Animal Test Substance Administration via Respiratory Phase Triggering
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Solution Overview
Problem
Administering a test substance uniformly and reliably into the nasal cavity or lung of experimental animals for precise evaluation of pharmaceutical effects and side effects is challenging due to uneven distribution and erratic breathing caused by stress, especially when the administration timing must align with the animal's respiratory state.
Innovation Solution
A test substance administration system that includes a respiration monitoring device to detect the transition from the expiratory to inspiratory phase and outputs a trigger signal, synchronizing the administration of a predetermined amount of the substance using a pressurized air spray device, ensuring uniform distribution during inhalation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the animal is constrained for a long time to carry out the experiment, then the test substance can be administered, but breathing becomes erratic due to stress leading to uneven distribution
Solution Approach 1:
The respiration monitoring device continuously monitors the animal's breathing state and provides feedback signals to the administration device. The system detects respiratory phase (inspiration/expiration) and adjusts the timing of test substance administration accordingly, ensuring synchronization with the animal's natural breathing cycle despite constraint stress.
Solution Approach 2:
The administration system transitions from static timing to dynamic adaptation by continuously monitoring respiration patterns. The administration timing is adjusted in real-time based on detected respiratory phase, allowing the system to adapt to changes in breathing stability caused by animal stress.
2Ease of operation
If the test substance is administered without synchronizing with respiratory timing, then administration is simple, but the substance scatters to other locations and does not distribute uniformly
Solution Approach 1:
The respiration monitoring device provides real-time feedback on respiratory phase to the administration device. This feedback mechanism enables automatic synchronization of administration timing with inspiration phase, ensuring uniform distribution without requiring manual timing coordination.
Solution Approach 2:
The system replaces manual timing coordination with an automated electronic control system. The respiration monitoring device detects breathing phase and triggers administration automatically, substituting mechanical/smanual timing methods with sensor-based electronic synchronization.
3Productivity
If the test substance is administered at incorrect timing, then administration is quick, but the necessary amount does not reach the nasal cavity or lung
Solution Approach 1:
The respiration monitoring device continuously monitors and detects the respiratory phase in advance before administration is needed. By identifying the inspiration phase beforehand, the system can trigger administration at the optimal moment, ensuring the test substance reaches the target during the inhalation window.
Solution Approach 2:
The system uses real-time feedback from the respiration monitoring device to determine the precise moment for administration. The trigger signal is generated based on detected respiratory phase, ensuring synchronization with inspiration and reliable delivery of the necessary dosage.
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 system ensures reliable and uniform administration of the test substance into the nasal cavity or lung by synchronizing the administration with the animal's respiratory cycle, enhancing the accuracy of pharmaceutical effect and side effect evaluation.
Implementation Method 1
a respiration pick-up device (1) for detecting a respiration state
Implementation Method 2
an application device (3) for spraying a predetermined amount of a test substance into a nasal cavity or into an oral cavity
Data Source
AI summary
[Subject]A test substance application system for animal experiment capable of administering a required amount of a test substance uniformly and reliably from a nose or a mouth into a nasal cavity or into a lung of an experimental animal is provided.[Means for Solution]The system includes a respiration monitoring device 2 that monitors a respiration state of an experimental animal detected by a respiration pick-up device 1 to thereby measure a timing upon switching from an expiratory phase to an inhalatory phase and outputs a trigger signal T at that timing, and an application device 3 that sprays a predetermined amount of a test substance into a nasal cavity or an oral cavity of the experimental animal when the trigger signal T is outputted from the device 2.