Fisher & Paykel Healthcare Limited

Vidhi Jayeshkumar Shah

Vitaly Kapelevich

Matthew Robert Geoff Slight

David Monroy Felix

Christopher Gareth Sims

Blair Raymund Dadson Murphy

Kavyn Manikkam

This disclosure provides a directional adjustment unit for a headgear for a respiratory mask. The directional adjustment unit provides an increased resistance to extension of one or more straps of the headgear when the headgear is under tensile forces, as compared to a lower resistance to retraction of the one or more headgear straps. The directional adjustment unit comprises a movable frictional engagement member comprising an aperture, wherein the aperture is arranged to receive a filament of a strap of the headgear therethrough, wherein the frictional engagement member in a first configuration provides a disengaged or pre-activated configuration with respect to the filament, and in a second configuration provides an engaged configuration with respect to the filament. Features are provided which improve the operation of such a directional adjustment unit. These features include features to help resist bending of the filament inside the directional adjustment unit, features to vary frictional engagement between the frictional engagement member and the filament, and features to reduce sticking of the frictional engagement member in a given position.

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Auckland, New Zealand

Vidhi Jayeshkumar Shah