Adjustable Tracheostomy Valve Aperture Control
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Solution Overview
Problem
Conventional tracheostomy valves lack adjustability for inspiratory and expiratory air flows, limiting patient outcomes and requiring an 'all or nothing' compliance, as they do not allow for simulation of different tracheostomy tube sizes or adjustments to accommodate individual patient tolerance.
Innovation Solution
The development of an adjustable tracheostomy weaning and phonating valve with rotatable adjustment rings that allow for infinite or finite adjustments in air flow, enabling control over both inspiratory and expiratory flows, and the ability to simulate different tracheostomy tube sizes by altering the valve's aperture openings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tracheostomy valves are used to block expiratory air flow through the valve, then phonation is enabled by directing expiratory flow through the patient's vocal cords, but the patient experiences intolerance or discomfort due to lack of adjustability
Solution Approach 1:
The valve incorporates adjustable components that allow the expiratory opening to be dynamically modified. The adjustment mechanism enables the expiratory flow restriction to be changed from fully blocked to partially open, allowing the valve to adapt to different patient tolerance levels while maintaining phonation capability when needed.
Solution Approach 2:
The invention changes the physical parameter of expiratory flow resistance by providing adjustable openings in the valve body. This allows the resistance to expiratory flow to be varied, enabling patients to tolerate the valve better while still achieving phonation when the opening is reduced or closed.
2Ease of manufacture
If conventional tracheostomy valves with fixed aperture sizes are used, then manufacturing is simplified, but the ability to simulate different tracheostomy tube sizes is lost
Solution Approach 1:
The valve is segmented into multiple functional components including the valve body, adjustment mechanism, and adjustable aperture elements. This segmentation allows the aperture size to be modified independently while maintaining the overall valve structure, enabling size simulation without requiring multiple complete valve designs.
Solution Approach 2:
The valve incorporates dynamic aperture adjustment capabilities that allow the effective opening size to be changed. This enables the same valve to simulate different tube sizes by adjusting the aperture, eliminating the need to manufacture multiple valves for different sizes.
3Device complexity
If conventional tracheostomy valves with fixed air flow characteristics are used, then device complexity is reduced, but patient outcomes are limited due to inability to adjust to individual tolerance
Solution Approach 1:
The valve incorporates adjustable components that allow the expiratory opening to be dynamically modified. The adjustment mechanism enables the expiratory flow restriction to be changed from fully blocked to partially open, allowing the valve to adapt to different patient tolerance levels while maintaining phonation capability when needed.
Solution Approach 2:
The invention changes the physical parameter of expiratory flow resistance by providing adjustable openings in the valve body. This allows the resistance to expiratory flow to be varied, enabling patients to tolerate the valve better while still achieving phonation when the opening is reduced or closed.
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
This solution provides improved patient comfort and tolerance by allowing gradual adjustments to air flow, facilitating the weaning process from the tracheostomy tube and enabling evaluation of smaller tube sizes without immediate replacement, thus enhancing the tracheostomy management and patient adaptation.
Implementation Method 1
When a patient inhales, the diaphragm opens and allows air to flow through air ports
Implementation Method 2
When the patient exhales, the diaphragm closes and the first valve blocks airflow from the tube, thereby causing the air to be forced past the person's larynx and epiglottis
Data Source
AI summary
A valve, usable in connection with a tracheostomy tube, permits phonation by selectively blocking passage of air therethrough. The valve includes a main body portion with first and second internal passages. A first aperture extends radially through a peripheral wall, connecting the first internal passage to an environment external to the main body. A second aperture extends radially through the peripheral wall, connecting the second internal passage to the environment. A trach body portion defines a third internal passage and is connected to the main body portion. A flapper valve is sandwiched between the main body portion and the trach body portion. First and second adjustment rings permit adjustment of opening defined by the first and second apertures, thereby permitting control over the air passing through the first and second apertures.