Medicine Injection Device Using Pneumatic Pressing Mechanism
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Solution Overview
Problem
Current medicine injection devices are prone to breakdown and have high manufacturing costs due to complex structures, making it difficult to rapidly and accurately inject large amounts of fluid into patients, such as surgical patients.
Innovation Solution
A medicine injection device with a simple structure featuring inflatable parts and pumps to apply pressure to a medicine container, including a first and second pumping unit, connection pipes, valves, and a heating unit for temperature control, allowing for precise and reliable medicine delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If piston-type or syringe-type medicine injection devices are used to achieve accurate flow rate and dose control, then injection precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent uses an inflatable bag (pneumatic element) to apply pressure to the medicine container, replacing complex mechanical piston or syringe mechanisms. The inflatable bag can be inflated with gas to pressurize the medicine container and control medicine flow, achieving accurate injection while simplifying the overall device structure and reducing manufacturing costs.
2Measurement precision
If piston-type or syringe-type medicine injection devices are used to achieve accurate flow rate and dose control, then injection precision is improved, but reliability decreases due to higher breakdown risk
Solution Approach 1:
The inflatable bag mechanism provides a more reliable alternative to mechanical pistons or syringes. Pneumatic inflation is inherently more reliable as it has fewer moving parts that can wear or fail, while still providing precise control over medicine delivery through controlled gas inflation.
3Device complexity
If a simple structure is used to reduce breakdown risk and manufacturing cost, then device complexity is reduced, but injection precision and flow rate control may deteriorate
Solution Approach 1:
The patent combines the simplicity of a flexible inflatable bag with the precision control capability of pneumatic systems. By controlling the inflation pressure and volume of the gas-filled bag, the system can precisely regulate the pressure applied to the medicine container, thereby controlling the flow rate and injection dose accurately while maintaining a simple overall structure.
4Ease of manufacture
If a simple structure is used to reduce manufacturing cost, then manufacturing cost is reduced, but injection precision and flow rate control may deteriorate
Solution Approach 1:
The inflatable bag mechanism uses readily available pneumatic components and flexible materials that are cost-effective to manufacture. The system achieves precise injection control through simple gas inflation control rather than requiring expensive mechanical precision components, thereby reducing manufacturing costs while maintaining injection precision.
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 device reduces the risk of breakdown and manufacturing costs while enabling accurate and efficient injection of liquid medicine by using inflatable parts and pumps to apply pressure, ensuring reliable operation and temperature control.
Implementation Method 1
a medicine container configured to discharge the medicine contained therein along a designated path when a pressure is applied from outside
Implementation Method 2
a first pump capable of generating air of a preset pressure
Implementation Method 3
a heating unit for heating the medicine discharged from the medicine container, within a preset temperature range
Data Source
AI summary
Provided is a medicine injection device capable of injecting a liquid medicine into a human body by using a medicine container configured to discharge the medicine contained therein along a designated path when a pressure is applied from outside, the medicine injection device including one or more medicine pressing units including one or more inflatable parts capable of being inflated by air to apply a pressure to the medicine container, and a first pumping unit capable of inflating one of the inflatable parts by including a first pump capable of generating air of a preset pressure, and a first pipe connectable to the one of the inflatable parts. According to the present invention, a risk of breakdown and a total manufacturing cost may be reduced due to a simple structure of the medicine injection device.