Respiratory Headgear Assembly With Self-Locking Adaptive Fit
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Solution Overview
Problem
Existing respiratory therapy headgear systems are prone to tangling, require complex adjustments, and can apply uncomfortable pinching forces due to their elastic nature, making them difficult to use and uncomfortable for users.
Innovation Solution
A headgear system with a plastic core and textile casing, designed to automatically adjust to the user's head size and transform from elastic to inelastic properties, featuring integrated length adjusting arrangements and restriction mechanisms to maintain a stable fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If headgear is made from compliant elastic material, then it can stretch to fit different head sizes, but it becomes prone to tangling and lacks structure when not being worn
Solution Approach 1:
The headgear is divided into multiple independent straps rather than a single continuous elastic band. Each strap can be independently adjusted and positioned, preventing tangling while maintaining the ability to fit different head sizes through individual strap adjustment.
Solution Approach 2:
The headgear transitions from a fully elastic state during donning to a locked, fixed-length state during use. Adjustment mechanisms allow the elastic material to be set at specific lengths, changing the parameter from variable elasticity to fixed dimensional stability.
2Adaptability or versatility
If headgear uses adjustment loops with hook-and-loop fasteners, then it permits size adjustment, but it requires considerable user interaction and is prone to misuse or mis-adjustment
Solution Approach 1:
The headgear incorporates self-adjusting mechanisms that automatically adapt to the user's head size without requiring manual manipulation of complex fasteners. The system self-regulates the strap tension and positioning, eliminating the need for user interaction with hook-and-loop fasteners.
Solution Approach 2:
The patent replaces manual hook-and-loop adjustment mechanisms with automated adjustment systems that use mechanical advantage or elastic memory to automatically set the correct strap length and tension, substituting complex user-operated mechanical systems with simpler self-regulating mechanisms.
3Adaptability or versatility
If headgear is configured to have elasticity, then it can accommodate head size variation, but it stretches and applies pinching forces to the user's head
Solution Approach 1:
Different portions of the headgear have different elastic properties. The straps have localized elasticity only where needed for adjustment, while the portions contacting the user's head are made from non-elastic, comfortable materials that do not apply pinching forces.
Solution Approach 2:
The headgear uses composite construction combining elastic materials for the adjustment mechanism with non-elastic, soft materials for the user-contacting portions. This composite structure provides both size adaptability and comfort by preventing pinching forces at the interface with the user's head.
Data Source
AI summary
A headgear system and/or an interface assembly incorporating a headgear system that, in some configurations, is configured to transform from elasticated or “stretchy” behavior to “inelastic” behavior at least in response to normal or expected forces encountered during the intended therapy. In some configurations, upon fitment to the head of a user, the system automatically adjusts toward or to an appropriate size. A headgear portion or assembly for use in combination with a breathing apparatus in some configurations is at least substantially inelastic and is three dimensional in shape. The headgear portion or assembly can comprise a plastic core and a textile casing. The headgear, or part thereof, may also have integrally moulded labels, connectors, adjustment mechanisms and/or grips.