Dart Syringe Projectile Side Discharge Needle Ports
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Solution Overview
Problem
Existing projectile syringes with hollow needles face issues of incomplete medication administration due to backward propulsion of the syringe and medication loss caused by air pressure during flight, leading to reduced dosage effectiveness in remote substance delivery to animals.
Innovation Solution
A syringe projectile design featuring side discharge needle ports and a firing actuator, where a needle cannula opens to side discharge ports behind the tip, and a triple-barrier plunger construction to prevent gunpowder residue mixing, ensuring effective substance delivery via a gunpowder charge propelling mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hollow needle is used to discharge medication remotely, then the syringe can deliver substances to animals from a distance, but the syringe may propel backward and out of the animal causing incomplete administration
Solution Approach 1:
The needle ports are inverted from the conventional forward-discharge design to side-discharge ports located on the sides of the needle hub, behind the needle tip. This inversion prevents the syringe from propelling backward upon impact with the animal, ensuring complete medication administration while maintaining remote delivery capability.
Solution Approach 2:
The medication discharge direction is changed from a single forward dimension to multiple side dimensions through the side discharge ports. This dimensional change distributes the discharge force laterally rather than forward, preventing backward propulsion while ensuring complete medication delivery.
2Ease of operation
If a hollow needle is used for remote delivery, then substances can be administered at a distance, but air pressure during flight can force air into the dart body and dispel medication reducing dosage
Solution Approach 1:
The needle ports are positioned behind the needle tip and oriented to discharge medication sideways rather than forward. This inverted configuration prevents air pressure during flight from forcing air into the dart body and dispelling medication, thereby preventing dosage reduction while maintaining remote delivery effectiveness.
3Reliability
If side discharge needle ports are used, then backward propulsion is prevented and complete administration is achieved, but the device complexity increases
Solution Approach 1:
The needle assembly is segmented into distinct components: a needle hub with side discharge ports, a needle tip, and a triple-barrier plunger construction. This segmentation allows each component to perform its specific function independently, achieving reliable complete medication administration while managing device complexity through modular design.
Solution Approach 2:
The side discharge ports are locally positioned on the sides of the needle hub behind the needle tip, creating a localized discharge zone. This local quality change ensures complete medication administration by preventing backward propulsion without requiring complex changes to the entire device structure.
4Manufacturing precision
If a triple-barrier plunger construction is used to prevent gunpowder residue mixing, then substance purity is maintained, but manufacturing complexity increases
Solution Approach 1:
The plunger is constructed with three distinct barriers that segment the interior space to prevent gunpowder residue from mixing with the medication. This segmentation maintains substance delivery purity while managing manufacturing complexity through a systematic multi-layer design.
Solution Approach 2:
The triple-barrier plunger construction provides localized protection at critical interfaces where gunpowder residue could contaminate the medication. This local quality enhancement ensures substance purity without requiring complex changes to the entire manufacturing process.
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
Ensures complete and controlled administration of substances with minimized medication loss, allowing for safe and efficient remote delivery of tranquilizers or medications to animals from a distance.
Implementation Method 1
a firing actuator, where a needle cannula opens to side discharge ports behind the tip, and a triple-barrier plunger construction to prevent gunpowder residue mixing, ensuring effective substance delivery via a gunpowder charge propelling mechanism
Data Source
AI summary
A dart syringe projectile includes a tubular body front and rear ends and a bore extending between said ends. A needle assembly is mounted on the body front end and a tail assembly is mounted on the body rear end. The body bore or the tail assembly receives a striker, a percussion cap positioned in front of the striker, an explosive charge positioned in front of the percussion cap and a plunger positioned in front of the explosive charge. A reservoir cavity in front of the plunger receives a substance for injection. The dart syringe projectile has a flight configuration with the substance in the reservoir cavity and an injection configuration with the plunger propelled forwardly by the explosive charge and the substance discharged from discharge ports in the needle, which are in spaced relation behind a needle tip.