Electro-osmosis Pump Liquid Medicine Injection Device
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Solution Overview
Problem
Conventional liquid medicine injection devices fail to provide an excellent wearable sensation, are not powered efficiently, and do not maintain sterility, making them unsuitable for long-term use by patients, particularly diabetic children, and lack features for safe operation and data recording.
Innovation Solution
A liquid medicine injection device with an electro-osmosis pump, a needle assembly, and an adhesive member for comfortable attachment, featuring a check valve system, a driver with separated operation fluid, and sensors for monitoring liquid medicine levels and injection control, ensuring reliability, safety, and data recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a conventional liquid medicine injection device is used, then it can inject liquid medicine into the patient's body, but it cannot provide excellent wearable sensation and cannot be driven with low power
Solution Approach 1:
The patent replaces conventional mechanical pump systems with an electro-osmosis pump that utilizes electro-osmotic flow to move liquid medicine. This substitution of mechanical pumping mechanism with an electro-osmotic mechanism enables low power consumption while maintaining reliable liquid delivery, directly resolving the contradiction between power efficiency and operational reliability.
Solution Approach 2:
The patent changes the operating parameters by using electro-osmotic flow characteristics instead of mechanical pumping parameters. The electro-osmosis pump operates at significantly lower power levels while providing consistent liquid flow, transforming the device from high-power mechanical operation to low-power electro-osmotic operation, thereby achieving both low power consumption and reliable performance.
2Reliability
If a conventional liquid medicine injection device is used, then it can be attached to the human body, but it cannot maintain sterility
Solution Approach 1:
The patent divides the injection device into separate sterile and non-sterile zones. The liquid medicine tank and needle assembly are maintained as sterile components, while the adhesive member and external housing are non-sterile. This segmentation allows the device to maintain sterility where needed without requiring the entire device to be sterile, thus maintaining reliability while managing complexity.
Solution Approach 2:
The patent introduces a barrier membrane or seal system as an intermediary between sterile and non-sterile regions. This intermediary component allows the device structure to transition from requiring complete sterility to allowing controlled interfaces between sterile and non-sterile areas, maintaining sterility protection while simplifying the overall device structure.
3Ease of operation
If a conventional liquid medicine injection device is used, then it can be operated by medical professionals, but it is not easy for ordinary persons to use
Solution Approach 1:
The patent implements automatic injection control where the electro-osmosis pump system automatically regulates liquid medicine flow and injection timing without requiring manual intervention. The device can be programmed or set by the user, then operates autonomously, transforming the device from requiring professional operation to enabling self-service by ordinary patients.
Solution Approach 2:
The patent designs the device with universal applicability for both medical professionals and ordinary users. The electro-osmosis pump provides precise control that professionals need, while the automated operation and simple interface make it equally easy for ordinary persons to use, eliminating the restriction that limited operation to medical professionals only.
4Ease of manufacture
If a compact liquid medicine injection device is manufactured, then manufacturing cost is reduced, but the device must maintain all required functions
Solution Approach 1:
The patent merges multiple functions into the electro-osmosis pump system, which simultaneously provides liquid pumping, flow control, and power-efficient operation. By combining these functions into a single integrated component rather than using separate mechanical parts, the device achieves compact size and reduced manufacturing cost while maintaining all required functions.
Solution Approach 2:
The patent changes from mechanical parameter-based design to electro-osmotic parameter-based design, enabling more compact component dimensions. The electro-osmosis pump requires smaller physical dimensions compared to mechanical pumps while providing equivalent or superior functional performance, allowing compact manufacturing without sacrificing functionality.
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 provides a comfortable, long-lasting, and reliable means of injecting liquid medicine with low power consumption, maintains sterility, and allows for safe operation and data recording, minimizing inconvenience and ensuring proper medical examination data.
Implementation Method 1
an electro-osmosis pump that is connected with the liquid medicine tank and moves the liquid medicine
Data Source
AI summary
The present invention discloses a liquid medicine injection device that is attached to a patient's body to inject liquid medicine such as insulin at an appropriate time.A liquid medicine injection device according to the present invention includes: a case; a liquid medicine tank that is disposed in the case and where liquid medicine is received; an electro-osmosis pump that is connected with the liquid medicine tank and moves the liquid medicine; a needle assembly that receives the liquid medicine by being connected to the electro-osmosis pump and injects the received liquid medicine into a human body; and an adhesive member combined to the case and attached to the human body.