CPAP Headgear Strap Positioning to Prevent Strap Drop and Tangles

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Solution Overview

Problem

Existing headgear straps for CPAP systems often fall behind the user's shoulder due to gravity, making them difficult to locate and manage, especially for those with limited mobility, and creating an entanglement risk.

Innovation Solution

The implementation of strap management arrangements that securely position the free ends of lower headgear straps in predetermined locations on the user's head, such as forward of the ear or beneath the ear, using magnetic, Velcro, snap, or adhesive coupling elements to maintain accessibility and prevent entanglement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If headgear straps are made long enough to reach from the rear member to the patient interface, then the straps can effectively secure the mask, but the straps fall behind the user's shoulder due to gravity making them difficult to locate and manage

Engineering Contradiction:
Improveease of strap managementVSAvoidtime to locate and reattach straps
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent applies preliminary action by providing coupling elements that automatically locate and hold the free ends of lower straps in predetermined positions on the head (such as near the ears or temples) before the user needs to reattach them. This prevents the straps from falling behind the shoulders and makes them readily accessible for quick reattachment.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If lower strap members are made flexible and removable for ease of attachment, then users can easily put on and remove the headgear, but the free ends become unmanageable and prone to entanglement

Engineering Contradiction:
Improveease of attachmentVSAvoidstrap entanglement prevention
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The coupling elements are positioned to automatically guide and hold the free ends of flexible lower strap members in predetermined locations on the head, preventing them from becoming unmanageable or entangled while maintaining the flexibility needed for easy attachment and removal.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If coupling elements are added to manage strap positions, then strap accessibility is improved, but the device complexity increases

Engineering Contradiction:
Improvestrap accessibilityVSAvoidheadgear structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent merges the coupling elements with existing headgear components such as upper straps, tubular portions, or the rear member itself, rather than adding completely separate structures. This integration approach provides strap management functionality while minimizing increases in overall device complexity.

Inventive Principle:
Principle #5Merging (Combining)

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

Enhances usability by reducing the time and frustration in reattaching straps, improving accessibility, and preventing entanglement, especially for users with limited mobility.

Implementation Method 1

using magnetic, Velcro, snap, or adhesive coupling elements to maintain accessibility

Methodology Applied
Scientific EffectMagnetism: Magnetism

Implementation Method 2

using magnetic, Velcro, snap, or adhesive coupling elements to maintain accessibility

Methodology Applied
Scientific EffectVelcro: Velcro

Data Source

PatentUS12594394B2Arrangements for headgear strap management
Publication Date: 2026.04.07 KONINKLIJKE PHILIPS NV
  • US12594394B2 patent drawing
  • US12594394B2 patent drawing
  • US12594394B2 patent drawing

AI summary

A headgear for securing a patient interface to a patient's head includes a rear member and a pair of lower strap members. Each lower strap member is sized and configured to be positioned on a respective side of the head of the patient when the headgear arrangement is disposed on the head of the patient. Each lower strap member includes a free end that is selectively directly coupleable to the patient interface. The arrangement also includes a pair of strap management arrangements, with each arrangement positioned on a respective side of the headgear and structured to locate/hold the free end of a lower strap member of the pair of lower strap members in a predetermined location on the respective side of the head of the patient when the headgear is positioned on the head of the patient and the free end is not directly coupled to the patient interface.