Adjustable Syringe Piston Stroke via Detachable Guide Groove
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Solution Overview
Problem
Existing syringes lack the ability to easily adjust different injection quantities, making it difficult to administer medications to multiple animals with varying dosage requirements, especially in challenging operating conditions.
Innovation Solution
A syringe design featuring a guide groove for a resilient pressure piece that allows for simple adjustment of the piston rod stroke, with adjustable locking positions to ensure accurate dosing, and a detachable cannula for convenient fluid administration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the syringe has a fixed piston rod stroke, then the structure is simple, but the injection quantity cannot be adjusted for different animals
Solution Approach 1:
The syringe implements dynamic adjustability by allowing the piston rod stroke to be changed between different fixed positions. The adjustment element can be set to different locations along the guide groove, enabling the maximum stroke to be adapted to different injection quantities while maintaining structural simplicity through discrete positioning options.
2Adaptability or versatility
If the piston rod stroke is adjustable, then different injection quantities can be set, but incorrect settings may occur in difficult operating conditions
Solution Approach 1:
The syringe incorporates a feedback mechanism through the guide groove and adjustment element design. The guide groove provides tactile feedback and physical guidance for the adjustment element, ensuring that only specific predetermined positions can be selected. This prevents incorrect settings by allowing the adjustment element to engage only at valid positions along the groove.
Solution Approach 2:
The guide groove is segmented into discrete positions corresponding to different injection quantities. The adjustment element can only be positioned at these predetermined locations, dividing the continuous adjustment range into manageable segments that reduce the risk of incorrect settings while maintaining ease of use.
3Adaptability or versatility
If the front stop is positioned far from the ejection-side end, then the piston rod can move freely, but the maximum stroke cannot be optimized for different dosing requirements
Solution Approach 1:
The system dynamically adjusts the effective stroke length by moving the adjustable stop along the guide groove. This allows the maximum stroke to be changed between operations to match different dosing requirements, while the front stop remains fixed to maintain structural stability and ease of operation during each individual injection.
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
Enables precise and reliable adjustment of injection quantities, preventing incorrect settings and ensuring safe, repeated application of medication, even in demanding veterinary scenarios.
Implementation Method 1
a resilient pressure piece (31) which acts on the adjustment element (20) in the displacement direction (P1)
Data Source
Figure 1~3
Figure 4~5
Figure 6~10
AI summary
A syringe is provided with a base body (2) having a syringe cylinder (3) with an injection-side end (4) and a piston rod (5) whose front end section (6) is slidably arranged in the syringe cylinder (3) along a displacement direction (P1), wherein the base body (2) has a front stop (15) for the piston rod (5) at which the distance between the front end section (6) and the injection-side end (4) of the syringe cylinder (3) is minimal, wherein the syringe (1) comprises an adjusting element (20) having a rear stop (21) for the piston rod (5) at which the distance between the front end section (6) and the injection-side end (4) of the syringe cylinder (3) is maximal, wherein the adjusting element (20) is movable relative to the base body (2) and is set in at least two predetermined adjusting positions in which the position of the rear stop (21) is in the displacement direction (P1). differentdetachably connectable to the base body (2), so that by selecting one of the adjustment positions for the adjustment element (20) the maximum stroke of the piston rod (5) can be adjusted.