation chamber is designed as an independently accessible unit within the housing. Animals can be removed from or added to individual chambers without opening the entire system or affecting other chambers. This segmentation allows selective access to specific animals while maintaining the integrity and equilibrium of the overall system.
3Adaptability or versatility
If individual chamber systems are built in-house with unique configurations, then custom testing can be performed, but results cannot be compared to results from other research facilities
Solution Approach 1:
The system employs standardized components and configurations that can be replicated across different research facilities. The housing, cart structure, and vapor delivery system are designed with universal interfaces and consistent parameters, allowing results from one facility to be compared with results from another while still accommodating various drug testing protocols.
4Device complexity
If a single large vapor delivery system serves multiple chambers, then cost is reduced and space is optimized, but flexibility for selective individualized testing is limited
Solution Approach 1:
The vapor delivery system is segmented into multiple independent delivery lines, each connected to individual chambers. While the systems share a common housing and cart structure for space efficiency, each chamber can receive vapor from the central system or be selectively isolated. This allows simultaneous or independent drug delivery to different chambers with different drugs or concentrations.
Solution Approach 2:
The system incorporates dynamic control capabilities where vapor delivery to each chamber can be independently activated, deactivated, or adjusted. The delivery lines include control mechanisms that allow selective drug delivery to specific chambers based on experimental requirements, providing flexibility despite the consolidated structure.
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 system provides more flexibility and control over drug delivery, reduces animal stress, and enables reproducible results across experiments, while being cost-effective and space-efficient, allowing for precise control over drug concentrations and delivery times.
Implementation Method 1
a liquid bubbling system for delivery of test vapor to the chambers
Implementation Method 2
delivery of test vapor by pressurized air
Implementation Method 3
a vacuum system connected to the test chamber which creates suction, drawing inhalable test vapor through the inhalation test chamber
Implementation Method 4
heating system for vaporization of liquid test substances
Data Source
AI summary
A stand-alone chamber or multi-chamber inhalation system has at least two alternative vaporized test liquid supply systems for passive or self-administered delivery of vaporized test fluid and air to one or more test chambers based on operator selection of delivery on and off times in a passive mode or actuation of an actuator in the chamber by a test animal in a self-administered mode. In one case, a multiple inhalation chamber system has two or more separate test fluid delivery systems and provides options for selective passive uniform drug delivery to multiple chambers or selective delivery of two or more different drugs to different groups of chambers from different delivery systems so that two different drugs or different concentrations of delivered drugs can be tested simultaneously.