Microwave Animal Stunning Apparatus with Auto-Tuner
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Solution Overview
Problem
Current methods for animal stunning, such as microwave radiation, often result in irreversible damage and are not compliant with religious slaughter rituals that require the animal to remain alive and unharmed, posing challenges for humane and ritualistic slaughter processes.
Innovation Solution
A method and apparatus using microwave radiation to heat the frontal portion of an animal's brain to induce reversible unconsciousness, with a system that includes an applicator, waveguide, and auto-tuner to control impedance matching and power transfer, ensuring the animal can regain consciousness without significant brain function loss, and is designed to meet the requirements of reversible stunning for humane and ritualistic slaughter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If microwave radiation is applied to heat the brain to induce stunning, then unconsciousness and insensibility are achieved, but irreversible damage and tissue cooking occur
Solution Approach 1:
The patent applies microwave energy locally to specific regions of the brain (frontal lobe and temporal lobe) rather than heating the entire brain uniformly. The applicator is positioned to target the frontal lobe through the eye socket, and additional applicators may target the temporal lobe, creating localized heating zones that induce stunning without causing widespread tissue damage
Solution Approach 2:
The patent applies microwave energy at controlled power levels and durations that are sufficient to induce stunning (unconsciousness and insensibility) but deliberately limited to prevent excessive heating that would cause irreversible tissue damage. The system monitors and controls the total energy delivered to achieve the minimum effective dose
2Productivity
If irreversible stunning is applied, then slaughter processing is facilitated, but religious slaughter requirements are not met
Solution Approach 1:
The patent provides a dynamic system where the microwave application parameters (power, duration, frequency) can be adjusted and controlled to achieve different outcomes. The system can be configured for irreversible stunning when permitted, or for reversible stunning when religious requirements apply, allowing the same apparatus to adapt to different slaughter protocols and regulatory requirements
3Reliability
If microwave energy is applied from the side of the skull, then stunning is achieved, but surrounding tissue damage occurs
Solution Approach 1:
The patent uses the eye socket (orbit) as an intermediary pathway to deliver microwave energy to the frontal lobe of the brain. The applicator is positioned within or near the eye socket, using the natural anatomical structure as a window to reach the target tissue without penetrating the skull or damaging surrounding areas. This intermediary approach provides a natural coupling path for microwave energy
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 solution enables rapid and controlled induction of unconsciousness and insensibility in animals, ensuring compliance with religious slaughter criteria and improving animal welfare by allowing the animal to regain consciousness, thus enhancing humane handling and processing while maintaining meat quality.
Implementation Method 1
generating microwave radiation of a suitable power level and frequency and directing that radiation through a waveguide to and through the applicator
Implementation Method 2
the emerging microwave radiation passes to the head and to the frontal portion of the brain of the subject animal... to raise the temperature of the frontal portion of the brain
Data Source
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AI summary
Disclosed are an animal stunning apparatus and method for inducing rapid unconsciousness and insensibility. The apparatus includes a stunning station (10) in which a live subject animal is located in a confined position and an applicator (60) contacts an application point (51) on the live subject animal's head (50) immediately overlying a frontal portion of the animal's brain and couples microwave radiation to the head, A microwave generator (75) generates microwave energy of a suitable power level and frequency, and a waveguide (76) directs the microwave radiation to the applicator (60). An auto-tuner (90) in the waveguide uses a directional coupler (91) to detect forward and reflected power and to tune in real time the impedance for matching the load and optimising effective power transfer. A switch (78) discontinues the application of microwave radiation which is heating of the frontal portion of the brain after a period of time sufficient to have raised the temperature of the frontal portion of the brain of the subject animal to thereby induce the unconsciousness and insensibility. Effective measures for optimising the microwave absorption include special constructions of the applicator (63, 66) and sensor switches (67), (68) to minimise microwave leakage. The period can be sufficient only to rapidly induce insensibility, and is insufficient for the insensibility induced to be irreversible, and insufficient to cause significant heating of deeper brain tissues and including the brain stem.