Adjustable Negative Pressure Drainage System for Pleural Effusion
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Solution Overview
Problem
Current drainage systems for managing pleural effusions and malignant ascites lack a fluid collection device with adjustable negative pressure for effective bodily fluid drainage.
Innovation Solution
A drainage system comprising a fluid-receiving body with a fluid-receiving chamber and an actuation body, where the actuation member is manually movable to increase the volume of a suction chamber, reducing pressure and facilitating the removal of bodily fluids through a connected drainage catheter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a drainage system uses a fixed negative pressure mechanism, then the structure is simple, but the adaptability to different patients and conditions is poor
Solution Approach 1:
The patent implements a dynamic negative pressure adjustment mechanism where a movable partition wall can change the volume of the suction chamber, thereby adjusting the negative pressure level. This allows the system to adapt to different patients and drainage needs without requiring multiple fixed-pressure devices, resolving the contradiction between adaptability and structural simplicity.
Solution Approach 2:
The patent changes the physical parameter of suction chamber volume by moving the partition wall between different positions. This volume change directly alters the negative pressure parameter, enabling the system to provide adjustable pressure levels suitable for various drainage scenarios while maintaining a single unified device structure.
2Productivity
If a drainage system uses high negative pressure, then the drainage efficiency is improved, but the risk of tissue damage and patient discomfort increases
Solution Approach 1:
The patent enables dynamic adjustment of negative pressure levels through the movable partition wall mechanism. Clinicians can start with higher pressure for efficient drainage and then reduce pressure as drainage progresses or if tissue damage signs appear, thereby optimizing the balance between drainage efficiency and patient safety throughout the procedure.
Solution Approach 2:
The system allows for monitored adjustment of negative pressure based on patient response and drainage progress. The ability to reduce pressure when necessary provides a feedback mechanism that prevents tissue damage while maintaining effective drainage when needed, addressing the contradiction between productivity and harmful effects.
3Reliability
If a drainage system requires professional medical intervention for operation, then the reliability of fluid removal is improved, but the ease of home use and patient independence is reduced
Solution Approach 1:
The patent designs the drainage system with a user-actuated mechanism where patients can independently adjust the negative pressure by moving the partition wall. This self-service capability allows patients to control their own drainage without requiring constant professional intervention, improving both ease of home use and reliability through patient empowerment.
Solution Approach 2:
The patent creates a unified device that combines the suction chamber, partition wall mechanism, and fluid collection container into a single integrated system. This homogeneous design simplifies the overall operation and maintenance, making it more suitable for home use while maintaining reliable fluid removal 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 system allows for controlled and efficient drainage of bodily fluids by adjusting the negative pressure, enhancing the management of pleural effusions and malignant ascites through a user-friendly and adaptable mechanism.
Implementation Method 1
increasing a volume of a suction chamber and reducing a pressure within the suction chamber. The reduced pressure communicated through the inlet of the fluid-receiving body
Data Source
AI summary
A drainage system for draining bodily fluid from a body cavity includes a fluid-receiving body having a fluid-receiving chamber located therein that receives a bodily fluid through an inlet. An actuation body is connected to the fluid-receiving body. The actuation body includes an actuation member that is accessible from outside the actuation body and is manually movable relative to the actuation body along a dimension of the actuation body. The actuation member is operatively connected to a suction inducing member. Manual actuation of the actuation member relative to the actuation body moves the suction inducing member thereby increasing a volume of a suction chamber and reducing a pressure within the suction chamber. The reduced pressure communicated through the inlet of the fluid-receiving body.