Medical Ventilator Internal Casing with Integrated Gas Circuit
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Solution Overview
Problem
Conventional respiratory assistance apparatuses, such as medical ventilators, are often bulky due to complex internal gas circuits required for cooling and ventilation, which hinders their compactness and pneumatic performance, especially in emergency applications.
Innovation Solution
A respiratory assistance apparatus with a rigid internal casing comprising two half-casings connected leaktightly, featuring an air inlet compartment, a gas outlet compartment, an oxygen circuit, and a venting circuit, along with a motorized micro-blower and control means to manage the airflow and oxygen supply efficiently, while maintaining compactness and ensuring patient safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If complex internal gas circuits are used for cooling and ventilation, then cooling efficiency and ventilation performance are improved, but the overall size and device complexity increase
Solution Approach 1:
The patent combines the cooling circuit and ventilation circuit into a single integrated gas circuit system. The gas circuit serves dual purposes: cooling the micro-blower by passing gas through the motor compartment and delivering ventilated gas to the patient through the same circuit pathway, thereby reducing the number of separate components and overall device size while maintaining both cooling and ventilation functions
Solution Approach 2:
The gas circuit is designed to perform multiple functions simultaneously: it cools the micro-blower motor, provides ventilated gas to the patient, and manages pressure differentials. This multi-functional design eliminates the need for separate dedicated cooling and ventilation circuits, reducing device complexity and size while preserving all necessary functions
2Productivity
If complex internal gas circuits are used for cooling and ventilation, then ventilation performance is improved, but device complexity increases
Solution Approach 1:
The patent merges the cooling and ventilation gas circuits into a single integrated system with unified flow paths, valves, and control mechanisms. This consolidation maintains effective ventilation performance while significantly reducing the number of separate components, connections, and control elements required, thereby lowering device complexity
Solution Approach 2:
The gas circuit is designed as a multi-functional system that simultaneously achieves cooling, ventilation, and pressure management functions through a single integrated pathway rather than multiple separate circuits, reducing operational and structural complexity while maintaining ventilation performance
3Volume of stationary object
If rigid leaktight casing is used for compact design, then device compactness is improved, but manufacturing precision requirements increase
Solution Approach 1:
The rigid casing is divided into two separate half-casings that are manufactured independently and then assembled together. This segmentation allows each half-casing to be manufactured with standard tolerances using conventional manufacturing processes, avoiding the need for extremely precise single-piece manufacturing while still achieving the required compactness and leaktight seal when assembled
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 effectively reduces the overall size of the medical ventilator while ensuring efficient cooling and ventilation performance, maintaining pneumatic compatibility, and prioritizing patient safety, making it suitable for emergency use.
Implementation Method 1
a motorized micro-blower, also called a compressor or turbine, for aspirating ambient air and delivering it at a given pressure to the patients
Implementation Method 2
the air/oxygen mixture will then reheat before being sent to the volute
Data Source
AI summary
The invention relates to a respiratory assistance apparatus (10) comprising a rigid internal casing (1) comprising a motor compartment (3) within which a motorized micro-blower (2) is arranged. The casing (1) is formed from a first and a second half-casing (1a, 1b) which are rigidly connected to each other in a leaktight manner.