Respiratory mask and related portions, components or sub-assemblies
US11305084B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2019 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Aug 18, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/0225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A respiratory mask for providing positive pressure therapy and a bias-flow venting system configured to reduce discernable draft generated by exhausted air are disclosed herein. The respiratory mask has a ball jointed elbow, one or more detachable forehead pieces and a headgear with a spacer fabric region. The elbow is configured to be removable when oriented to a predetermined position. The forehead pieces are provided in one or more sizes. The spacer fabric region having two or more layers wherein the raw edges are turned to the inside of the layers. The seal having improved seal performance and accommodating a wider variety of facial geometries. The bias-flow system having a tube and exhaust holes radially aligned on a bead of the tube. The bias-flow system also having an annular component exhaust holes and a shroud having a plenum chamber around the exhaust holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.