Respiratory therapy systems and methods using a gas mixing circuit
US9662468B2 · kind B2 · utility
0Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2012 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Sep 26, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2206/14
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and methods for mixing at least two gases for delivery to the airway of a subject use a gas mixing circuit having a diffusion portion. The diffusion portion may be configured to elongate the shape of the cross-section of the path through the gas mixing circuit in a particular direction and/or orientation. As a result, the gas concentration profile of the gas mixture after the gas mixing circuit is more uniform than the gas concentration profile after the merging of multiple gases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.