Adjustable Tracheostomy Valve Diaphragm Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional tracheostomy valves often cause suffocation sensations in patients due to their inability to accommodate adjustable airflow rates, requiring prolonged training periods for tolerance.
Innovation Solution
An adjustable-flow tracheostomy valve assembly with a housing, diaphragm, and flow-adjustment component, allowing for mechanical adjustment of airflow restriction through a movable wall portion, actuators, and a segmented diaphragm to accommodate varying airflow needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional tracheostomy valves with fixed diaphragms are used, then the valve structure is simple, but the airflow rate cannot be adjusted causing suffocation sensations
Solution Approach 1:
The patent applies dynamics by making the diaphragm movable rather than fixed. The diaphragm can transition between closed and open positions, allowing the airflow rate to be dynamically adjusted. This resolves the contradiction by enabling adaptability (adjustable airflow) while maintaining a relatively simple valve structure through a single movable component.
Solution Approach 2:
The patent segments the valve structure into distinct functional components: a housing, a movable diaphragm, and a flow-adjustment component. This segmentation allows independent adjustment of airflow parameters without complicating the overall structure, as each component has a specific function that can be optimized separately.
2Reliability
If daily trials with conventional valves are performed to build tolerance, then patient tolerance may eventually be achieved, but the training time is prolonged
Solution Approach 1:
The patent applies parameter changes by enabling adjustment of the airflow rate parameter through the flow-adjustment component. This allows the airflow characteristics to be modified to match patient comfort levels, thereby reducing the time required for tolerance training while ensuring reliable patient adaptation.
Solution Approach 2:
The patent applies preliminary action by allowing airflow parameters to be pre-adjusted before patient use. The flow-adjustment component can be configured in advance to provide optimal airflow conditions, eliminating the need for prolonged trial-and-error training and directly achieving patient tolerance.
3Ease of operation
If the diaphragm is biased to closed position to prevent air passage, then airflow control is precise, but patient comfort is reduced due to suffocation sensation
Solution Approach 1:
The patent introduces an intermediary mechanism - the flow-adjustment component with its wall portion - that mediates between the closed-position bias of the diaphragm and the patient's airflow needs. This intermediary allows precise airflow control to be maintained while adjusting the degree of closure to prevent suffocation sensations.
Solution Approach 2:
The patent makes the diaphragm dynamic rather than statically closed. The diaphragm can move between closed and open positions, allowing the airflow control to adapt to patient needs. This dynamic capability maintains precise control while eliminating the harmful suffocation sensation associated with fixed closed-position diaphragms.
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
Enables patients to tolerate tracheostomy valves more comfortably by allowing adjustable airflow, reducing training time and improving tolerance through mechanical adjustment of airflow restriction.
Implementation Method 1
the diaphragm being configured to selectively move to an open position to enable air to be drawn into the distal opening, passed the diaphragm, and out of the proximal opening in an inhaling direction in response to a proximal side of the diaphragm being exposed to a predetermined negative air pressure applied at the diaphragm as a suction force
Data Source
AI summary
A representative method includes: providing a tracheostomy valve assembly having a housing and a diaphragm, the housing defining an interior airflow path, the housing having an exterior surface, a distal opening extending from the exterior surface to the interior flow path and a proximal opening, the distal opening and the proximal opening communicating with the interior airflow path, the diaphragm being disposed within the housing along the interior airflow path, the diaphragm being biased to a closed position to prevent air from passing the diaphragm along the interior airflow path, the diaphragm being configured to selectively move to an open position to enable air to be drawn into the distal opening, passed the diaphragm, and out of the proximal opening in an inhaling direction in response to a proximal side of the diaphragm being exposed to a predetermined negative air pressure applied at the diaphragm as a suction force; and urging the diaphragm away from the closed position with an actuation surface, movably coupled to the housing, to adjust airflow restriction through the tracheostomy valve assembly.