Wearable Pet Device Passive Semiochemical Diffusion Control
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Solution Overview
Problem
Existing pet collars that diffuse semiochemical compositions, such as those containing ethylene-vinyl acetate, fail to fully release the composition within the specified duration, leading to ineffective pheromone release kinetics after four weeks, necessitating improved diffusion duration, quantity, and control.
Innovation Solution
A device comprising a polymer matrix with a semiochemical composition and a diffusion control agent, such as clays or zeolites, to enhance the release of semiochemicals over an extended period, ensuring a higher relative quantity and controlled release over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If semiochemical composition is impregnated in ethylene-vinyl acetate polymer, then the device can be manufactured with simple structure, but the diffusion duration is limited to four weeks with incomplete release
Solution Approach 1:
The patent changes the chemical composition parameters of the polymer matrix by incorporating copolymer esters with specific vinyl group contents (5-30% by weight) and adjusting the semiochemical concentration (0.1-20% by weight), which optimizes the diffusion rate and extends the effective duration from 4 weeks to potentially longer periods while maintaining adequate release quantities
Solution Approach 2:
The invention uses composite polymer materials consisting of copolymer esters combined with specific semiochemical compositions, creating a material system that balances retention and release properties to achieve both extended duration and sufficient quantity of semiochemical delivery
2Duration of action of moving object
If semiochemical composition is impregnated in ethylene-vinyl acetate polymer, then the device structure remains simple, but the release kinetics become uncontrolled with very low diffusion after four weeks
Solution Approach 1:
The patent systematically varies polymer composition parameters including vinyl group content (5-30% by weight) and semiochemical concentration (0.1-20% by weight) to tune the diffusion kinetics, achieving controlled release profiles that maintain effectiveness throughout the extended duration
Solution Approach 2:
The invention creates local variations in the polymer matrix properties by controlling the distribution and concentration of semiochemicals within the copolymer ester structure, enabling different regions to release at optimized rates for sustained controlled diffusion
3Quantity of substance
If higher quantity of semiochemical composition is released, then the effectiveness is improved, but the diffusion rate becomes too high and depletes the composition too quickly
Solution Approach 1:
The patent optimizes the balance between release quantity and duration by adjusting the semiochemical concentration parameter (0.1-20% by weight) and polymer composition parameters, creating a release profile that delivers adequate total quantity over an extended time period rather than rapid depletion
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 device achieves prolonged and controlled diffusion of semiochemicals, maintaining effectiveness for over a month, enhancing animal well-being by reducing stress and anxiety through consistent pheromone release.
Implementation Method 1
This semiochemical composition, impregnated within the polymer, diffuses passively into the air where it is perceived by the dog's vomeronasal organ
Implementation Method 2
a diffusion control agent for the semiochemical composition outside the device
Data Source
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AI summary
The present invention relates to portable devices for pets capable of passively diffusing semiochemical compositions; these calming devices allow animals to better manage stressful situations (separation, weaning, transport, fear of noises, fireworks, etc.) and enable them to better adapt to new situations.