Needled Syringe Spray Cap for Simple Drug Atomization
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Solution Overview
Problem
Existing syringes and liquid atomization apparatuses are separate devices, making it difficult to use a syringe as a liquid atomization apparatus and vice versa, and the process of converting a syringe into a spray device is complicated.
Innovation Solution
A spray device that integrates a needled syringe with a spray cap having an atomization structure, allowing the syringe to be used as either a syringe or a spray device without removing the needle, by attaching the spray cap to the syringe's distal end, which accommodates the needle and converts the drug solution into a mist form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a syringe is converted into a liquid atomization apparatus by removing the needle and attaching a separate atomization device, then the syringe can be used as a spray device, but the conversion process becomes complicated
Solution Approach 1:
The patent combines the atomization structure directly with the syringe barrel to form an integrated spray device. The atomization structure includes a chamber formed within the barrel and an atomization element positioned to receive liquid from the barrel, eliminating the need for separate attachment of external atomization devices and simplifying the overall device configuration.
Solution Approach 2:
The syringe is designed to perform multiple functions: it can operate as a traditional injection syringe or be converted into a liquid atomization apparatus by simply replacing the needle with a cap that contains the atomization structure. This multi-functional design allows the same base device to serve different purposes without requiring complex conversion mechanisms.
2Quantity of substance
If the drug solution path in the spray cap is long, then the spray cap can accommodate more drug solution, but the amount of drug solution wasted in the path increases
Solution Approach 1:
The patent optimizes the parameters of the drug solution path, specifically minimizing the length and volume of the path while maintaining sufficient capacity. The chamber is sized to hold the minimum necessary amount of drug solution, and the path from the chamber through the atomization element to the spray port is kept as short as possible, thereby reducing the volume of drug solution that would be wasted in the path.
3Device complexity
If the spray cap accommodates the needle without removing it from the barrel, then the conversion to spray device is simplified, but the needle must be integrated into the spray cap structure
Solution Approach 1:
The spray cap is designed to receive and accommodate the needle within its structure. The needle is inserted through the partition into the chamber, and the atomization structure is positioned to receive liquid from the needle. This nested configuration allows the needle to be integrated into the spray cap without requiring removal from the barrel, simplifying the assembly process while maintaining a compact design.
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 easy conversion between a syringe and a spray device with reduced drug solution wastage, as the drug solution path is shortened, and the device can handle various viscosities with a variable capacity container.
Implementation Method 1
the spray cap has an atomization structure that changes a drug solution supplied from the drug solution storage chamber through the needle into a mist form
Data Source
AI summary
A spray device includes: a needled syringe including a barrel in which a drug solution storage chamber is formed, and a needle fixed to a distal end of the barrel; and a spray cap attachable to the distal end of the barrel. In a state in which the spray cap is attached to the distal end of the barrel, the spray cap accommodates the needle therein. The spray cap includes an atomization structure configured to change a drug solution supplied from the drug solution storage chamber through the needle into a mist form, and to spray the drug solution changed into the mist form.