Respiratory Pressure Therapy Airflow Layout for Noise Reduction
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Solution Overview
Problem
Existing respiratory therapies, such as CPAP and NIV, face challenges with patient compliance due to discomfort, difficulty of use, aesthetics, and inefficiencies in mask design, noise, and inadequate data management, which impact the effectiveness and comfort of treatment for respiratory disorders.
Innovation Solution
The development of a Respiratory Pressure Therapy (RPT) device with improved noise reduction, compact size, and user-friendly design, incorporating multiple inlet and flow tubes arranged in arrays, along with a U-shaped air flow path and separate chambers to minimize noise and enhance comfort, coupled with a portable and easy-to-use humidifier system for air delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional RPT devices are used, then ventilatory support can be provided to patients, but the devices produce excessive noise that disturbs patients during sleep
Solution Approach 1:
The patent extracts the noise-generating components (blower motor and air intake system) from the main device housing into a separate enclosed module. This spatial separation isolates the harmful noise source from the patient interface, reducing noise exposure while maintaining the core ventilatory support function that ensures patient compliance
Solution Approach 2:
The patent introduces acoustic insulation materials and sound-absorbing structures as intermediary elements between the noise-generating blower and the patient environment. These intermediaries attenuate noise transmission through the device housing and air pathways, reducing harmful noise exposure while preserving the reliability of patient compliance
2Ease of operation
If RPT devices are made compact for portability, then ease of use improves, but noise reduction becomes more difficult to achieve
Solution Approach 1:
The patent employs a nested modular architecture where the noise-isolated blower module is integrated within the compact device housing. The acoustic insulation layers are nested within the housing walls, and the air filtration system is nested within the air pathway. This nesting approach achieves noise reduction without increasing the overall device footprint, maintaining portability while reducing harmful noise factors
3Object-affected harmful factors
If multiple inlet and flow tubes are used to reduce noise, then noise output decreases, but device complexity increases
Solution Approach 1:
The patent merges multiple air intake pathways into a single integrated inlet manifold that distributes air to multiple flow tubes. This consolidation reduces the number of separate inlet components and simplifies the overall tube array configuration while maintaining the noise reduction benefits of multiple flow paths. The merged design reduces device complexity while preserving the harmful factor reduction
Data Source
AI summary
Apparatus for generating a supply of air at positive pressure for the amelioration or treatment of a respiratory disorder includes a first chamber, a second chamber, at least one inlet tube structured and configured to allow ambient air to enter the first chamber, at least one flow tube structured and configured to allow air to pass from the first chamber to the second chamber, and a blower structured and configured to produce a flow of air at positive pressure. The blower is positioned in the first chamber and structured and configured to receive air from the second chamber. The blower includes a housing structured and configured to sealingly separate air flow through an interior of the housing from the first chamber. The at least one inlet tube is axially spaced from the at least one flow tube.