Adjustable Huff Cough Valve for Threshold Pressure Training
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Solution Overview
Problem
The Huff Cough technique is difficult for some populations to effectively perform without coaching from respiratory professionals, necessitating a user-friendly simulation device for improved control over the treatment.
Innovation Solution
A respiratory treatment device with a selectively adjustable valve mechanism that opens at a threshold exhalation pressure, allowing for controlled airflow simulation mimicking a Huff Cough, featuring a flap valve, adjustable valve brace, and a reset button to manage airflow, made from non-corrosive plastic materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a valve mechanism is added to control airflow, then the control over treatment is improved, but the device complexity increases
Solution Approach 1:
The valve mechanism is designed to automatically open and close in response to the patient's own breath pressure, eliminating the need for external control mechanisms or professional supervision. The valve opens when breath pressure exceeds a threshold and closes automatically afterward, providing self-regulating treatment control.
Solution Approach 2:
The device uses pneumatic pressure from the patient's breath to actuate the valve mechanism. The breath pressure itself serves as the actuating force that opens the valve, while a spring provides the closing force, creating a simple pressure-driven control system without complex electronics or mechanical actuators.
2Reliability
If a threshold pressure mechanism is implemented, then the Huff Cough simulation accuracy is improved, but the device complexity increases
Solution Approach 1:
The device incorporates a threshold pressure mechanism that only allows the valve to open when breath pressure exceeds a specific threshold level. This ensures accurate simulation of the Huff Cough technique by reproducing the characteristic pressure buildup and release pattern, while the spring-based implementation keeps the mechanism simple.
3Ease of manufacture
If plastic materials are used instead of metal, then production costs are reduced and corrosion resistance is improved, but the structural strength may be compromised
Solution Approach 1:
The device combines plastic components for the housing and structural elements with a metal spring for the valve mechanism. This composite material approach allows the use of corrosion-resistant, easy-to-manufacture plastic for most components while retaining the high strength and elasticity properties of metal where mechanically critical, specifically in the spring that provides the closing force for the valve.
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 users to replicate the Huff Cough effectively without professional supervision, providing controlled airflow simulation with adjustable pressure settings and easy cleaning, reducing production costs and material susceptibility.
Implementation Method 1
a valve moveable in response to a threshold exhalation pressure at the inlet between a closed position where the flow of air from the inlet to the outlet is restricted, and an open exhalation position where the flow of air from the inlet to the outlet is less restricted
Implementation Method 2
a reset button configured to return the valve from the open exhalation position to the closed position
Data Source
AI summary
A respiratory treatment device having an inlet configured to receive exhaled air into the device, an outlet configured to permit exhaled air to exit the device, a valve moveable in response to a threshold exhalation pressure at the inlet between a closed position where the flow of air from the inlet to the outlet is restricted, and an open exhalation position where the flow of air from the inlet to the outlet is less restricted, and a valve brace configured to support the valve, wherein a position of the valve brace relative to the valve is selectively adjustable to increase or decrease the threshold exhalation pressure.