Respiratory Mask Headgear Lock Release for Easy Doffing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Respiratory mask systems face challenges in maintaining an airtight seal and comfortable fit due to the need for high retention forces that can make donning and doffing difficult, and existing solutions do not efficiently address the balance between seal integrity and user convenience.
Innovation Solution
The respiratory mask system incorporates a headgear with directional locks and a disengagement mechanism that reduces the force required to move the straps, allowing for easy adjustment and release, combined with a yoke and frame design that facilitates secure attachment and intuitive disengagement for improved user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high retention forces are used in headgear to maintain airtight seal, then seal integrity is improved, but donning and doffing difficulty increases
Solution Approach 1:
The headgear incorporates a dynamic locking mechanism that transitions between locked and unlocked states. The lockable adjustment mechanism includes a lockable component that can engage with a strap to prevent movement (maintaining seal integrity) or disengage to allow movement (facilitating donning/doffing). This dynamic state change resolves the contradiction between high retention force and ease of operation.
Solution Approach 2:
The mechanism changes the retention force parameter dynamically. When locked, the retention force is high to maintain seal integrity. When unlocked, the retention force is reduced or eliminated to allow easy donning and doffing. The lockable adjustment mechanism controls this parameter change through engagement and disengagement of locking components.
2Stability of the object's composition
If directional locks are used to maintain stable position, then seal stability is improved, but adjustment flexibility is reduced
Solution Approach 1:
The directional lock mechanism is made dynamic through the lockable adjustment mechanism. The lock can engage to provide directional locking (preventing unwanted movement and maintaining stability) or disengage to allow free adjustment (providing adaptability). This resolves the contradiction between stability and flexibility by making the locking function controllable.
Solution Approach 2:
The mechanism allows the user to self-control the locking state based on needs. The lockable component can be engaged or disengaged by the user during adjustment or use, enabling the system to serve both stability and flexibility requirements through user-initiated state changes.
3Ease of operation
If automatic disengagement mechanism is added, then doffing ease is improved, but device complexity increases
Solution Approach 1:
The automatic disengagement mechanism uses self-service principles where the mask weight or user action automatically triggers the disengagement of the lockable component. The mechanism responds to natural user movements or gravitational force, eliminating the need for complex manual release systems while improving doffing ease.
Solution Approach 2:
The lockable adjustment mechanism acts as an intermediary between the user's simple action (pulling or releasing) and the complex function of disengaging directional locks. This intermediary component translates simple user input into the coordinated action of releasing multiple locking points, reducing overall system complexity while improving ease of operation.
Data Source
AI summary
A respiratory mask system is provided comprising a respiratory mask and a head engaging portion, wherein the head engaging portion is configured to couple to the respiratory mask to engage a wearer's head via a disengageable mechanism. The disengageable mechanism may comprise a linking member attached to the head engaging portion, a disengagement member attached to the respiratory mask and configured to receive the linking member, wherein the disengagement member is configured to be moveable between a first position and a second position, a control configured to allow a wearer of the mask to move the disengagement member towards the first position and one or more surfaces defined by the disengagement member and configured to exert a frictional force on the linking member.