Valsalva mask
AssigneeFisher & Paykel Healthcare Limited
InventorsMatthew Roger Stephenson, Melissa Catherine Bornholdt
Life of this patent
Estimating the term…
Abstract
An interface for positive pressure therapy includes a mask assembly and a headgear assembly. The mask assembly comprises a mask seal that is adapted to underlie the nose. The mask seal extends up the lateral sides of the nose. The mask seal has a primary seal below the nose and a secondary seal alongside the nose.
Claims5
A mask assembly comprising a mask seal, a mask base, and a mask seal adjustment mechanism coupled to the mask base, the mask seal adjustment mechanism configured to adjust a lateral distance between opposite walls of the mask seal by providing and controlling a lateral force to compress the mask seal primarily in a lateral direction across a width of the mask assembly, the mask seal adjustment mechanism comprising a swing arm, and the lateral force to compress the mask seal primarily in the lateral direction being controlled by the swing arm, wherein the swing arm is configured to compress a lateral periphery of the mask seal by pivoting around an axis extending in the lateral direction of the mask.
A mask assembly comprising a mask seal, a mask base, and a mask seal adjustment mechanism coupled to the mask base, the mask seal adjustment mechanism configured to adjust a lateral distance between opposite walls of the mask seal by providing and controlling a lateral force to compress the mask seal primarily in a lateral direction across a width of the mask assembly, the mask seal adjustment mechanism comprising a swing arm, and the lateral force to compress the mask seal primarily in the lateral direction being controlled by the swing arm, wherein the mask seal adjustment mechanism is pivotably coupled to the mask base, the swing arm comprising a lift bar and first and second ends, wherein lifting the lift bar causes lowering of the first and second ends to compress opposite walls of the mask seal and to decrease a distance between the opposite walls of the mask seal, and the swing arm further comprising first and second pads attached to the first and second ends, respectively, the first and second pads being configured to contact and squeeze the opposite walls of the mask seal when the lift bar is raised, wherein the swing arm is configured to compress a lateral periphery of the mask seal.
A mask assembly comprising a mask seal, a mask base, and a mask seal adjustment mechanism coupled to the mask base, the mask seal adjustment mechanism configured to adjust a lateral distance between opposite walls of the mask seal by providing and controlling a lateral force to compress the mask seal primarily in a lateral direction across a width of the mask assembly, the mask seal adjustment mechanism comprising a swing arm, and the lateral force to compress the mask seal primarily in the lateral direction being controlled by the swing arm;
- wherein the mask seal adjustment mechanism is pivotably coupled to the mask base and comprises a swing arm, the swing arm comprising a lift bar and first and second ends, wherein lifting the lift bar causes lowering of the first and second ends to compress opposite walls of the mask seal and to decrease a distance between the opposite walls of the mask seal, and the swing arm further comprising first and second pads attached to the first and second ends, respectively, the first and second pads being configured to contact and squeeze the opposite walls of the mask seal when the lift bar is raised, and wherein the mask seal adjustment mechanism further comprises a dial and a cog configured to retain the lift bar in a desired position with respect to the mask base.
Dependencies are inferred from the claim text.