Adaptive Chest Wall Oscillation Aligned With Breathing Cycles
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Solution Overview
Problem
High frequency chest wall oscillation therapy can be uncomfortable and inefficient for patients due to inconsistent application of force during breathing cycles, particularly affecting those with mucus build-up conditions like cystic fibrosis.
Innovation Solution
A chest wall oscillation therapy system with a sensor-driven therapy control system that adjusts oscillation frequency and intensity based on patient breathing patterns, using a force generator to provide targeted impact forces during exhalation and reduced forces during inhalation, integrated with a wearable garment and adjustable connector system for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If HFCWO therapy is applied to free mucus from the upper respiratory tract, then airway clearance is improved, but patient comfort deteriorates and force application efficiency decreases
Solution Approach 1:
The system dynamically adjusts oscillation parameters (frequency, amplitude, duration) in real-time based on detected breathing patterns. The control system modifies therapy delivery to coincide with exhalation phases and pause between breaths, making the therapy adaptive rather than static, thereby improving comfort while maintaining clearance effectiveness
Solution Approach 2:
The system incorporates sensors (accelerometers, gyroscopes, magnetometers) that continuously monitor chest wall motion and breathing patterns. This feedback loop allows the control system to detect inhalation/exhalation phases and adjust oscillation parameters accordingly, ensuring force is applied optimally during exhalation when airways are naturally open, thus improving both comfort and efficiency
2Productivity
If impact force is applied consistently throughout the breathing cycle, then airway clearance may be maximized, but patient comfort and tolerance deteriorate
Solution Approach 1:
The system applies oscillation force periodically synchronized with the patient's breathing cycle. Force is delivered during exhalation phases and paused during inhalation, creating a rhythmic pattern that aligns with natural respiratory mechanics. This periodic application improves patient tolerance while maintaining clearance effectiveness by leveraging the natural opening of airways during exhalation
Solution Approach 2:
The system proactively reduces or pauses oscillation force during inhalation phases before the patient experiences discomfort. By anticipating the inhalation phase through sensor detection, the system preemptively reduces force application, preventing discomfort rather than reacting to it, thereby improving patient tolerance while maintaining therapeutic effectiveness during exhalation
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
Enhances therapeutic effectiveness by aligning oscillation therapy with patient breathing cycles, improving comfort and efficiency in airway clearance by optimizing force application during exhalation and reducing discomfort during inhalation.
Implementation Method 1
a force generator arranged to generate successive force of impact as a therapy regime for the patient, the force generator arranged in communication with the chest engagement device to communicate force of impact from the force generator into impact force to the patient's chest
Implementation Method 2
The at least one sensor may include at least one accelerometer
Implementation Method 3
The at least one sensor may include at least one gyroscope
Implementation Method 4
The at least one sensor may include at least one magnetometer
Data Source
AI summary
Devices, systems, and methods for HFCWO oscillation therapy can enhance expectoration by preferred impact to the user to encourage mucus dislodging, including by successive pressure imposition to a chest engagement device to provide HFCWO.