Inextensible headgear and CPAP or ventilator mask assembly with the same
First Claim
Patent Images
1. A mask for use with a CPAP device, comprising:
- a frame; and
a cushion provided to the frame, the cushion, in cross section, having a generally U-shaped configuration defining a face contacting surface, an inner leg of the U-shaped configuration being proximal to the frame and an outer leg defining a distal end spaced away from the frame, the inner leg defining an opening in the cushion, the opening being adapted to receive pressurized gas from the CPAP device, wherein the U-shaped configuration includes a connecting portion between the inner leg and the outer leg that provides said face contacting surface, and the inner leg extends in a continuous, uninterrupted and smooth manner in a direction of flow of the pressurized gas through the opening.
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Accused Products
Abstract
A headgear (200) for a respiratory mask (202) of a ventilator or CPAP device is provided. The headgear includes a strap portion (204, 206) formed of a substantially inextensible material. The strap portion has formed on one end thereof a connecting structure configured to connect to a mask of the ventilator or CPAP device. One advantage is that the mask will not or at least will be less inclined to lift off the face as mask pressure is increased.
175 Citations
28 Claims
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1. A mask for use with a CPAP device, comprising:
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a frame; and a cushion provided to the frame, the cushion, in cross section, having a generally U-shaped configuration defining a face contacting surface, an inner leg of the U-shaped configuration being proximal to the frame and an outer leg defining a distal end spaced away from the frame, the inner leg defining an opening in the cushion, the opening being adapted to receive pressurized gas from the CPAP device, wherein the U-shaped configuration includes a connecting portion between the inner leg and the outer leg that provides said face contacting surface, and the inner leg extends in a continuous, uninterrupted and smooth manner in a direction of flow of the pressurized gas through the opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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- 15. A mask for use with a CPAP device, comprising a cushion having a generally U-shaped cross-sectional configuration, the cushion including an inner leg, an outer leg, and a face contacting surface formed between the inner leg and the outer leg, the inner leg defining an opening in the cushion, the opening adapted to receive pressurized gas from the CPAP device, wherein the inner leg extends in a continuous, uninterrupted and smooth manner in a direction of flow of the pressurized gas through the opening.
Specification