Respiratory Mask Exhaust Passage for Quiet Diffused Venting

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Solution Overview

Problem

Existing respiratory masks used in non-invasive ventilation therapy produce loud exhaust noise and direct airflow towards the bed partner, affecting both the patient and their partner's sleep quality due to large exhaust holes and spatial limitations.

Innovation Solution

A respiratory mask design featuring an exhaust passage between the connector and frame, or between the cup and frame, that diverges and disperses exhaust gas all around the elbow, reducing noise and preventing airflow from being blown to the bed partner.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If large exhaust holes are used in the elbow or frame, then the volume of exhaust gas is ensured, but the exhaust noise becomes louder and the discharged gas affects the bed partner

Engineering Contradiction:

Improvevolume of exhaust gasVSAvoidexhaust noise and airflow direction

Core Design Contradiction:

Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The exhaust hole is divided into multiple small holes (first exhaust holes and second exhaust holes) distributed across different surfaces of the elbow. This segmentation allows the exhaust gas volume to be maintained while reducing the noise level of each individual hole and dispersing the airflow direction away from the bed partner.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different surfaces of the elbow are equipped with exhaust holes having different orientations. The first exhaust holes on the first surface discharge airflow in a first direction, while the second exhaust holes on the second surface discharge airflow in a second direction, ensuring that local airflow characteristics are optimized to prevent direct blowing toward the bed partner.

Inventive Principle:

Principle #3Local quality

2Object-affected harmful factors

If small holes are used for discharging gas, then the exhaust noise is reduced, but the production cost increases due to molding difficulties and the airflow direction still affects the bed partner

Engineering Contradiction:

Improveexhaust noiseVSAvoidproduction cost and manufacturing complexity

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The exhaust system uses multiple small holes instead of a single large hole, which are easier to mold and produce. The segmentation into first and second exhaust holes on different surfaces also simplifies the manufacturing process while maintaining ease of production and reducing costs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The exhaust holes are asymmetrically distributed on different surfaces of the elbow with different orientations. This asymmetric arrangement ensures that the airflow is discharged in multiple directions away from the bed partner, solving the directional problem while maintaining simple manufacturing.

Inventive Principle:

Principle #4Asymmetry

3Ease of manufacture

If small holes are centralized in clusters, then the exhaust holes are easier to produce, but the airflow direction still blows to the bed partner due to spatial limitations

Engineering Contradiction:

Improveease of producing exhaust holesVSAvoidairflow direction toward bed partner

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The exhaust holes are segmented into two distinct groups: first exhaust holes on the first surface and second exhaust holes on the second surface. This spatial segmentation ensures that the holes are distributed rather than centralized, making them easier to produce while directing airflow away from the bed partner through different orientations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The exhaust system utilizes multiple dimensions by placing exhaust holes on different surfaces (first surface and second surface) of the elbow with different orientations. This dimensional distribution ensures that airflow is discharged in multiple directions, preventing direct blowing toward the bed partner while maintaining ease of production.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 design effectively reduces exhaust noise and ensures airflow is not directed towards the bed partner, improving sleep quality for both the patient and their partner.

Implementation Method 1

the exhaust passage is arranged to be able to guide a respiratory exhaust gas to be diverged and discharged all around the elbow

Methodology Applied

Scientific EffectFluid flow divergence:

Data Source

PatentUS12508383B2Respiratory mask and ventilation therapy device

Publication Date: 2025.12.30 TIANJIN JUEMING TECH CO LTD

AI summary

The present disclosure relates to the field of ventilation therapy apparatus, and discloses a respiratory mask and a ventilation therapy apparatus. The respiratory mask includes a cushion assembly, an elbow assembly, and a connecting assembly arranged between the cushion assembly and the elbow assembly. The cushion assembly includes a cup, the connecting assembly includes a frame and a connector, the elbow assembly includes an elbow, an exhaust passage is formed between the connector and the frame and/or between the cup and the frame, and the exhaust passage is arranged to be able to guide a respiratory exhaust gas to be diverged and discharged all around the elbow.