Adjustable Forehead Pad Frame for Stable Ventilation Mask Fit
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Solution Overview
Problem
Existing mask assemblies for non-invasive positive pressure ventilation cause discomfort due to strong compression pressure applied to the same area of the face for extended periods, as they lack effective adjustment mechanisms for positioning and angle of the mask components.
Innovation Solution
A mask outer frame unit with a forehead contact portion featuring an adjustment portion that allows for removable attachment and adjustment of the pad's angle and position relative to the forehead, using engagement protrusions and through holes for secure attachment and easy repositioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the mask is firmly fixed to the patient's face using strong compression pressure, then the mask stability is improved, but the patient's comfort deteriorates due to discomfort from prolonged pressure on the same area
Solution Approach 1:
The pad is designed to be adjustable in position and angle through the adjustment portion, allowing dynamic repositioning during use. This enables the compression pressure to be redistributed to different areas of the forehead, maintaining mask stability while reducing patient discomfort from prolonged static pressure on the same spot.
Solution Approach 2:
The adjustment portion allows changing the position and angle parameters of the pad relative to the mask. By modifying these parameters, the contact points and pressure distribution on the patient's forehead can be optimized, resolving the contradiction between maintaining firm fixation and preventing discomfort.
2Manufacturing precision
If the pad position and angle are adjusted by changing the entire mask position, then the pad positioning is improved, but the operational complexity increases and mask repositioning becomes difficult
Solution Approach 1:
The adjustment function is segmented from the mask body into a separate adjustment portion with engagement protrusions and through holes. This allows the pad to be independently positioned and angled without moving the entire mask, enabling precise pad positioning while maintaining ease of operation through simple attachment/detachment actions.
Solution Approach 2:
The adjustment portion acts as an intermediary mechanism between the pad and the mask. It provides engagement protrusions that fit into through holes, serving as a mediator that enables precise positioning of the pad relative to the mask without requiring movement of the mask itself, thus simplifying the adjustment operation.
Data Source
AI summary
A mask outer frame unit includes a mask outer frame which can be mounted on a mask attached to a face of a patient, and a pad that can abut against the face of the patient. The mask outer frame includes a forehead contact portion which is disposed so as to make the pad abut against a forehead of the patient. An adjustment portion to which the pad can be attached removably, and which can adjust at least one of an angle of the pad with respect to the forehead contact portion and a position of the pad with respect to the forehead contact portion is provided in the forehead contact portion.