Semi-Automatic Adjustable-Dose Syringe With Nested Wear Control
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Solution Overview
Problem
Existing syringes in livestock vaccination suffer from rapid wear and tear, leading to a short service life and potential hazards due to stress reactions in animals and medical personnel, with current designs failing to address ergonomic concerns and efficient operation.
Innovation Solution
A semi-automatic adjustable-dose syringe featuring a unique structure with components like a syringe cylinder, adjustment cylinder, piston sleeve rod, T-shaped piston adjustment rod, and needle break-proof buffer cap, designed for ergonomic efficiency and reduced wear, incorporating features such as a one-way valve and elastic clamping mechanisms to facilitate safe and efficient vaccination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If existing syringe structures are used, then the syringe can perform basic injection function, but the components wear rapidly leading to short service life
Solution Approach 1:
The syringe is divided into multiple functional components: syringe cylinder, adjustment cylinder, piston sleeve rod, T-shaped piston adjustment rod, and buffer cap. Each component has a specific function, allowing for reduced wear in critical areas and easier replacement of worn parts while maintaining overall system reliability.
Solution Approach 2:
The adjustment cylinder is housed within the outer pull cap, the piston sleeve rod is housed within the outer pull cap and extends into the syringe cylinder, and the T-shaped piston adjustment rod is housed within the syringe cylinder. This nested arrangement reduces the number of external connections and potential wear points between components.
2Productivity
If manual operation is used for vaccination, then operation simplicity is maintained, but labor intensity and energy consumption are high
Solution Approach 1:
The syringe incorporates dynamic components including the adjustable piston mechanism with T-shaped piston adjustment rod that can be manually operated to control injection dose and speed, and the buffer cap with elastic clamping mechanism that dynamically adjusts to needle insertion forces. This allows manual operation with improved efficiency and reduced labor intensity.
Solution Approach 2:
The elastic clamping mechanism in the buffer cap automatically adjusts to the inserted needle size without manual adjustment, and the piston mechanism can be easily actuated by manual pressure. The system serves itself by providing automatic needle retention and dose control through simple manual actions, reducing the need for complex external controls.
3Ease of operation
If standard syringe design is used, then manufacturing simplicity is maintained, but ergonomic design requirements are not met
Solution Approach 1:
The syringe features asymmetric design elements including the T-shaped piston adjustment rod with asymmetric arms for manual operation, the offset positioning of the buffer cap relative to the syringe cylinder, and the asymmetric clamping mechanism in the buffer cap. These asymmetric features improve ergonomic performance by matching natural hand movements and reducing operator fatigue.
Solution Approach 2:
The T-shaped piston adjustment rod introduces a dimensional change by providing rotational and translational movement capabilities in addition to linear piston movement. The buffer cap adds a third dimension of movement for needle insertion and retraction. This multi-dimensional operation improves ergonomic efficiency by allowing more natural hand movements.
4Reliability
If needle insertion is performed manually, then operational simplicity is maintained, but needle breakage risk increases
Solution Approach 1:
The buffer cap is positioned beforehand to provide cushioning and protection during needle insertion. The elastic clamping mechanism is pre-configured to automatically engage with the needle, providing continuous support and reducing the risk of needle breakage during the insertion process.
Solution Approach 2:
The buffer cap acts as an intermediary between the needle and the syringe body. It provides a protected environment for needle insertion and retention, mediating the interaction between the needle and other components to prevent direct contact and potential breakage.
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 syringe prolongs service life, reduces component wear, minimizes physical harm to animals and personnel, and enhances vaccination efficiency, ensuring safe and labor-saving operations with reduced energy consumption.
Implementation Method 1
a first spring, one end of the first spring is adhered to the left end of the interior of the outer pull cap, and the other end of the first spring penetrates through the through hole on the adjustment cylinder and is adhered to an outer side face of a left end of the syringe cylinder
Implementation Method 2
an outer side face of the left end of the outer pull cap is movably connected to an inner side face of a left end of the needle break-proof buffer cap through the second springs
Implementation Method 3
an exterior of a left side of the syringe cylinder is threadedly connected to the adjustment cylinder through mutual engagement
Implementation Method 4
a one-way valve suction connector is internally housed within a liquid inlet on the threaded connector, used for facilitating connection between the one-way valve suction connector and a liquid storage device through a hose, causing liquid to transfer into the syringe through the one-way valve suction connector
Data Source
AI summary
Disclosed is a semi-automatic adjustable-dose syringe, including a syringe cylinder, an adjustment cylinder, a piston sleeve rod, a T-shaped piston adjustment rod, a first spring, an outer pull cap, second springs and a needle break-proof buffer cap. An exterior of a left side of the syringe cylinder is threadedly connected to the adjustment cylinder through mutual engagement; and the adjustment cylinder is internally housed within the outer pull cap, with a sliding connection between an outer wall of the adjustment cylinder and an inner wall of the outer pull cap. The present disclosure can prolong the service life of the syringe by changing and adjusting structures and component combinations of the syringe itself, which effectively reduces wear and waste of components, ensures safe operation and saves time and labor, significantly minimizing physical harm and energy consumption of epidemic prevention personnel.