Medical Liquid Supply Device Flow Control
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Solution Overview
Problem
Existing medical liquid supply devices for ultrasonic treatments face challenges in ensuring consistent liquid supply and suction control, leading to inefficiencies and instability in treatment processes, particularly in maintaining a stable flow and preventing liquid from accumulating in the supply path.
Innovation Solution
A medical liquid supply device with a configuration that includes a liquid supply path, a suction path, and a communication path between them, controlled by a unit that adjusts the suction amount based on switching operations between different modes to ensure continuous liquid supply and prevent backflow into the suction path during treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the liquid supply amount is increased to ensure continuous liquid supply in the liquid supply path, then the reliability of liquid supply is improved, but the complexity of controlling liquid flow and suction coordination increases
Solution Approach 1:
The control unit receives signals from the liquid supply mode input section and automatically adjusts the suction amount based on the operating mode (liquid-supply ON or OFF). This feedback mechanism ensures that the liquid supply path maintains continuous liquid flow without requiring complex manual coordination between supply and suction systems.
Solution Approach 2:
The system automatically regulates itself by having the control unit manage the suction unit based on the selected liquid supply mode. The suction unit self-adjusts its operation to配合 the liquid supply status, eliminating the need for separate control mechanisms and reducing overall system complexity while maintaining reliability.
2Productivity
If the suction amount is increased to prevent liquid accumulation in the liquid supply path, then the productivity of liquid circulation is improved, but the risk of disrupting continuous liquid supply to the distal end increases
Solution Approach 1:
The suction amount is made dynamic rather than fixed. The control unit automatically adjusts the suction amount based on the liquid supply mode: in liquid-supply ON mode, suction is reduced to maintain continuous flow to the distal end; in liquid-supply OFF mode, suction can be increased to prevent accumulation. This dynamic adjustment resolves the contradiction between circulation efficiency and continuous supply reliability.
Solution Approach 2:
The system changes the suction parameter (suction amount) based on the operating mode. By switching between different suction levels corresponding to different liquid supply modes, the system optimizes liquid circulation efficiency while ensuring continuous supply when needed, without requiring complex additional control mechanisms.
3Speed
If the liquid supply path is kept open for continuous supply, then the response time for liquid supply is improved, but the likelihood of liquid backflow into the suction path increases
Solution Approach 1:
The system employs periodic mode switching between liquid-supply ON and OFF states. During liquid-supply ON mode, the path remains open for rapid response; during liquid-supply OFF mode, the suction unit operates at higher levels to prevent backflow. This periodic alternation allows the system to achieve both fast response times and backflow prevention without requiring complex one-way valve mechanisms.
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
This configuration ensures stable and efficient liquid supply from the distal end of the liquid supply path, even in the OFF mode, with high response times and controlled suction forces, enhancing the reliability and effectiveness of ultrasonic treatments.
Implementation Method 1
a liquid supply unit to which a proximal end of the first path defining portion is connected, and which is configured to cause a liquid to flow into the liquid supply path in a flow amount greater than or equal to a standard flow amount
Implementation Method 2
a suction unit to which a proximal end of the second path defining portion is connected, and which is configured to perform suction via the suction path
Implementation Method 3
a control unit which is configured to control an amount of suction by the suction unit to adjust a flow amount of the liquid flowing from the liquid supply path into the suction path via the communication path
Data Source
AI summary
In a medical liquid supply device, a control unit controls a liquid supply driver so that a liquid flows from the liquid supply driver in a liquid supply path regardless of whether a liquid-supply ON mode is selected. All of the liquid flowing from the liquid supply driver flows into a communication path when the liquid-supply ON mode is not selected. At least a part of the liquid flowing from the liquid supply driver does not flow into the communication path and is thereby supplied from a distal end of the liquid supply path when the liquid-supply ON mode is selected.