Respiratory Nebulizer Assembly With Filter Verification and Flow Sensing
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Solution Overview
Problem
Existing respiratory devices that apply oscillating pressures to airways are bulky, costly, and heavy due to additional structural elements like valves, diaphragm pumps, and piezoelectric devices, which increase their size and weight.
Innovation Solution
Incorporation of a magnetic proximity switch, rotatable arm, control circuitry, and laminar flow structure to verify filter attachment, monitor airflow, and measure pressure drop, along with a nebulizer assembly for efficient airflow management and medication delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional structural elements (valves, diaphragm pumps, acoustic devices, piezoelectric devices) are incorporated to produce oscillations in baseline pressure levels, then oscillatory pressure delivery capability is improved, but device size, weight, and cost increase
Solution Approach 1:
The patent replaces complex mechanical oscillation-generating components (diaphragm pumps, acoustic devices, piezoelectric devices) with a magnetic proximity switch-based detection system. Instead of mechanically producing oscillations, the system uses a magnetic field sensor to detect and respond to pressure changes, thereby eliminating bulky mechanical structures while maintaining oscillatory pressure delivery capability through electronic control.
Solution Approach 2:
The magnetic proximity switch acts as an intermediary between the pressure system and the control system. Rather than directly using complex mechanical oscillators, the magnetic switch detects pressure variations and translates them into electrical signals that control the pressure delivery, simplifying the overall system architecture and reducing device size.
2Reliability
If magnetic proximity switch and filter verification system are added to ensure proper filter attachment, then reliability is improved, but device complexity increases
Solution Approach 1:
The system performs self-verification of filter attachment through the magnetic proximity switch that automatically detects whether the filter is properly installed. The control system monitors the magnetic field signal and provides feedback without requiring manual verification or additional complex sensing mechanisms, thereby improving reliability while minimizing added complexity.
Solution Approach 2:
The magnetic proximity switch provides continuous feedback on filter attachment status to the control system. This feedback mechanism ensures reliable filter installation through automatic detection and monitoring, allowing the system to adjust operation based on filter status without requiring additional complex verification components.
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
The solution reduces device size, cost, and weight while ensuring effective filter attachment verification, airflow monitoring, and efficient airflow management, thereby enhancing user convenience and therapy efficacy.
Implementation Method 1
A magnetic proximity switch is positioned within the housing adjacent to the hose port
Data Source
AI summary
A nebulizer assembly for a respiratory device is provided having a housing defining a chamber. The housing also has a nebulizer port configured to receive a nebulizer to discharge atomized medication into the chamber. An outlet of a handle is coupled to the inlet of the housing. A hose is coupled to an inlet of the handle. A patient interface is coupled to the outlet of the housing. Air flows from the hose to the patient interface via the handle and the housing. The air mixes with the atomized medication within the chamber.