Powered Injection Device Pneumatic Actuator Ergonomics
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Solution Overview
Problem
Existing manual syringes used for vaccinating avian animals are non-ergonomically friendly, leading to user fatigue and inefficient vaccination processes, making them cumbersome and prone to errors.
Innovation Solution
A powered injection device with a pneumatic, electric, or hydraulic power source, featuring two injectors and interchangeable pistons for varying dosage volumes, designed to reduce user fatigue and improve injection efficiency by enabling rapid subcutaneous and intramuscular injections with ergonomic design and precise dosing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual syringes are used for vaccination, then the device structure is simple, but user fatigue increases and injection efficiency decreases
Solution Approach 1:
The patent replaces the manual mechanical operation of syringes with an automated pneumatic system. A pneumatic cylinder with piston automatically performs the injection action when the trigger is pulled, eliminating the need for manual pushing and significantly reducing user fatigue while increasing injection speed and efficiency.
Solution Approach 2:
The device enables self-service operation where the pneumatic system automatically performs the injection function once activated. The operator simply needs to pull the trigger, and the system autonomously completes the injection process without requiring continuous manual effort, thereby improving productivity and reducing operational fatigue.
2Force
If pneumatic cylinders are placed at the rear of syringe pistons, then the injection force is sufficient, but the device becomes heavy and too large
Solution Approach 1:
The patent repositions the pneumatic cylinder from the traditional rear position to the front position above the injectors. This spatial reconfiguration changes the dimensional arrangement of components, allowing the center of gravity to be optimized for better ergonomics while maintaining sufficient injection force through the pneumatic piston mechanism.
Solution Approach 2:
The device employs asymmetric component layout with the pneumatic cylinder positioned at the front rather than symmetrically at the rear. This asymmetric arrangement optimizes the center of gravity and overall device balance, making the device more ergonomic and easier to handle while maintaining effective injection capability.
3Productivity
If multiple liquid formulations are injected simultaneously, then vaccination coverage is improved, but the device complexity increases
Solution Approach 1:
The device is divided into multiple independent injector units, each capable of holding and injecting a different liquid formulation. Each injector has its own piston and needle assembly, allowing simultaneous injection of multiple vaccines through separate needles or combined delivery, thereby improving vaccination coverage while maintaining manageable complexity through modular design.
Solution Approach 2:
The device is designed with multi-functionality to handle multiple liquid formulations simultaneously. The universal pneumatic power source drives multiple injectors that can be configured for different vaccines, allowing the single device to perform multiple vaccination functions at once, improving productivity without proportionally increasing complexity.
4Adaptability or versatility
If interchangeable pistons are used for different dosage volumes, then dosing flexibility is improved, but the device complexity increases
Solution Approach 1:
The device incorporates dynamic interchangeability of pistons, allowing users to change piston sizes based on the required dosage volume. Different sized pistons can be easily swapped into the injector cylinders, enabling flexible dosing adjustments. This dynamic adaptability improves versatility while the standardized interface keeps the added complexity minimal.
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 provides a compact, ergonomic, and precise method for delivering multiple liquid formulations, including vaccines, reducing user fatigue and improving injection quality by allowing for consistent and controlled delivery of different dosage volumes with minimal operator effort.
Implementation Method 1
The power source may be, for example, pneumatic, electric or hydraulic... The pneumatic cylinder (50) may be any known to those of skill in the art... During an injection cycle, air flows into the injection device (1) through orifice (8) of connecting means (21)
Data Source
AI summary
The invention relates to hand-held, powered injection devices, for administering fluids, including vaccines, to animals. The invention further relates to methods of use of the powered injection device for vaccinating avian animals. Powered injection devices according to the instant disclosure are ergonomically friendly, and offer rapid and consistent dosing, particularly for avian animals.