Automatic Clamp System for Stable IV Injection Rate Control
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Solution Overview
Problem
Current methods for injecting fluids into hospitalized patients using the free-falling scheme require frequent adjustments by nurses, leading to inaccuracies in fluid delivery due to variations in falling speed and hydraulic pressure, especially when multiple fluid packs are used, and existing automatic injection apparatuses are expensive and difficult to control.
Innovation Solution
An automatic clamp system that adjusts the injection rate by controlling the opening/closing of a medicine hose using an electric driving element, with a detection unit to monitor drop counts and a control unit to adjust the rate based on predetermined values, allowing for uniform fluid delivery and compatibility with various hose diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a clamp is used to control the opening state of a medical fluid hose, then the injected fluid quantity can be adjusted, but the injection rate becomes unstable as hydraulic pressure varies with fluid pack volume
Solution Approach 1:
The patent employs a feedback mechanism where a detection unit continuously monitors the actual injection rate by counting fluid drops, compares it with the target rate, and automatically adjusts the clamp's opening degree via a driving element to maintain stable injection rate despite varying hydraulic pressure
Solution Approach 2:
The system performs self-adjustment by automatically controlling the clamp opening degree based on real-time detection of injection rate, eliminating the need for continuous manual intervention and maintaining stable injection throughout the fluid pack volume change
2Measurement precision
If an automatic injection apparatus with injector and controller is used, then injection quantity can be controlled, but the system becomes very expensive
Solution Approach 1:
The patent extracts and isolates only the essential control function (clamp opening degree adjustment) from complex automatic injection systems, using a simple driving element to control the clamp while relying on the existing free-fall injection mechanism, thereby achieving cost-effective automatic control
Solution Approach 2:
The system uses a fluid pack that serves multiple functions: it acts as both the fluid storage container and the driving force source through its weight, eliminating the need for separate pressure generation mechanisms and reducing overall system complexity and cost
3Quantity of substance
If the number of fluid drops is adjusted manually, then injection quantity can be controlled, but frequent adjustments are required as hydraulic pressure changes
Solution Approach 1:
The system performs self-adjustment by automatically controlling the clamp opening degree based on real-time detection of injection rate, eliminating the need for continuous manual intervention and maintaining stable injection throughout the fluid pack volume change
Solution Approach 2:
The detection unit continuously monitors the injection rate throughout the entire injection process, and the driving element continuously adjusts the clamp opening degree to maintain target injection rate, ensuring uninterrupted and consistent fluid delivery without manual pauses or adjustments
4Ease of operation
If a roller type clamp is used to control hose opening, then injection rate can be adjusted, but the clamp must be adjusted at multiple sites when multiple fluid packs are used
Solution Approach 1:
The patent merges multiple clamp functions into a single automatic clamp that controls the main fluid hose, eliminating the need for multiple separate clamps at different sites. The single clamp is automatically adjusted based on overall injection rate detection, simplifying the system while maintaining control effectiveness
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 system ensures precise and uniform fluid delivery through automatic adjustment of the injection rate, reducing the risk of errors and allowing for efficient management of multiple clamps, even when fluid packs with different pressures are used, without the need for complex connections.
Implementation Method 1
a free-falling scheme is almost used when fluid is injected into a hospitalized patient
Implementation Method 2
injecting fluid through falling by potential energy
Data Source
AI summary
The present invention relates to an apparatus and a system for controlling an amount of medicine or fluid injection through falling due to potential energy of the fluid. For example, the present invention can automatically adjust an injection rate of a medicine injected into a patient by controlling an opening/closing degree of a medicine hose by using a driving element driven by electric power according to a comparison of the number of drops with a predetermined value. An apparatus for realizing the method includes an accommodating case for accommodating a connecting portion for connecting a fluid, a detection unit for detecting the number of drops, a control unit for comparing the information detected by the detection unit, and a driving element for opening and closing a passage of the medicine hose based on the contents analyzed by a control unit.