Hemostasis Valve Side Port Flushing Conduits
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Solution Overview
Problem
Hemodialysis catheters cause inflammatory reactions and thrombus formation due to trapped blood in the hub, leading to potential clotting and complications from anti-clotting medications entering the bloodstream.
Innovation Solution
A hemostasis valve with multiple internal flushing ports is designed to prevent blood leakage and facilitate flushing, featuring a housing with a connector for medical introducers, a valve to prevent fluid leakage, and side ports connected by conduits for directing flushing fluid to the proximal passageway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a check flow with a sidearm is used to flush catheters, then blood and fluids can be cleared from the hub and lumen, but anti-clotting medicine must be left in the hub to prevent clotting of trapped blood
Solution Approach 1:
The hub is divided into multiple flushing zones using multiple conduits with different orientations. This segmentation allows targeted flushing of different areas including the back portion of the hub where blood may be trapped, enabling complete blood removal without leaving anti-clotting medicine residue that could enter the bloodstream
Solution Approach 2:
Multiple conduits are positioned at different orientations and locations around the hub, adding spatial dimensionality to the flushing capability. This multi-directional approach ensures that flushing fluid can reach and clear blood from all areas of the hub, including previously inaccessible regions
2Reliability
If multiple flushing ports are added to the hemostasis valve, then thorough flushing of the hub and passageway can be achieved, but the device complexity increases
Solution Approach 1:
The multiple conduits serve multiple functions: they can be used individually or in combination, allow flushing from different directions, and can accommodate various flushing fluid sources. This multi-functionality achieves thorough flushing capability while maintaining design efficiency
Solution Approach 2:
Multiple conduits are integrated into a single hemostasis valve housing structure, combining what could have been separate components into one unified device. This merging approach achieves comprehensive flushing coverage while reducing the number of separate parts and simplifying the overall system
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
Effectively prevents blood clotting and reduces the risk of anti-clotting medication entering the bloodstream, enhancing patient safety and recovery by ensuring thorough flushing of catheters.
Implementation Method 1
The valve member disposed within the housing is configured to prevent the leakage of blood or other bodily fluids from the adapter
Implementation Method 2
The side port is fluidly connected to the passageway by one or more conduits extending along a side of the housing and configured to direct the flushing fluid to a proximal portion of the passageway adjacent to the first opening
Data Source
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AI summary
A hemostasis valve flow adapter includes a housing, a connector on the distal end of the housing, a valve member within the housing, and a side port disposed on the housing. The housing has a first opening (40) in its proximal end, a second opening (30) in its distal end, and a passageway between the two openings, which are configured for introducing an elongate medical device. The connector is in communication with the second opening and is configured for attachment to the medical introducer. The valve member is configured to prevent blood leaking from the adapter. The side port is configured to be attached to a source of flushing fluid. The side port is fluidly connected to the passageway by one or more conduits (45) extending along a side of the housing and the conduits are configured to direct the flushing fluid to a proximal portion of the passageway adjacent to the first opening (40).