Sealed Medication Dispensing Device Elastic Valve Leakage Prevention
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Solution Overview
Problem
Conventional medication dispensing and administering systems using syringes lack a mechanism for tight sealing and leakage prevention, leading to potential gas leakage and increased risks for clinical staff due to accidental needle sticks and infection from medicine residues.
Innovation Solution
A sealed medication dispensing and administering device comprising a syringe with an outer and inner barrel, a plunger, and a connecting holder with piercing needles, an elastic valve, and a fluid stopper, which ensures that medication and gas are contained within the holder during the dispensing and administering process, preventing leakage and exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional syringe method is used for medication dispensing and administering, then the operation is simple and quick, but the sealing performance is poor leading to gas and medicine fluid leakage
Solution Approach 1:
The device is divided into multiple functional components: outer barrel, inner barrel, plunger, connecting holder, elastic valve, and piercing needles. Each component performs a specific function, with the elastic valve providing sealing and the piercing needles enabling controlled access, thereby achieving reliable sealing through segmented functional design.
Solution Approach 2:
The inner barrel is nested within the outer barrel, and the plunger is nested within the inner barrel. The piercing needles are covered by and disposed within the elastic valve, which is provided inside the connecting cover. This nested structure enables compact integration while maintaining sealing integrity.
2Object-affected harmful factors
If conventional syringe with exposed needle is used, then the medication can be administered, but the risk of needle stick injury and infection to clinical staff increases
Solution Approach 1:
The elastic valve acts as a flexible sealing membrane that covers the piercing needles. The valve allows controlled penetration while maintaining a barrier that prevents exposure of sharp needles and contains medicine residues, thereby reducing needle stick injury risk and infection risk to clinical staff.
Solution Approach 2:
The elastic valve serves as an intermediary between the piercing needles and the external environment. It allows the needles to pass through for medication administration while simultaneously providing a barrier that protects clinical staff from direct contact with needles and medicine residues.
3Object-generated harmful factors
If conventional open system is used for medication withdrawal and injection, then the process is straightforward, but gas volatilized from medicine leaks into the environment
Solution Approach 1:
The device creates a sealed internal environment where gas volatilized from the medicine is contained rather than released into the external environment. The elastic valve and interconnected barrels form a closed system that traps volatile gases, effectively creating a contained atmosphere that prevents harmful gas leakage.
Solution Approach 2:
The harmful function of gas leakage is extracted and isolated from the external environment by containing it within the sealed internal system formed by the barrels and elastic valve. The sealing mechanism extracts the leakage pathway from the system, preventing volatile gases from escaping into the surrounding environment.
4Reliability
If conventional syringe method is used, then no additional sealing mechanisms are needed, but medicine fluid and gas are prone to leakage during withdrawal and injection
Solution Approach 1:
The elastic valve provides dynamic sealing that adapts to the operational requirements. The valve can deform elastically to allow piercing needle penetration while maintaining sealing integrity, and can dynamically respond to pressure changes during medication withdrawal and injection to prevent leakage.
Solution Approach 2:
The device employs composite structural design combining rigid components (barrels, holder) with flexible sealing elements (elastic valve). This composite approach integrates structural support with dynamic sealing functionality, achieving reliable leakage prevention through the synergistic combination of rigid and flexible materials.
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 solution provides a safe and quick method for medication dispensing and administering by maintaining a sealed environment, reducing the risk of gas leakage and needle exposure, thereby enhancing safety and efficiency for clinical staff.
Implementation Method 1
The two piercing needles are covered by and disposed within the elastic valve. The elastic valve is provided inside connecting cover... Upon connecting of the syringe onto the connecting holder, the air inlet tube and the medication inlet tube press the elastic valve such that the two piercing needles pass through the elastic valve
Data Source
AI summary
A sealed medication dispensing and administering device has a syringe, a plunger, a connecting holder, an elastic valve, and a liquid stopper. The syringe has an outer barrel having an air inlet tube and an inner barrel inserted inside the outer barrel and having a medication inlet tube. The plunger is inserted within the outer and inner barrels. The connecting holder is connected to the syringe and has a connecting cover with at least one outer connecting hole and two piercing needles respectively piercing inside the air inlet tube and the medication inlet tube. Inner spaces of the two piercing needles communicate with the at least one outer connecting hole. The elastic valve selectively covers the two piercing needles. The fluid stopper is disposed within the connecting cover and blocks one of the at least one outer connecting hole and the inner space of the air inlet tube.