Dual-Needle Doser for Simultaneous Medicine Mixing
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Solution Overview
Problem
Current medicine mixing methods in clinical settings are complex, time-consuming, and prone to errors and contamination, compromising medication safety.
Innovation Solution
A doser with two needles is designed to simplify the mixing process by allowing simultaneous penetration through the medicine and solution containers, featuring a hollow upper and lower needle, a cup-shaped mixing body, anti-slip buckles, and sealing sleeves to ensure sterility and air-tightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single injector is used to mix medicine with solution in two separate steps, then the mixing process can be completed, but the operation becomes complicated and time-consuming
Solution Approach 1:
The patent combines two separate injection operations into a single integrated device with two needles. The first needle inserts into the medicine container while the second needle simultaneously inserts into the solution container, allowing both mixing actions to occur in one operation. This merging of operations directly resolves the contradiction by reducing time consumption while maintaining operational simplicity through integrated design.
Solution Approach 2:
The dosing device is designed with multi-functionality to perform multiple tasks simultaneously. The single device insertion action accomplishes both medicine injection and solution injection, plus automatic mixing. This multi-functional design eliminates the need for separate injection steps, thereby improving productivity without increasing operational complexity.
2Loss of time
If a single injector is used for sequential injection, then the device structure is simple, but the operation time increases and errors are more likely to occur
Solution Approach 1:
The patent merges two sequential injection operations into a simultaneous dual-needle insertion system. The dosing device is designed with a handle that simultaneously positions both needles for concurrent insertion into the medicine container and solution container. This merging reduces mixing time while maintaining ease of operation through a unified insertion motion.
Solution Approach 2:
The device is pre-configured with two needles positioned and oriented for simultaneous insertion. The handle design pre-positions both needles at the correct angles and depths, eliminating the need for separate adjustment steps. This preliminary configuration allows rapid simultaneous injection while keeping the operation simple and intuitive.
3Reliability
If separate injection steps are used, then each step can be controlled independently, but contamination risk increases during the mixing process
Solution Approach 1:
The patent combines both injection needles into a single dosing device that maintains a closed, sterile system throughout the operation. The dual-needle design allows simultaneous penetration of the medicine container and solution container while keeping all components enclosed in a sterile barrier, thereby reducing contamination risk while maintaining independent control of each injection pathway.
Solution Approach 2:
The dosing device acts as an intermediary sterile barrier between the external environment and the medicine/solution containers. The integrated handle and needle assembly provides a controlled interface that prevents contamination during the mixing process, while the separate needle pathways allow independent control of medicine and solution flow to ensure medication safety.
4Productivity
If multiple injection operations are performed sequentially, then each operation can be optimized individually, but the overall process becomes time-consuming
Solution Approach 1:
The patent merges two separate injection operations into a single integrated dosing device with dual needles. The handle design combines both needle insertion actions into one simultaneous operation, allowing the medicine container and solution container to be penetrated at the same time. This merging improves mixing efficiency while the modular needle and container design keeps the overall device structure manageable.
Solution Approach 2:
The dosing device is segmented into distinct functional components: a handle for operation, two separate needles for independent injection pathways, and a container holder for securing the medicine and solution containers. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity and enabling simultaneous operation for improved productivity.
Data Source
Figure 1~2
Figure 3
AI summary
A doser having two needles. The two needles consist of a needle seat (1), an upper needle (2), and a lower needle (3). The upper needle (2) and the lower needle (3) are arranged at two sides of the needle seat (1), and the upper needle (2) and the lower needle (3) both have a hollow structure and are in communication with each other. A medicine mixing body (4) of a cup structure is formed through extension in the direction along the edge of the needle seat (1) toward the upper needle (2). When the doser having two needle is used, it is only required that the upper needle (1) penetrates through a sealing plug of a medicine container and the lower needle (3) simultaneously penetrates through a sealing plug inside a sealing cover on a transfusion container, and by squeezing the transfusion container, medicine in the medicine container can be mixed with a solution in the transfusion container, which makes the medicine mixing operation simpler and more time saving.