Unidirectional Valve for Automatic Catheter Flushing
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Solution Overview
Problem
Current manual flushing procedures for catheters and tubes are time-consuming, prone to contamination, and can lead to unsanitary conditions due to the need for frequent disconnection and reconnection of drainage bags and syringes, which can result in fluid leakage and potential infection risks.
Innovation Solution
A unidirectional valve system that allows for scheduled automatic flushing of catheters and tubes, alerting personnel to clogging, leaks, and maintenance needs, with a flange or valve plate that moves in response to fluid pressure to direct flow effectively and prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual flushing procedures are used to clean catheters and tubes, then the interior passageway can be cleared of particulates and residues, but the procedure is time-consuming and prone to contamination due to frequent disconnection and reconnection
Solution Approach 1:
The system divides the flushing function into separate components: a flush port for injecting cleansing fluid, a drainage port for waste collection, and a valve mechanism for controlling fluid direction. This segmentation allows the drainage bag to remain connected while enabling flushing operations without disconnection.
Solution Approach 2:
The valve acts as an intermediary mechanism that mediates between the flush port, drainage port, and catheter lumen. It controls fluid flow direction without requiring physical disconnection of the drainage bag, thereby preventing contamination while maintaining continuous drainage.
2Ease of operation
If the drainage bag is disconnected and reconnected during flushing, then the syringe can be attached to inject cleansing fluid, but fluid leakage occurs and unsanitary conditions result
Solution Approach 1:
The drainage bag assembly is designed with multi-functionality: it serves both as a continuous drainage collection device and as a platform for flushing operations. The integrated flush port and valve system enable both drainage and flushing functions without requiring separate devices or disconnections.
Solution Approach 2:
The valve mechanism automatically directs fluid flow based on its position: when oriented toward the drainage port, it enables draining; when oriented toward the flush port, it enables flushing. This self-regulating mechanism eliminates the need for manual disconnection and reconnection, preventing fluid leakage and contamination.
3Productivity
If frequent flushing is performed to prevent particulate build-up in the lumen, then fluid flow obstruction is prevented, but the repeated manual handling increases infection risk
Solution Approach 1:
The system enables preliminary flushing actions to be performed without breaking the sterile field. The closed-system design with integrated flush port allows cleansing fluid to be injected before particulate build-up occurs, preventing obstruction while maintaining continuous connection and reducing infection risk.
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 reduces the risk of contamination, minimizes manual handling errors, and ensures consistent fluid flow by automating the flushing process, thereby reducing recovery time and preventing infections.
Implementation Method 1
a flange or valve plate that moves in response to fluid pressure to direct flow effectively
Data Source
AI summary
A flushable valve which has unidirectional flushing can be used to flush a lumen of a stem, catheter and/or tubing. By flushing the stent, catheter and/or tubing, particulates or residue that can block or impede the flow of fluid out of the stent, catheter and/or tubing can be overcome thereby facilitating continued drainage. An automatic flushable valve eliminates manual manipulation of the device. In an embodiment of the invention, a back pressure sensor can be used to detect when the flow through the stent, catheter and/or tubing has become impeded and activates a flushing cycle. In an embodiment of the invention, a leak detector can be used to detect when an operation has caused the flush device to leak. In various embodiments of the invention, the back pressure sensor and the leak detector can be used to detect that the flush device is operating under normal conditions.