Patient interface device including a dynamic self adjustment mechanism
US9700694B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Aug 4, 2011 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | May 12, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/0666
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A patient interface device (8, 8′) for delivering a flow of breathing gas to an airway of a patient includes a grooved adjustment mechanism (20, 58, 78) having a main body (22, 60) formed from an elastic material, the main body having an outer surface having a plurality of convolutions (80) provided therein. Each convolution including a groove (24, 62, 84), and each convolution has a stiffness associated therewith. The stiffnesses associated with the convolutions increase from a first side of the main body to a second side of the main body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.