Patent ID: 9446214
Filing Date: 2016-09-20
CPC Classification: A61M

Claim Text:
1. A patient interface device, comprising: a patient sealing assembly adapted to communicate a flow of breathing gas with an airway of a patient; a coupling portion fixed to the patient sealing assembly; a forehead support pivotably coupled to the patient sealing assembly, the forehead support pivotable among a plurality of positions with respect to the patient sealing assembly; and an adjustment mechanism adapted to move the forehead support among the plurality of positions and fix the forehead support in a desired position among the plurality of positions, wherein the adjustment mechanism comprises: a wedge member movable among a plurality of positions with respect to the patient sealing assembly, the wedge member having a first side slidably engaged with the coupling portion and another side, different from the first side, slidably engaged to a portion of the forehead support, wherein the wedge member is disposed between the forehead support and the coupling portion, and wherein the wedge member engages the forehead support causing the forehead support to move among the plurality of positions; and a threaded member rotatable about a central axis, wherein the wedge member comprises a threaded aperture cooperatively engaged with the threaded member, and wherein rotation of the threaded member about the central axis causes the wedge member to translate along the central axis.