Removable Gas Sensor Holder for Ventilator Housing Maintenance

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Solution Overview

Problem

Existing ventilators face challenges in easily removable oxygen calibration modules for maintenance, cleaning, or repair without disassembling the housing.

Innovation Solution

A holder with a base body and receptacles for gas sensors and coupling devices, allowing easy assembly and disassembly, airtight connections, and secure fastening to the ventilator housing, enabling efficient gas concentration detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the oxygen calibration module is integrated into the ventilator housing, then the gas sensor can be securely mounted and protected, but the module becomes difficult to remove for maintenance, cleaning, or repair without disassembling the housing

Engineering Contradiction:
Improvesecure mounting of gas sensorVSAvoidremovability of calibration module
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The holder is designed as a separate, removable component that can be detached from the ventilator housing without disassembling the housing itself. This segmentation allows the gas sensor assembly to be easily removed for maintenance while maintaining secure mounting during operation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The holder acts as an intermediary component between the gas sensor and the ventilator housing. It provides a secure mounting interface for the gas sensor while enabling easy removal through a simple detachment mechanism, eliminating the need to disassemble the housing for maintenance purposes.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stability of the object's composition

If the holder provides secure fastening of the gas sensor, then the gas sensor remains stable during operation, but the assembly and disassembly process becomes more complex

Engineering Contradiction:
Improvestability of gas sensor mountingVSAvoidcomplexity of assembly and disassembly
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The fastening mechanism is extracted from the housing structure and integrated into the removable holder component. This allows the holder to provide secure fastening through dedicated fastening elements while enabling simple detachment as a single action, reducing the overall complexity of assembly and disassembly operations.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If the holder ensures airtight connection between components, then gas concentration detection is accurate, but the connection mechanism becomes more complex

Engineering Contradiction:
Improveaccuracy of gas concentration detectionVSAvoidcomplexity of connection mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The airtight connection function is merged into the holder's basic structure through integrated sealing elements. The sealing mechanism is combined with the fastening and positioning functions in a single integrated component, achieving reliable gas-tight connections without adding separate complex sealing mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4628134A1Holder for fixing a gas sensor to and/or in a housing of a ventilator
Publication Date: 2025.10.08 LOWENSTEIN MEDICAL TECH SA
  • EP4628134A1 patent drawingFigure 1
  • EP4628134A1 patent drawingFigure 2~4
  • EP4628134A1 patent drawingFigure 5~6

AI summary

A holder (25) for fastening a gas sensor (9) to and/or in a housing (19) of a ventilator (1) comprises: a base body (27) with a fastening section (29) for fastening the base body (27) to and/or in the housing (19), a gas inlet (31), a gas outlet (33), a first receptacle (35) for receiving a coupling device (11) such that an outlet opening (17) of the coupling device (11) is fluidically coupled to the gas inlet (31), and a second receptacle (37) for receiving the gas sensor (9), wherein the base body (27) is designed to delimit a breathing gas chamber (39) together with the gas sensor (9) received by the second receptacle (37), wherein the breathing gas chamber (39) is connected on the one hand to the gas inlet (31) and on the other hand to the gas outlet (33).so that - when the coupling device (11) is received by the first receptacle (35) - breathing gas can flow from the outlet opening (17) via the gas inlet (31) into the breathing gas chamber (39) and from the breathing gas chamber (39) via the gas outlet (33) into an environment of the base body (27).