Self-Adjusting Anchor Points for Patient Interface Stability
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Solution Overview
Problem
Conventional patient interface devices face challenges in balancing comfort and stability due to dislodgment issues when patients change positions, exacerbated by varying facial geometries, which conventional headgear struggles to accommodate effectively.
Innovation Solution
A patient interface assembly with a self-adjusting anchor point anterior to the ear, utilizing a strap apparatus and movable connectors on the headgear, allows for flexible and adjustable tension distribution to maintain a secure seal without discomfort, accommodating different facial structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If increased strapping force is applied to stabilize a dislodged mask, then device stability is improved, but patient comfort deteriorates
Solution Approach 1:
The headgear incorporates movable connectors that allow the strap apparatus to dynamically adjust its anchor points and tension distribution. This enables the system to adapt to patient movement and facial geometry changes without requiring excessive strapping force, thereby maintaining device stability while reducing patient discomfort.
Solution Approach 2:
The self-adjusting anchor points automatically reposition and redistribute tension in response to mask dislodgment or patient movement. This self-regulating mechanism maintains optimal sealing force without requiring manual intervention or excessive initial strapping, thus preventing both dislodgment and discomfort.
2Adaptability or versatility
If conventional headgear is used to accommodate varying facial geometries, then device versatility is limited, but manufacturing simplicity is maintained
Solution Approach 1:
The headgear is divided into modular components including separate strap apparatus and movable connectors that can independently adjust to different facial geometries. This segmentation allows each component to optimize its position and tension, enhancing versatility without requiring complete redesign of the entire headgear system.
Solution Approach 2:
The movable connectors serve multiple functions: they act as adjustment mechanisms for different facial geometries, provide self-adjusting anchor points for stability, and distribute tension evenly across various patient types. This multi-functionality increases adaptability without proportionally increasing device complexity.
3Device complexity
If fixed anchor points are used in headgear, then device complexity is reduced, but adaptability to positional changes deteriorates
Solution Approach 1:
The connectors are designed to be movable rather than fixed, allowing them to dynamically reposition along the headgear structure in response to patient movement and gravitational forces. This dynamic capability enables the system to maintain optimal anchor points throughout the night without complex active control mechanisms.
Data Source
AI summary
A patient interface assembly having an improved support for use in securing a patient interface device to the head of a patient overcomes the shortcomings of conventional headgear. The improved support provides a self-adjusting anchor point situated anterior to the ear of the patient that provides enhanced stability in mounting the patient interface device to the patient.