Vacuum Suction Head With Pneumatic Coupling for Clean Pressure Control
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Solution Overview
Problem
Current suction systems for medical and non-medical applications face challenges in efficiently applying sub-ambient pressure and draining fluids from target volumes, particularly in maintaining controlled pressure levels and preventing contamination of monitoring systems.
Innovation Solution
A vacuum system comprising a suction head, a waste container, and a vacuum pump apparatus with a non-mechanical coupling arrangement, featuring a pneumatic coupling mechanism and a control system for monitoring and controlling working pressure, which includes a venting arrangement for maintaining desired flow rates and preventing fluid communication between the suction head and the pump drive unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical coupling arrangement is used to drive the pump head, then the power transmission is direct and efficient, but the monitoring system becomes vulnerable to contamination from fluids in the target volume
Solution Approach 1:
A pneumatic coupling mechanism is introduced as an intermediary between the powered pump drive and the pump head. This pneumatic coupling transmits power without requiring direct mechanical contact, thereby preventing fluid contamination of the monitoring system while maintaining drive functionality.
Solution Approach 2:
The patent replaces the traditional mechanical coupling arrangement with a pneumatic coupling mechanism. This substitution eliminates the risk of fluid contamination in mechanical components and monitoring systems while preserving the power transmission function through pneumatic pressure differentials.
2Object-affected harmful factors
If the pump head is sealed to prevent fluid leakage, then contamination is prevented, but the noise level increases due to trapped air compression
Solution Approach 1:
The patent extracts or vents trapped air from the sealed pump head through a controlled venting mechanism. This allows the pump head to remain sealed for contamination prevention while periodically releasing compressed air to reduce noise generation during operation.
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 effectively applies sub-ambient pressure for efficient fluid drainage while minimizing contamination risks and operating noise, allowing for easy disconnection and disposal of components, and providing a cost-effective solution for medical applications.
Implementation Method 1
a pneumatic coupling mechanism and a control system for monitoring and controlling working pressure
Implementation Method 2
vacuum pump apparatus adapted for providing a predetermined working pressure in said system below external ambient pressure
Data Source
AI summary
A suction head in fluid communication with a pump head provides a sub-ambient working pressure to a target area, enabling drainage thereof to a waste container. The pump head is coupled non-mechanically to a pump drive. A control system for a suction system is also provided.